Dr. Masahiro Hitaka Profile

Dr. Masahiro Hitaka

at Hamamatsu Photonics KK

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Author

Publications (6)

Proceedings Article | 9 March 2024 Presentation

An external cavity nonlinear quantum cascade laser with high mid-infrared to terahertz conversion efficiency in the frequency of 1.2-4.5 THz tuning range

Shohei Hayashi, Atsushi Nakanishi, Tatsuo Dougakiuchi, Akio Ito, Masahiro Hitaka, Kazuue Fujita

Proceedings Volume PC12895, PC128950F (2024) https://doi.org/10.1117/12.3001178

KEYWORDS: Terahertz radiation, Quantum cascade lasers, Mid-IR, Quantum frequencies, Laser frequency, Quantum efficiency, Quantum conversion, External quantum efficiency, Terahertz technology, Difference frequency generation

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Proceedings Article | 15 March 2023 Presentation + Paper

Lens-coupled sub-THz and THz quantum cascade laser sources based on intra-cavity frequency mixing

Shohei Hayashi, Akio Ito, Tatsuo Dougakiuchi, Masahiro Hitaka, Atsushi Nakanishi, Kazuue Fujita

Proceedings Volume 12430, 1243007 (2023) https://doi.org/10.1117/12.2648566

KEYWORDS: Terahertz radiation, Quantum cascade lasers, Silicon

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Proceedings Article | 18 November 2019 Paper

Room-temperature monolithic quantum-cascade laser sources operating from 1.1 to 1.5 THz

Kazuue Fujita, Shohei Hayashi, Masahiro Hitaka, Akio Ito, Tatsuo Dougakiuchi, Wei Dong, Hiroyasu Fujiwara

Proceedings Volume 11196, 111960P (2019) https://doi.org/10.1117/12.2536271

KEYWORDS: Terahertz radiation, Quantum cascade lasers, Difference frequency generation, Semiconductors, Light sources, Phase matching, Imaging spectroscopy, Spectroscopes, Light emitting diodes, Nonlinear optics

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Proceedings Article | 26 January 2018 Paper

Development of THz light sources based on QCL technology

Kazuue Fujita, Akio Ito, Masahiro Hitaka, Tatsuo Dougakiuchi, Tadataka Edamura

Proceedings Volume 10540, 105401J (2018) https://doi.org/10.1117/12.2287685

KEYWORDS: Terahertz radiation, Mid-IR, Continuous wave operation, Quantum cascade lasers, Light sources

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Proceedings Article | 20 February 2017 Paper

Narrow-linewidth ultra-broadband terahertz sources based on difference-frequency generation in mid-infrared quantum cascade lasers

Seungyong Jung, Yifan Jiang, Jae Hyun Kim, Luigi Consolino, Saverio Bartalini, Paolo De Natale, Miriam Vitello, Kazuue Fujita, Masahiro Hitaka, Akio Ito, Jeremy Kirch, Dan Botez, Frederic Demmerle, Gerhard Boehm, Markus-Christian Amann, Mikhail Belkin

Proceedings Volume 10123, 1012315 (2017) https://doi.org/10.1117/12.2256099

KEYWORDS: Continuous wave operation, Waveguides, Semiconducting wafers, Quantum cascade lasers, Terahertz radiation, Mid-IR, Quantum efficiency, Terahertz sources, Difference frequency generation, Nonlinear optics, Frequency conversion, Silicon, Semiconductor lasers

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Proceedings Article | 27 January 2017 Presentation + Paper

High photoresponse in room-temperature quantum cascade detectors based on a coupled-well design

T. Dougakiuchi, K. Fujita, T. Hirohata, A. Ito, M. Hitaka, T. Edamura

Proceedings Volume 10111, 101112D (2017) https://doi.org/10.1117/12.2250468

KEYWORDS: Sensors, Quantum chromodynamics, Absorption, Quantum cascade lasers, Waveguides, Temperature metrology, Laser spectroscopy, Absorption spectroscopy, Optical amplifiers, Photonics

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Showing 5 of 6 publications

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