Dr. Christo G. Stojanoff Profile

Dr. Christo G. Stojanoff

Retired professor

SPIE Involvement:

Author

Publications (55)

Proceedings Article | 7 February 2011 Paper

A review of selected technological applications of DCG holograms

Christo Stojanoff

Proceedings Volume 7957, 79570L (2011) https://doi.org/10.1117/12.874192

KEYWORDS: Holograms, Glasses, Holography, Holographic optical elements, Coating, Modulation, Manufacturing, Diffraction, Refractive index, Positron emission tomography

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Proceedings Article | 9 June 2006 Paper

The effects of the film manufacturing techniques, of the exposure procedures and of the development and post-treatment thermochemical processes on the holographic properties of HOEs in DCG

Christo Stojanoff

Proceedings Volume 6252, 62521V (2006) https://doi.org/10.1117/12.677176

KEYWORDS: Holography, Modulation, Holographic optical elements, Holograms, Refractive index, Coating, Photography, Glasses, Manufacturing, Humidity

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Proceedings Article | 22 February 2006 Paper

Engineering applications of HOEs manufactured with enhanced performance DCG films.

Christo Stojanoff

Proceedings Volume 6136, 613601 (2006) https://doi.org/10.1117/12.642986

KEYWORDS: Holograms, Holography, Holographic optical elements, Polymers, Glasses, Reflectivity, Manufacturing, Diffusion, Diffraction, Reflection

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Proceedings Article | 29 June 2004 Paper

Effects of the film manufacturing procedure and development process on the holographic properties of HOE in DCG

Christo Stojanoff

Proceedings Volume 5290, (2004) https://doi.org/10.1117/12.526000

KEYWORDS: Holograms, Holography, Holographic optical elements, Modulation, Coating, Photography, Reflection, Manufacturing, Holographic materials, Glasses

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Proceedings Article | 11 October 1999 Paper

Bandwidth- and angle-selective holographic films for solar energy applications

Christo Stojanoff, Jochen Schulat, Michael Eich

Proceedings Volume 3789, (1999) https://doi.org/10.1117/12.367569

KEYWORDS: Holograms, Holography, Holographic optical elements, Glasses, Reflectivity, Solar energy, Buildings, Diffusion, Spatial frequencies, Manufacturing

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Proceedings Article | 23 March 1999 Paper

Use of filler material in DCG films for predictable shift of the spectral characteristics of holograms

Christo Stojanoff, Philipp Froening, Jochen Schulat

Proceedings Volume 3638, (1999) https://doi.org/10.1117/12.342820

KEYWORDS: Holograms, Holography, Holographic optical elements, Solar energy, Ultraviolet radiation, Polymers, Reflectivity, Diffusion, Holographic materials, Manufacturing

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Proceedings Article | 29 October 1998 Paper

Review of the design and manufacturing procedures for large-format holographic optical elements

Christo Stojanoff, Hartmut Schuette, Jochen Schulat, Philipp Froning

Proceedings Volume 3429, (1998) https://doi.org/10.1117/12.328538

KEYWORDS: Holograms, Holography, Modulation, Holographic optical elements, Refractive index, Glasses, Manufacturing, Optical design, Diffraction, Coating

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Proceedings Article | 25 September 1998 Paper

Comparison of the holographic properties of DCG and polymer materials containing hydroxyl and/or carboxyl functional groups

Christo Stojanoff, Philipp Froning

Proceedings Volume 3417, (1998) https://doi.org/10.1117/12.323490

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Proceedings Article | 26 March 1998 Paper

Evaluation of holographic materials from an applications point of view

Christo Stojanoff, Hartmut Schuette, Philipp Froening

Proceedings Volume 3294, (1998) https://doi.org/10.1117/12.304508

KEYWORDS: Holograms, Holography, Diffraction, Holographic optical elements, Modulation, Manufacturing, Glasses, Holographic materials, Optical design, Refractive index

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Proceedings Article | 26 March 1998 Paper

Influence of the dichromate concentration on the holographic properties of dichromated gelatin layers

Jochen Schulat, Klaus Froehlich, Christo Stojanoff

Proceedings Volume 3294, (1998) https://doi.org/10.1117/12.304514

KEYWORDS: Refractive index, Modulation, Holograms, Holography, Phase shift keying, Holographic optical elements, Water, Diffraction gratings, Diffraction, Scattering

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Proceedings Article | 25 September 1997 Paper

Fiber optical multi-channel laser radar with parallel processing

Christian Baetzel, Johannes Schaller, Christo Stojanoff

Proceedings Volume 3100, (1997) https://doi.org/10.1117/12.287764

KEYWORDS: LIDAR, Distance measurement, Modulation, Sensors, Fiber optics, Laser systems engineering, Optical fibers, Estimation theory, Time metrology, Parallel processing

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Proceedings Article | 17 September 1997 Paper

Plasmon spectroscopy for high-resolution angular measurements

Johannes Schaller, Ralf Czepluch, Christo Stojanoff

Proceedings Volume 3098, (1997) https://doi.org/10.1117/12.281194

KEYWORDS: Reflection, Super resolution, Microscopes, Silver, Near field optics, Refraction, Prisms, Thermography, Plasmons, Dielectrics

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Proceedings Article | 15 May 1997 Paper

Fabrication of large-format holograms in dichromated gelatin films for sun control and solar concentrators

Christo Stojanoff, Hartmut Schuette, Jochen Schulat, Ralf Kubiza, Philipp Froening

Proceedings Volume 3010, (1997) https://doi.org/10.1117/12.274414

KEYWORDS: Holograms, Holography, Holographic optical elements, Diffraction, Glasses, Modulation, Refractive index, Solar concentrators, Sun, Control systems

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Proceedings Article | 10 April 1997 Paper

Effects of process control and exposure energy upon the inner structure and the optical properties of volume holograms in dichromated gelatin films

Hartmut Schuette, Christo Stojanoff

Proceedings Volume 3011, (1997) https://doi.org/10.1117/12.271361

KEYWORDS: Holograms, Refractive index, Reflection, Modulation, Optical simulations, Diffraction, Optical properties, Holographic optical elements, Solar energy, Process control

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Proceedings Article | 10 April 1997 Paper

Review of the technology for the manufacturing of large-format DCG holograms for technical applications

Christo Stojanoff

Proceedings Volume 3011, (1997) https://doi.org/10.1117/12.271375

KEYWORDS: Holograms, Holography, Glasses, Diffraction, Modulation, Holographic optical elements, Holographic concentrators, Solar concentrators, Manufacturing, Refractive index

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Proceedings Article | 20 December 1996 Paper

Fabrication of high-efficiency reflection holograms for use as a holographic concentrator in the blue spectral domain around 420 nm

Philipp Froening, Jochen Schulat, Christo Stojanoff

Proceedings Volume 2951, (1996) https://doi.org/10.1117/12.262410

KEYWORDS: Holograms, Mirrors, Holography, Reflectivity, Diffraction, Holographic concentrators, Reflection, Polymers, Glasses, Chemistry

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Proceedings Article | 20 December 1996 Paper

New method for recording large-size holograms of the reflective type with adjustable spectral characteristics in DCG

Ernst Wagemann, Philipp Froening, Christo Stojanoff

Proceedings Volume 2951, (1996) https://doi.org/10.1117/12.262411

KEYWORDS: Holograms, Holography, Reflectivity, Prisms, Photovoltaics, Solar concentrators, Near infrared, Chemistry, Diffraction, Mirrors

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Proceedings Article | 18 September 1996 Paper

Fast optical distance measurement by analysis of the focus of a holographic lens

Johannes Schaller, Ernst Wagemann, Christo Stojanoff

Proceedings Volume 2782, (1996) https://doi.org/10.1117/12.250745

KEYWORDS: Holography, Distance measurement, Sensors, Electro optical systems, Electro-optic testing, Electro optics, Control systems, Silicon, Signal detection, Monochromatic aberrations

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Proceedings Article | 19 July 1996 Paper

Fault detection and classification in and on transparent films by light scattering

Christo Stojanoff, Andreas Ante, Johannes Schaller

Proceedings Volume 2861, (1996) https://doi.org/10.1117/12.245171

KEYWORDS: Scattering, Light scattering, Glasses, Particles, Laser scattering, Polarization, Charge-coupled devices, Reflection, Mie scattering, Refraction

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Proceedings Article | 23 March 1995 Paper

Determination of the mean refractive index and thickness of dichromated gelatin holographic films using the thin film resonance method

Hans Tholl, M. Doehmen, Christo Stojanoff

Proceedings Volume 2405, (1995) https://doi.org/10.1117/12.205351

KEYWORDS: Refractive index, Holography, Holograms, Reflectivity, Interfaces, Thin films, Diffraction, Glasses, Data modeling, Modulation

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Proceedings Article | 23 November 1994 Paper

Development, analysis and performance tests of a chirped laser radar with optoelectronic signal demodulation

Hubertus Luebbers, Jan Mrosik, Christo Stojanoff

Proceedings Volume 2249, (1994) https://doi.org/10.1117/12.196098

KEYWORDS: Signal processing, 3D vision, Bragg cells, Optoelectronics, Oscillators, Signal generators, Modulation, Diodes, Distance measurement, LIDAR

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Proceedings Article | 15 November 1994 Paper

Refractive index determination as a tool for temperature measurement and process control: a new approach

Johannes Schaller, S. Wassenberg, Detlev Fiedler, Christo Stojanoff

Proceedings Volume 2248, (1994) https://doi.org/10.1117/12.194335

KEYWORDS: Refractive index, Liquids, Refraction, Water, Temperature metrology, Ray tracing, Light scattering, Scattering, Spherical lenses, Process control

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Proceedings Article | 15 November 1994 Paper

Digital image processing of double pulse holograms: investigation of velocity and number density of droplets in sprays

Andreas Ante, Johannes Schaller, Detlev Fiedler, Christo Stojanoff

Proceedings Volume 2248, (1994) https://doi.org/10.1117/12.194331

KEYWORDS: Holograms, Holography, Image segmentation, Particles, Image processing, Digital image processing, 3D image reconstruction, CCD cameras, Light scattering, Information operations

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Proceedings Article | 9 November 1994 Paper

New tactile sensor based on holographic optical elements

Guenter Sommer, Stephan Leibbrandt, Christo Stojanoff

Proceedings Volume 2247, (1994) https://doi.org/10.1117/12.193954

KEYWORDS: Sensors, Holography, Diffraction, Holograms, Charge-coupled devices, CCD image sensors, Spatial resolution, Glasses, Diffraction gratings, Robots

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Proceedings Article | 23 September 1994 Paper

Development, analysis and performance tests of a chirped laser radar with optoelectronic signal demodulation

Hubertus Luebbers, Jan Mrosik, Christo Stojanoff

Proceedings Volume 2271, (1994) https://doi.org/10.1117/12.188148

KEYWORDS: Signal processing, Bragg cells, Oscillators, Optoelectronics, Signal generators, Modulation, LIDAR, Diodes, Distance measurement, Sensors

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Proceedings Article | 23 September 1994 Paper

Performance test and initial results obtained with a chirped laser radar with optoelectronic chirp generation and signal demodulation

Hubertus Luebbers, Jan Mrosik, Christo Stojanoff

Proceedings Volume 2271, (1994) https://doi.org/10.1117/12.188142

KEYWORDS: Bragg cells, Signal processing, Modulation, Optoelectronics, Modulators, Signal generators, Oscillators, Diodes, LIDAR, Diffraction

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Proceedings Article | 9 September 1994 Paper

Stacked volume holograms as light-directing elements

Hans Tholl, Ralf Kubiza, Christo Stojanoff

Proceedings Volume 2255, (1994) https://doi.org/10.1117/12.185391

KEYWORDS: Holograms, Diffraction, Volume holography, Diffraction gratings, Holography, Glasses, Visible radiation, Silicon, Holographic optical elements, Optical components

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Proceedings Article | 9 September 1994 Paper

Fabrication and test of a holographic concentrator for two color PV-operation

Klaus Froehlich, Ernst Wagemann, H. Schulat, Hartmut Schuette, Christo Stojanoff

Proceedings Volume 2255, (1994) https://doi.org/10.1117/12.185419

KEYWORDS: Holograms, Holography, Solar cells, Diffraction, Solar radiation, Lenses, Holographic concentrators, Modulation, Refractive index, Diffraction gratings

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Proceedings Article | 7 September 1994 Paper

Methods for influencing the optical properties of dichromated gelatin films

Hartmut Schuette, Vera Dederichs, Christo Stojanoff

Proceedings Volume 2262, (1994) https://doi.org/10.1117/12.185800

KEYWORDS: Holograms, Refractive index, Modulation, Reflection, Absorption, Holography, Scattering, Diffraction, Diffraction gratings, Optical properties

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Proceedings Article | 18 March 1994 Paper

New method for temperature measurements of droplets

Johannes Schaller, S. Wassenberg, Christo Stojanoff

Proceedings Volume 2122, (1994) https://doi.org/10.1117/12.171291

KEYWORDS: Optical spheres, Temperature metrology, Latex, Refraction, Water, Light scattering, Glasses, CCD cameras, Refractive index, Liquids

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Proceedings Article | 20 January 1994 Paper

Conceptual design and practical implementation of dichromated gelatin films as an optimal holographic recording material for large-format holograms

Christo Stojanoff, Olivier Brasseur, Stephan Tropartz, Hartmut Schuette

Proceedings Volume 2042, (1994) https://doi.org/10.1117/12.166349

KEYWORDS: Modulation, Diffraction, Holography, Humidity, Refractive index, Holograms, Holographic materials, Holographic optical elements, Refraction, Manufacturing

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Proceedings Article | 22 October 1993 Paper

Development and fabrication of a hybrid holographic solar concentrator for concurrent generation of electricity and thermal utilization

Klaus Froehlich, Ernst Wagemann, B. Frohn, Jochen Schulat, Christo Stojanoff

Proceedings Volume 2017, (1993) https://doi.org/10.1117/12.161971

KEYWORDS: Solar cells, Holograms, Holography, Gallium arsenide, Diffraction, Optical design, Solar energy, Diffraction gratings, Holographic concentrators, Thermal efficiency

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Proceedings Article | 22 October 1993 Paper

Design optimization and manufacturing of holographic windows for daylighting applications in buildings

Hans Tholl, Christo Stojanoff, Ruediger Kubitzek, Gabriele Willbold-Lohr

Proceedings Volume 2017, (1993) https://doi.org/10.1117/12.161979

KEYWORDS: Holograms, Diffraction, Diffraction gratings, Holography, Optical design, Design for manufacturability, Buildings, Holographic optical elements, Collimation, Polarization

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Proceedings Article | 22 October 1993 Paper

Design and optimization of a holographic concentrator for two-color PV operation

Ernst Wagemann, Klaus Froehlich, Jochen Schulat, Hartmut Schuette, Christo Stojanoff

Proceedings Volume 2017, (1993) https://doi.org/10.1117/12.161965

KEYWORDS: Holography, Diffraction, Diffraction gratings, Gallium arsenide, Optical design, Holographic concentrators, Modulation, Holograms, Silicon, Solar cells

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The subject matter of this research project is to develop, manufacture and field test a spectrally dispersing solar collector system using a holographic solar concentrator in conjunction with spectrally matched advanced solar cells for photovoltaic power generation. The advantage of a holographic solar concentrator as compared to a conventional one is seen in the overall reduction of investment cost and in the possibility to generate inexpensive solar electric power. In this paper we present the techniques specifically developed for the design and manufacturing of efficient holographic optical elements and holographic lens stacks that are used in the fabrication of bandwidth matched solar concentrators for VIS and NIR photovoltaic operation. The lens stack separates the white light radiation into several spectral ranges that are focussed onto photocells possessing corresponding spectral characteristics. Contrary to previously published arrangements, we present here the concept and the design characteristics of a holographic concentrator that allows positioning of the cell in a plane parallel to the lens aperture. The initial idea of using two lenses recorded in the same aperture or same holographic layer focussing onto two off-axis foci proved to be of limited value due to the off-axis focussing that introduces strong reflection and aberration. Here we present a new concept in which the two lenses are shifted in the plane of the aperture so that each lens-cell configuration exhibits axial geometry. Both lenses are designed as axially corrected holographic stacks that include a lens and a correction grating. The design minimizes the cross coupling between the two holographic systems. Stack layouts for AlGaAs/GaAs and GaAs/Si combinations are discussed. Cross-coupling effects and aberrations involving the IR lens are minimized. Experimental diffraction efficiencies are fitted with non-cosinusoidal refractive index modulation showing best performance for 100 by 100 mm² aperture. The theoretical predictions are compared with the first experimental results.

Proceedings Article | 15 February 1993 Paper

Application of off-axis holography to spray investigations: aberration minimization and size determination

Johannes Schaller, Andreas Ante, Thilo Theisen, Christo Stojanoff

Proceedings Volume 1756, (1993) https://doi.org/10.1117/12.140809

KEYWORDS: Holograms, Particles, Holography, Light scattering, 3D image reconstruction, Optical spheres, Interferometry, Spherical lenses, Diffraction, Refraction

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Proceedings Article | 1 December 1991 Paper

Design and fabrication of large-format holographic lenses

Christo Stojanoff, Ruediger Kubitzek, Stephan Tropartz, Olivier Brasseur, Klaus Froehlich

Proceedings Volume 1527, (1991) https://doi.org/10.1117/12.48637

KEYWORDS: Holograms, Holography, Diffraction, Optical design, Diffraction gratings, Holographic optical elements, Glasses, Modulation, Lenses, Mirrors

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Proceedings Article | 1 December 1991 Paper

Photochemical and thermal treatment of dichromated gelatin film for the manufacturing of holographic optical elements for operation in the IR

Christo Stojanoff, Hartmut Schuette, Olivier Brasseur, Ruediger Kubitzek, Stephan Tropartz

Proceedings Volume 1559, (1991) https://doi.org/10.1117/12.50682

KEYWORDS: Diffraction, Holographic optical elements, Holograms, Modulation, Holography, Refractive index, Refraction, Diffraction gratings, Physics, Chemistry

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Proceedings Article | 1 December 1991 Paper

Design, fabrication, and integration of holographic dispersive solar concentrator for terrestrial applications

Christo Stojanoff, Ruediger Kubitzek, Stephan Tropartz, Klaus Froehlich, Olivier Brasseur

Proceedings Volume 1536, (1991) https://doi.org/10.1117/12.49225

KEYWORDS: Holography, Diffraction, Holograms, Holographic concentrators, Holographic optical elements, Solar energy, Solar concentrators, Solar cells, Optical design, Modulation

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Proceedings Article | 1 September 1991 Paper

Development and experimental investigation of a copying procedure for the reproduction of large-format transmissive holograms

Ruediger Kubitzek, Klaus Froehlich, Stephan Tropartz, Christo Stojanoff

Proceedings Volume 1507, (1991) https://doi.org/10.1117/12.47057

KEYWORDS: Holograms, Diffraction, Holography, Reflectivity, Optics manufacturing, Holographic optical elements, Energy efficiency, Mirrors, Glasses, Manufacturing

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Proceedings Article | 1 September 1991 Paper

Manufacturing and reproduction of holographic optical elements in dichromated gelatin films for operation in the infrared

Christo Stojanoff, Stephan Tropartz, Olivier Brasseur, Ruediger Kubitzek

Proceedings Volume 1485, (1991) https://doi.org/10.1117/12.46532

KEYWORDS: Modulation, Holography, Holographic optical elements, Holograms, Diffraction, Diffraction gratings, Refractive index, Optics manufacturing, Refraction, Infrared radiation

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Proceedings Article | 1 September 1991 Paper

Development, manufacturing, and integration of holographic optical elements for laser Doppler velocimetry applications

Christo Stojanoff, Hans Tholl, Hubertus Luebbers, Wilbert Windeln

Proceedings Volume 1507, (1991) https://doi.org/10.1117/12.47063

KEYWORDS: Holography, Holographic optical elements, Diffraction, Beam splitters, Laser Doppler velocimetry, Diffraction gratings, Integrated optics, Optics manufacturing, Holograms, Reflectivity

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Proceedings Article | 1 September 1991 Paper

Development and investigation of dichromated gelatin film for the fabrication of large-format holograms operating at 400-900 nm

Stephan Tropartz, Olivier Brasseur, Ruediger Kubitzek, Christo Stojanoff

Proceedings Volume 1507, (1991) https://doi.org/10.1117/12.47055

KEYWORDS: Holography, Diffraction, Holograms, Glasses, Modulation, Humidity, Holographic optical elements, Optics manufacturing, Manufacturing, Energy efficiency

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Dichromated gelatin layers facilitate the design and fabrication of holographic optical elements of high optical quality and diffraction efficiency. The research efforts are aimed at the development and evaluation of layer deposition techniques for the manufacturing of large- format holograms in dichromated gelatin. The emphasis is placed on the realization of DCG films that exhibit low scattering losses, high thickness constancy over the entire aperture, and especially high modulation capacity. Such properties ensure the attainment of the desired diffraction efficiency, bandwidth, and Bragg-shift. These objectives are achieved by means of precise control of the thickness of the holographic layer while maintaining the capability to modify the refractive index modulation over a wide range. The diffraction efficiency is a nonlinear function of the grating strength, i.e., of the layer thickness, of the wavelength and of the refractive index modulation. The phase of the transmitted light depends upon the spatial distribution of these parameters. The desired thickness of 10 micrometers is achieved by means of nozzle deposition and shows a thickness variation of +/- 1 micrometers over the 1 m2 aperture. The high capacity for index of refraction variation is realized by means of precise control of the flow velocity and of the water evaporation rate during the drying of the film. The exposure duration, the development process, and the subsequent thermal after-treatment of the film facilitate the attainment of the desired modulation characteristics. At present, we have achieved 90% diffraction efficiency at 900 nm for transmissive holographic gratings recorded at 514 nm. This technique permitted the attainment of 96% diffraction efficiency at 650 nm (maximum of the solar spectrum) and a band-width of 400 nm. Holographic solar concentrators are fabricated at present in sizes up to 0.5 by 0.5 m. Current developments will facilitate the fabrication of 1 m2 holographic solar concentrators. The results of the theoretical analysis are compared with the experimental data.

Proceedings Article | 1 August 1991 Paper

Analysis of the chromatic aberrations of imaging holographic optical elements

Hans Tholl, Hubertus Luebbers, Christo Stojanoff

Proceedings Volume 1456, (1991) https://doi.org/10.1117/12.45440

KEYWORDS: Holograms, Holographic optical elements, Holography, Chromatic aberrations, Diffraction, Volume holography, Monochromatic aberrations, 3D image reconstruction, Heads up displays, Head-mounted displays

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Proceedings Article | 1 October 1990 Paper

Evaluation of the performance of an imaging HOE at a shifted reconstruction wavelength

Christo Stojanoff, Hans Tholl, Hubertus Luebbers

Proceedings Volume 1289, (1990) https://doi.org/10.1117/12.20933

KEYWORDS: Holographic optical elements, Wavefronts, Holograms, 3D image reconstruction, Spherical lenses, Cockpit displays, Visualization, Diffraction, Holography, Geometrical optics

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Proceedings Article | 31 March 1989 Paper

Polarizing Holographic Beam Splitters Realized In Dichromated Gelatin

C. Stojanoff, H. Tholl, T. Bleh, W. Windeln

Proceedings Volume 1026, (1989) https://doi.org/10.1117/12.950221

KEYWORDS: Holograms, Diffraction, Polarization, Holography, Diffraction gratings, Refractive index, Reflectivity, Holographic optical elements, Beam splitters, Manufacturing

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Proceedings Article | 21 March 1989 Paper

Recent Developments In Holographic Optical Elements

C. Stojanoff, R. Kubitzek, St. Tropartz, H. Tholl

Proceedings Volume 1117, (1989) https://doi.org/10.1117/12.960939

KEYWORDS: Holograms, Diffraction, Holography, Holographic optical elements, Refractive index, Diffraction gratings, Reflectivity, Spatial frequencies, Modulation, Beam splitters

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Proceedings Article | 6 March 1989 Paper

Optimization Procedure For A Holographic Lens Solar Concentrator

C. Stojanoff, R. Kubitzek, St. Tropartz

Proceedings Volume 1016, (1989) https://doi.org/10.1117/12.949935

KEYWORDS: Holography, Holograms, Diffraction, Spatial frequencies, Manufacturing, Refractive index, Diffraction gratings, Solar concentrators, Holographic concentrators, Energy efficiency

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Proceedings Article | 6 March 1989 Paper

Performance And Bandwidth Analysis Of Holographic Solar Reflectors

H. Tholl, C. Stojanoff

Proceedings Volume 1016, (1989) https://doi.org/10.1117/12.949936

KEYWORDS: Mirrors, Holography, Reflectivity, Refractive index, Holograms, Manufacturing, Spatial frequencies, Reflectors, Refraction, Holographic optical elements

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Proceedings Article | 16 January 1988 Paper

Determination Of Pressure Changes In Fluids By Means Of Gas Bubbles

H.-St. Buchkremer, C. Stojanoff

Proceedings Volume 0952, (1988) https://doi.org/10.1117/12.968870

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Proceedings Article | 12 November 1987 Paper

Design And Optimization Of Holographic Solar Concentrators

C. Stojanoff, H. Tholl, R. Kubitzek

Proceedings Volume 0823, (1987) https://doi.org/10.1117/12.941891

KEYWORDS: Diffraction, Holograms, Diffraction gratings, Holographic concentrators, Photovoltaics, Optical design, Solar energy, Spherical lenses, Spatial frequencies, Optical components

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Proceedings Article | 12 November 1987 Paper

Investigation Of The Properties Of Dichromated Gelatin Layers And Their Influence On The Diffraction Efficiency And On The Bandwidth Of Holographic Solar Concentrators

C. Stojanoff, W. Windein, S. Tropartz

Proceedings Volume 0823, (1987) https://doi.org/10.1117/12.941893

KEYWORDS: Absorption, Holograms, Refractive index, Reflectivity, Spatial frequencies, Diffraction, Holography, Holographic concentrators, Optics manufacturing, Holographic optical elements

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Proceedings Article | 6 October 1987 Paper

Development Of High Efficiency Holographic Optical Elements

C Stojanoff, W Windeln

Proceedings Volume 0812, (1987) https://doi.org/10.1117/12.941614

KEYWORDS: Holography, Optics manufacturing, Holographic optical elements, Holograms, Diffraction, Spherical lenses, Laser Doppler velocimetry, Laser optics, Spatial frequencies, Integrated optics

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Proceedings Article | 10 September 1987 Paper

High Resolution Measurements Of The Spatial Correlations Of The Velocity Field In Turbulent Flows

W. Windeln, C. Stojanoff

Proceedings Volume 0808, (1987) https://doi.org/10.1117/12.941475

KEYWORDS: Correlation function, Holography, Holograms, Laser Doppler velocimetry, Spatial resolution, Inverse optics, Holographic optical elements, Optical design, Optics manufacturing, Laser optics

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Proceedings Article | 23 February 1987 Paper

Development Of Holographic Notch Filters And Filter Stacks For Specific Spectral Transmission

C. Stojanoff, W. Windeln, St. Tropartz

Proceedings Volume 0692, (1987) https://doi.org/10.1117/12.936681

KEYWORDS: Holography, Holograms, Manufacturing, Optical filters, Glasses, Optics manufacturing, Mirrors, Linear filtering, Solar energy, Holographic optical elements

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Proceedings Article | 2 December 1985 Paper

Development Of High Efficiency Holographic Solar Concentrator

Wilbert Windeln, Christo Stojanoff

Proceedings Volume 0562, (1985) https://doi.org/10.1117/12.966290

KEYWORDS: Holography, Diffraction, Spatial frequencies, Holograms, Glasses, Lenses, Refractive index, Energy efficiency, Manufacturing, Diffraction gratings

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