Dr. Atsushi Nakanishi Profile

Dr. Atsushi Nakanishi

at Hamamatsu Photonics KK

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Publications (3)

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 | 2 March 2020 Presentation + Paper

Terahertz imaging with nonlinear quantum-cascade-laser source

Atsushi Nakanishi, Kazuue Fujita, Hiroshi Satozono

Proceedings Volume 11279, 1127915 (2020) https://doi.org/10.1117/12.2543450

KEYWORDS: Terahertz radiation, Millimeter wave imaging, Quantum cascade lasers, Imaging systems, Semiconductors, Nondestructive evaluation, Spectroscopy

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