Mr. David M. Hemenway Profile

David M. Hemenway

Distinguished Optical Engineer / Fellow

SPIE Involvement:

Author

Area of Expertise:

optical design , zemax sequential and non-sequential analysis , laser system design , laser design , laser packaging , laser safety officer

Websites:

Company Website

Publications (20)

Proceedings Article | 2 March 2020 Presentation + Paper

Wavelength stabilized fiber-coupled laser modules for DPSS and fiber laser pumping

M. Hemenway, Z. Chen, M. Kanskar, W. Urbanek, D. Dawson, L. Bao, M. DeVito, K. Fortier, R. Martinsen, K. Welch, R. Ballaban

Proceedings Volume 11262, 112620I (2020) https://doi.org/10.1117/12.2547539

KEYWORDS: Semiconductor lasers, Fiber lasers, Diodes, Absorption, Ytterbium, Epitaxy, Diode pumped solid state lasers, Fiber couplers

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Proceedings Article | 2 March 2020 Presentation + Paper

High brightness diodes and 600W 62% efficient low SWaP fiber-coupled package

M. Kanskar, C. Bai, L. Bao, Z. Chen, C. Chiong, M. DeFranza, K. Fortier, M. Hemenway, S. Li, E. Martin, J. Small, B. Tomakian, W. Urbanek, B. Wilkins, J. Zhang

Proceedings Volume 11262, 112620A (2020) https://doi.org/10.1117/12.2547538

KEYWORDS: Diodes, Semiconductor lasers, Fiber lasers, Fiber amplifiers, Polarization, Thermal effects, Defense and security, Scattering, Collimation, Mirrors

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Proceedings Article | 4 March 2019 Presentation + Paper

High brightness diodes and 600W and 60% efficient fiber-coupled packages enabled by reduced-mode (REM) diodes

M. Kanskar, C. Bai, L. Bao, N. Biekert, Z. Chen, M. DeFranza, M. DeVito, K. Fortier, M. Grimshaw, X. Guan, M. Hemenway, S. Li, E. Martin, R. Martinsen, T. Prunty, W. Urbanek, B. Wilkins, J. Zhang, S. Zhang

Proceedings Volume 10900, 109000H (2019) https://doi.org/10.1117/12.2510722

KEYWORDS: Diodes, Semiconductor lasers, Fiber lasers, Directed energy weapons, Polarization, Defense and security, Energy efficiency, Fiber amplifiers, Multiplexers, Mirrors

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Proceedings Article | 4 March 2019 Presentation + Paper

976nm high brightness fiber-coupled laser modules for ytterbium fiber laser pumping

M. Hemenway, Z. Chen, M. Kanskar, W. Urbanek, D. Dawson, L. Bao, M. DeFranza, M. DeVito, K. Fortier, R. Martinsen, K. Welch

Proceedings Volume 10900, 109000D (2019) https://doi.org/10.1117/12.2513911

KEYWORDS: Semiconductor lasers, Fiber lasers, Diodes, Polarization, Multiplexing, Reliability

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Proceedings Article | 14 May 2018 Presentation

High-temperature diode laser pumps for low SWaP directed energy lasers (Conference Presentation)

Manoj Kanskar, Ling Bao, Zhigang Chen, Mark DeVito, Mike Grimshaw, Xinguo Guan, Marty Hemenway, Rob Martinsen, Wolfram Urbanek, Jim Zhang, Shiguo Zhang

Proceedings Volume 10637, 106370D (2018) https://doi.org/10.1117/12.2305010

KEYWORDS: Semiconductor lasers, Directed energy weapons, Fiber lasers, Laser energy, Diodes, Fiber amplifiers, Laser applications, Laser systems engineering, Heatsinks, Laser development

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Proceedings Article | 26 February 2018 Paper

Next-generation fiber lasers enabled by high-performance components

D. A. Kliner, B. Victor, C. Rivera, G. Fanning, D. Balsley, R. Farrow, K. Kennedy, S. Hampton, R. Hawke, E. Soukup, M. Reynolds, A. Hodges, J. Emery, A. Brown, K. Almonte, M. Nelson, B. Foley, D. Dawson, D. Hemenway, W. Urbanek, M. DeVito, L. Bao, J. Koponen, K. Gross

Proceedings Volume 10513, 105130S (2018) https://doi.org/10.1117/12.2292271

KEYWORDS: Laser welding, Ytterbium, Materials processing, Semiconductor lasers, Fiber lasers, Modulation, Laser cutting, Diodes, Reliability, Laser processing

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Proceedings Article | 19 February 2018 Presentation + Paper

Continued advances in high brightness fiber-coupled laser modules for efficient pumping of fiber and solid-state lasers

M. Hemenway, Z. Chen, W. Urbanek, D. Dawson, L. Bao, M. Kanskar, M. DeVito, R. Martinsen

Proceedings Volume 10514, 105140P (2018) https://doi.org/10.1117/12.2290196

KEYWORDS: Diodes, Multiplexing, Semiconductor lasers, Polarization, Fiber lasers, Reliability, Fiber couplers, Fiber coupled lasers, Solid state lasers, Solids

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Proceedings Article | 19 February 2018 Presentation + Paper

Improvement in reduced-mode (REM) diodes enable 315 W from 105-µm 0.15-NA fiber-coupled modules

M. Kanskar, L. Bao, Z. Chen, D. Dawson, M. DeVito, W. Dong, M. Grimshaw, X. Guan, M. Hemenway, R. Martinsen, W. Urbanek, S. Zhang

Proceedings Volume 10514, 105140L (2018) https://doi.org/10.1117/12.2289146

KEYWORDS: Diodes, Semiconductor lasers, Fiber lasers, Continuous wave operation, Materials processing, Solid state lasers, Consumer electronics, Manufacturing, Defense and security, Fiber amplifiers

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Proceedings Article | 7 June 2017 Presentation

High-temperature diode laser pumps for directed energy fiber lasers (Conference Presentation)

Manoj Kanskar, Ling Bao, Zhigang Chen, Mark DeVito, Weimin Dong, Mike Grimshaw, Xinguo Guan, David Hemenway, Robert Martinsen, Jim Zhang, Shiguo Zhang

Proceedings Volume 10192, 101920F (2017) https://doi.org/10.1117/12.2263699

KEYWORDS: Fiber lasers, Semiconductor lasers, Directed energy weapons, Diodes, Fiber amplifiers, Laser applications, Laser systems engineering, Heatsinks, Laser development, Resistance

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Proceedings Article | 22 February 2017 Paper

Continued improvement in reduced-mode (REM) diodes enable 272 W from 105 µm 0.15 NA beam

M. Kanskar, L. Bao, Z. Chen, D. Dawson, M. DeVito, W. Dong, M. Grimshaw, X. Guan, M. Hemenway, R. Martinsen, W. Urbanek, S. Zhang

Proceedings Volume 10086, 1008609 (2017) https://doi.org/10.1117/12.2253000

KEYWORDS: Diodes, Semiconductor lasers, Fiber lasers, Manufacturing, Continuous wave operation, Chemical elements, Optical components, High power lasers, Near field optics

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Proceedings Article | 22 February 2017 Presentation + Paper

Advances in high-brightness fiber-coupled laser modules for pumping multi-kW CW fiber lasers

M. Hemenway, W. Urbanek, D. Dawson, Z. Chen, L. Bao, M. Kanskar, M. DeVito, D. Kliner, R. Martinsen

Proceedings Volume 10086, 1008605 (2017) https://doi.org/10.1117/12.2250656

KEYWORDS: Fiber lasers, Semiconductor lasers, Fiber coupled lasers, Diodes, Optomechanical design, Polarization, Multiplexing, Reliability, Optical design, Space operations, Fiber couplers, Raman scattering

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Proceedings Article | 22 April 2016 Paper

Performance improvements to wavelength stabilized high power 885nm diode laser modules

M. Hemenway, L. Bao, M. Kanskar, M. DeVito, W. Urbanek, M. Grimshaw, K. Bruce, D. Dawson, R. Martinsen, P. Leisher

Proceedings Volume 9730, 97300K (2016) https://doi.org/10.1117/12.2211087

KEYWORDS: Diode pumped solid state lasers, High power lasers, Semiconductor lasers, Laser packaging, Laser stabilization, Diodes, High power diode lasers, Reliability, Failure analysis, Reflectivity, Fiber Bragg gratings, Fermium, Frequency modulation

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Proceedings Article | 4 March 2016 Paper

Reduced-mode (REM) diodes enable high brightness fiber-coupled modules

M. Kanskar, L. Bao, Z. Chen, D. Dawson, M. DeVito, W. Dong, M. Grimshaw, X. Guan, M. Hemenway, K. Kennedy, R. Martinsen, W. Urbanek, S. Zhang

Proceedings Volume 9733, 97330D (2016) https://doi.org/10.1117/12.2214992

KEYWORDS: Semiconductor lasers, Diodes, Fiber lasers, Reliability, Materials processing, Solid state lasers, Diode pumped solid state lasers, Consumer electronics, Manufacturing, Continuous wave operation, Polarization, Solids

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Proceedings Article | 13 March 2015 Paper

High reliability demonstrated on high-power and high-brightness diode lasers

L. Bao, M. Kanskar, Mark DeVito, M. Hemenway, W. Urbanek, M. Grimshaw, Z. Chen, W. Dong, X. Guan, S. Zhang, D. Dawson, R. Martinsen

Proceedings Volume 9348, 93480C (2015) https://doi.org/10.1117/12.2080361

KEYWORDS: Reliability, Semiconductor lasers, High power lasers, Diodes, Laser development, Failure analysis, Fiber lasers, Beam controllers, Thermal effects, Lithium

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Proceedings Article | 13 March 2015 Paper

High-brightness diodes and fiber-coupled modules

M. Kanskar, L. Bao, Z. Chen, M. Hemenway, D. Dawson, M. DeVito, W. Dong, M. Grimshaw, X. Guan, K. Kennedy, R. Martinsen, W. Urbanek, S. Zhang

Proceedings Volume 9348, 934804 (2015) https://doi.org/10.1117/12.2079809

KEYWORDS: Diodes, Semiconductor lasers, Electro optical modeling, Reliability, Data modeling, Solids, High power lasers, Fiber lasers, Thermal effects, Performance modeling

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Proceedings Article | 7 March 2014 Paper

High reliability of high power and high brightness diode lasers

M. Kanskar, L. Bao, J. Bai, Z. Chen, D. Dahlen, M. DeVito, W. Dong, M. Grimshaw, J. Haden, X. Guan, M. Hemenway, K. Kennedy, R. Martinsen, J. Tibbals, W. Urbanek, S. Zhang

Proceedings Volume 8965, 896508 (2014) https://doi.org/10.1117/12.2040851

KEYWORDS: Reliability, Semiconductor lasers, Diodes, Fiber lasers, High power lasers, Continuous wave operation, Near field, Performance modeling, Resistance, Near field optics

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Proceedings Article | 7 March 2014 Paper

High-power fiber-coupled diode lasers with superior brightness, efficiency, and reliability

Keith Kennedy, Marty Hemenway, Wolfram Urbanek, Kylan Hoener, Kirk Price, Ling Bao, David Dawson, Manoj Kanskar, Jim Haden

Proceedings Volume 8965, 89650D (2014) https://doi.org/10.1117/12.2041186

KEYWORDS: Fiber lasers, Diodes, Semiconductor lasers, Reliability, Diode pumped solid state lasers, Manufacturing, Packaging, Fiber couplers, Solid state lasers, Optics manufacturing

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Proceedings Article | 7 March 2014 Paper

High-brightness, fiber-coupled pump modules in fiber laser applications

D. Hemenway, Wolfram Urbanek, Kylan Hoener, Keith Kennedy, Ling Bao, David Dawson, Emily Cragerud, David Balsley, Gary Burkholder, Mitch Reynolds, Kirk Price, Jim Haden, Manoj Kanskar, Dahv Kliner

Proceedings Volume 8961, 89611V (2014) https://doi.org/10.1117/12.2040364

KEYWORDS: Fiber lasers, Reliability, Semiconductor lasers, Neodymium, Diodes, Laser systems engineering, Prototyping, Sensors, Modulation, Laser damage threshold

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Proceedings Article | 26 February 2013 Paper

High brightness fiber coupled pump modules optimized for optical efficiency and power

Kirk Price, Marty Hemenway, Ling Bao, John Bai, Kylan Hoener, Kevin Shea, David Dawson, Manoj Kanskar

Proceedings Volume 8605, 860506 (2013) https://doi.org/10.1117/12.2005385

KEYWORDS: Semiconductor lasers, Fiber couplers, Fiber lasers, Fiber coupled lasers, Laser development, Laser resonators, Diodes, Near field, Materials processing

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Proceedings Article | 14 February 2008 Paper

Tandem photonic amplifier employing a pulsed master oscillator fiber power amplifier with programmable temporal pulse shape capability

B. Baird, X. Peng, W. Ren, D. Hemenway, L. Xu, P. Deladurantaye, Y. Taillon

Proceedings Volume 6871, 68712A (2008) https://doi.org/10.1117/12.771742

KEYWORDS: Amplifiers, Fiber amplifiers, Pulsed laser operation, Neodymium lasers, Modulators, Semiconductor lasers, Optical amplifiers, Oscillators, Laser processing, Pulse shaping

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Showing 5 of 20 publications

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