Unspecified Victor V. Khitrov Profile

Victor V. Khitrov

Engineer

Publications (17)

Proceedings Article | 3 October 2022 Paper

Hollow-core photonics crystal fiber for CO2 leakage monitoring

Matthew Heyrich, Sarah Sahota, Allan Chang, Victor Khitrov, Tiziana Bond, William Delmas

Proceedings Volume 12229, 1222903 (2022) https://doi.org/10.1117/12.2632666

KEYWORDS: Optical fibers, Photonic crystal fibers, Carbon dioxide, Fiber Bragg gratings, Spectroscopy, Diffusion, Raman spectroscopy, Solids, Biological and chemical sensing, Carbon monoxide

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Proceedings Article | 4 March 2022 Presentation + Paper

First demonstration of dispersion-shifted LMA silica fiber in a high-power 1.6-um laser

Jun Zhang, Charles Yu, Victor Khitrove, Paul Pax, Cody Mart, Mike Runkle, Mike Messerly, Jay Dawson, Mark Dubinskii

Proceedings Volume 11981, 119810S (2022) https://doi.org/10.1117/12.2608370

KEYWORDS: Multimode fibers, Optical fibers, Fiber amplifiers, Optical amplifiers, Modulation, Dispersion, Fiber lasers, Raman spectroscopy, Diodes, Erbium

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Proceedings Article | 5 March 2021 Presentation + Paper

Progress on optical microspheres for CO2 sensors

B. Demory, S. Harrison, L. Echeveria, P. Singh, V. Khitrov, K. Heinz, A. S.-P. Chang, T. Bond, C. Tolfa

Proceedings Volume 11672, 116720R (2021) https://doi.org/10.1117/12.2583278

KEYWORDS: Gas sensors, Microresonators, Carbon dioxide, Thermal optics, Resonators, Sensors, Optical fabrication, Tapered optical fibers, Spherical lenses, Environmental sensing

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Proceedings Article | 2 March 2020 Paper

Microresonators for compact optical sensors (uRCOS) for gas detection

Payal Singh, Sara Harrison, Allan Chang, Ken Heinz, Logan Echeveria, Daniele Farnesi, Tiziana Bond, Gualtiero Nunzi-Conti, Catherine Reinhardt, Victor Khitrov

Proceedings Volume 11266, 112661F (2020) https://doi.org/10.1117/12.2543815

KEYWORDS: Gas sensors, Microresonators, Optical spheres, Resonators, Etching, Glasses, Gases, Tapered optical fibers, Carbon monoxide, Environmental sensing

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Proceedings Article | 26 February 2018 Paper

10W single-mode Nd3+ fiber laser at 1428nm

Victor Khitrov, Jay Dawson, Leily Kiani, Paul Pax, Derrek Drachenberg, Michael Messerly, Robert Crist, Nick Schenkel, Matt Cook

Proceedings Volume 10512, 105121P (2018) https://doi.org/10.1117/12.2284876

KEYWORDS: Fiber amplifiers, Laser sources, Silica, Waveguides, Laser development, Fiber lasers, Diodes, High power fiber amplifiers, Neodymium

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Proceedings Article | 11 March 2016 Paper

Extremely low NA Yb doped preforms (<0.03) fabricated by MCVD

Vincent Petit, Richard Tumminelli, John Minelly, Victor Khitrov

Proceedings Volume 9728, 97282R (2016) https://doi.org/10.1117/12.2214546

KEYWORDS: Refractive index, Cladding, Ions, Laser applications, Laser development, Chemical vapor deposition, Structured optical fibers, Distortion, Fiber lasers, Ytterbium, Absorption

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Proceedings Article | 12 March 2014 Paper

3kW single-mode direct diode-pumped fiber laser

V. Khitrov, J. Minelly, R. Tumminelli, V. Petit, E. Pooler

Proceedings Volume 8961, 89610V (2014) https://doi.org/10.1117/12.2037453

KEYWORDS: Continuous wave operation, Oscillators, Chemical vapor deposition, Multiplexing, Single mode fibers, Fiber lasers, Semiconductor lasers, Laser resonators, Ytterbium, Diodes

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Proceedings Article | 4 May 2010 Paper

kW level narrow linewidth Yb fiber amplifiers for beam combining

Scott Christensen, Kevin Farley, Kanishka Tankala, Imtiaz Majid, Joshua Galipeau, Ryan Leveille, Victor Khitrov, Bryce Samson

Proceedings Volume 7686, 76860A (2010) https://doi.org/10.1117/12.862648

KEYWORDS: Fiber amplifiers, Optical amplifiers, Optical properties, Laser development, Amplifiers, Fiber lasers, Ytterbium, Diodes, Laser damage threshold, Absorption

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Proceedings Article | 12 May 2009 Paper

400W monolithic high efficiency 2 µm MOPA

B. Samson, K. Tankala, T. Ehrenreich, A. Carter, S. Christensen, V. Khitrov

Proceedings Volume 7325, 73250C (2009) https://doi.org/10.1117/12.819311

KEYWORDS: Fiber amplifiers, Oscillators, Phase modulation, Signal attenuation, Amplifiers, Free space, Semiconductor lasers, Diodes, Standards development

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Proceedings Article | 22 February 2008 Paper

50W single-mode linearly polarized high peak power pulsed fiber laser with tunable ns-μs pulse durations and kHz-MHz repetition rates

B. Samson, D. Machewirth, K. Tankala, V. Khitrov

Proceedings Volume 6873, 68730C (2008) https://doi.org/10.1117/12.763198

KEYWORDS: Tunable lasers, Phase modulation, Laser applications, Amplifiers, Distortion, Fiber lasers, Diodes, Pulsed fiber lasers, Molybdenum, Pulsed laser operation

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Proceedings Article | 20 February 2007 Paper

High-peak power-pulsed single-mode linearly-polarized LMA fiber amplifier and Q-switch laser

B. Samson, K. Tankala, A. Held, D. Yan, D. Machewirth, V. Khitrov

Proceedings Volume 6453, 645305 (2007) https://doi.org/10.1117/12.712341

KEYWORDS: Fiber amplifiers, Optical amplifiers, Oscillators, Phase modulation, Q switching, Laser applications, Amplifiers, Fiber lasers, Pulsed laser operation, Q switched fiber lasers

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Proceedings Article | 23 February 2006 Paper

1 kW, 15μJ linearly polarized fiber laser operating at 977 nm

D. Machewirth, K. Tankala, B. Samson, V. Khitrov

Proceedings Volume 6102, 610222 (2006) https://doi.org/10.1117/12.646715

KEYWORDS: Phase modulation, Polarization, Laser applications, Wavelength division multiplexing, Fiber lasers, Semiconductor lasers, Ytterbium, Diodes, Pulsed fiber lasers, Pulsed laser operation

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Proceedings Article | 22 April 2005 Paper

Linearly polarized high-power fiber lasers with monolithic PM-LMA-fiber and LMA-grating based cavities and their use for nonlinear wavelength conversion

D. Machewirth, S. Heinemann, U. Manyam, V. Khitrov, C. Liu, B. Samson, A. Galvanauskas, K. Tankala

Proceedings Volume 5709, (2005) https://doi.org/10.1117/12.590825

KEYWORDS: Diffraction, Continuous wave operation, Polarization, Fiber Bragg gratings, Laser applications, Fiber lasers, Laser resonators, High power fiber lasers, Diodes, Chemical oxygen iodine lasers

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Proceedings Article | 21 February 2005 Paper

Damage mechanisms in components for fiber lasers and amplifiers

Kanishka Tankala, Bryce Samson, David Machewirth, Upendra Manyam, Adrian Carter, Francois Gonthier, Francois Seguin, Victor Khitrov

Proceedings Volume 5647, (2005) https://doi.org/10.1117/12.592015

KEYWORDS: Continuous wave operation, Fiber Bragg gratings, Cladding, Polymers, Glasses, Interfaces, Coating, Reliability, Fiber lasers, Fiber coupled lasers

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Proceedings Article | 8 October 2004 Paper

Continued advancements in the design of double clad fibers for use in high output fiber lasers and amplifiers

Upendra Manyam, David Machewirth, Victor Khitrov, Adrian Carter, Bryce Samson, Kanishka Tankala

Proceedings Volume 5662, (2004) https://doi.org/10.1117/12.596360

KEYWORDS: Optical fibers, Fiber amplifiers, Phase modulation, Polarization, Birefringence, Cladding, Single mode fibers, Fiber lasers, Nonlinear dynamics, Ytterbium

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Fiber lasers have a number of distinct advantages over their more conventional solid state laser alternatives. These advantages include size, reliability, wavelength selectivity, heat dissipation, wall plug efficiency and operational cost. Furthermore they can be operated without the need for active cooling or optical alignment. Consequently the market for these more traditional laser sources are beginning to be eroded by the emergence of fiber lasers. In 1999 high power fiber lasers became a reality, with the world's first single-mode fiber laser exhibiting in excess of 100W cw output. However it was soon recognized that conventional small core, high NA fiber designs were not appropriate to applications requiring further scaling of the output power. More specifically it was found that the maximum achievable output power in such fibers were restricted by a fundamental susceptibility to optical nonlinearities, including stimulated Raman scattering (SRS), stimulated Brillouin scattering (SBS) and self-phase modulation. In order to overcome the limitations imposed by these parasitic nonlinear processes, it has been necessary to develop fibers with high rare-earth dopant concentrations in relatively large core, low numerical aperture fibers. These so-called large mode area (LMA) fibers are directly responsible for the recent explosion in demonstrated diffraction-limited beam quality output powers, now approaching the kW-level from a single fiber. To further scale the output power it is necessary to combine the output of several fiber lasers. Indeed, for a number of industrial and military applications it is desirable to scale the total output power to between several and hundreds of kW's. It is therefore advantageous to be able to coherently combine the beams from multiple fibers and this it turns makes it desirable for the fiber to also be polarization maintaining. This provides yet another layer of complexity to the fiber design but such fibers are now a commercial reality. In this paper we review the recent and ongoing advantages in fiber design that is facilitating the development and production of lasers and amplifiers with ever increasing output powers.

Proceedings Article | 7 June 2004 Paper

Large-mode-area double-clad fibers for pulsed and CW lasers and amplifiers

Jaroslaw Abramczyk, Nils Jacobson, Kanishka Tankala, Upendra Manyam, Victor Khitrov, David Machewirth, Julia Farroni, Douglas Guertin, Adrian Carter

Proceedings Volume 5335, (2004) https://doi.org/10.1117/12.528056

KEYWORDS: Optical fibers, Phase modulation, Cladding, Reliability, Amplifiers, Fiber lasers, Optical testing, Ytterbium, Chemical oxygen iodine lasers, Absorption

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Proceedings Article | 8 March 2004 Paper

Development of a phase diagram to control composite manufacturing using Raman spectroscopy

Stuart Farquharson, Jessica Carignan, Antonio Senador, Victor Khitrov, Montgomery Shaw

Proceedings Volume 5272, (2004) https://doi.org/10.1117/12.512227

KEYWORDS: Spectroscopy, Composites, Manufacturing, Control systems, Raman spectroscopy, Process control, Epoxies, Molecular spectroscopy

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