Dr. Andreas Letsch Profile

Dr. Andreas Letsch

at Robert Bosch GmbH

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Author

Publications (9)

Proceedings Article | 14 March 2016 Paper

CIGS P3 scribes using ultra-short laser pulses and thermal annealing

Gabor Matthäus, Klaus Bergner, Mawuli Ametowobla, Andreas Letsch, Andreas Tünnermann, Stefan Nolte

Proc. SPIE. 9735, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXI

KEYWORDS: Thin films, Solar energy, Electrodes, Laser energy, Annealing, Solar cells, Laser processing, Thin film solar cells, Diodes, Micromachining, Pulsed laser operation, Copper indium gallium selenide

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Proceedings Article | 22 March 2013 Paper

Impact of P2 scribe geometry on monolithic series interconnected CIGS modules

M. Rekow, D. Bartl, C. Sandfort, A. Letsch

Proc. SPIE. 8601, Fiber Lasers X: Technology, Systems, and Applications

KEYWORDS: Oxides, Data modeling, Laser processing, Resistance, Laser ablation, Transparent conductors, Molybdenum, Pulsed laser operation, Copper indium gallium selenide, Instrument modeling

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Proceedings Article | 16 February 2012 Paper

Laser processes for future solar cells

Andreas Letsch, Dominik Bartl, Michael Diez, Roland Gauch, Andreas Michalowski, Margit Hafner

Proc. SPIE. 8243, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XVII

KEYWORDS: Thin films, Photovoltaics, Solar cells, Crystals, Dielectrics, Silicon, Laser processing, Laser ablation, Molybdenum, Pulsed laser operation

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Proceedings Article | 7 February 2012 Paper

Continuous single pulse resolved measurement of beam diameters at 200 kHz using optical transmission filters

Johannes Fruechtenicht, Andreas Letsch, Andreas Voss, Marwan Abdou Ahmed, Thomas Graf

Proc. SPIE. 8236, Laser Resonators, Microresonators, and Beam Control XIV

KEYWORDS: Optical filters, Imaging systems, Spatial filters, Cameras, Sensors, Data storage, Optical testing, Transmittance, Measurement devices, Analog electronics

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Proceedings Article | 23 February 2006 Paper

Characterization of general astigmatic laser beams

Andreas Letsch, Adolf Giesen

Proc. SPIE. 6101, Laser Beam Control and Applications

KEYWORDS: Monochromatic aberrations, Laser therapeutics, Error analysis, Laser beam propagation, Optical testing, CCD cameras, Monte Carlo methods, Optical simulations, Beam propagation method, Standards development

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Proceedings Article | 15 October 2005 Paper

Characterization of a general astigmatic laser beam by measuring its ten second order moments

Andreas Letsch, Adolf Giesen

Proc. SPIE. 5962, Optical Design and Engineering II

KEYWORDS: Monochromatic aberrations, Laser therapeutics, Laser beam propagation, Optical testing, Transmission electron microscopy, CCD cameras, Near field, Optical simulations, Beam propagation method, Standards development

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Proceedings Article | 3 November 2003 Paper

Characterization of YAG laser beams at 1030 nm by diffractive optical correlation filters

Michael Duparre, Barbara Luedge, Carsten Rockstuhl, Andreas Letsch, Siegmund Schroeter, Vladimir Pavelyev

Proc. SPIE. 5175, Laser Beam Shaping IV

KEYWORDS: Superposition, Optical filters, Holograms, Laser development, Computer simulations, Image filtering, Optical simulations, YAG lasers, Electronic filtering, Modes of laser operation

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Proceedings Article | 30 May 2003 Paper

On-line control of laser beam quality by means of diffractive optical components

Michael Duparre, Carsten Rockstuhl, Andreas Letsch, Siegmund Schroeter, Vladimir Pavelyev

Proc. SPIE. 4932, Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization

KEYWORDS: Superposition, Optical filters, Holograms, Resonators, Laser development, Image filtering, Optical simulations, Electronic filtering, Modes of laser operation, Optics manufacturing

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Proceedings Article | 30 May 2003 Paper

Results of a round-robin experiment on reflectivity measurments at a wavelength of 1.06 micron

Detlef Nickel, Christoph Fleig, Andrea Erhard, Andreas Letsch, Adolf Giesen, Marco Jupe, Kai Starke, Detlev Ristau, Oswald Wilhelm, Rudolf Huber, Rainer Haspel, Uwe Schuhmann, Chris Scharfenorth, Hans Joachim Eichler, Stefan Gliech, Angela Duparre, Michael Schulz-Grosser, Anna Krasilnikova, Alexandra Haise, Wolfgang Riede, Ona Balachninaite, Rimantas Grigonis, Valdas Sirutkaitis, Vladimir Kazakevich

Proc. SPIE. 4932, Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization

KEYWORDS: Laser therapeutics, Laser induced damage, Reflectivity, Transmittance, Digital video discs, Spectrophotometry, Laser optics, Laser components, Dielectric mirrors

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Showing 5 of 9 publications

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