Scientific Results

Quantum-cascade lasers: Line-narrowing and suppression of flicker-noise

Year: 2016

Authors: Yamanishi M., Hirohata T., Bartalini S., De Natale P.

Autors Affiliation: Central Research Laboratories, Hamamatsu Photonics KK, 5000 Hirakuchi, Hamakita-ku, Hamamatsu, 434-8601, Japan; Instituto Nazionale di Ottica (INO)-CNR, Largo Fermi 6, Firenze FI, 50125, Italy

Abstract: Our results on linewidths of quantum-cascade lasers are reviewed, clarifying physics underlying astonishingly narrow intrinsic linewidths ~100 Hz and showing possible narrowing of extrinsic linewidths down to ~30 kHz by suppression of electrical flicker-noise.

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KeyWords: Linewidth; Optoelectronic devices; Photonics; Semiconductor lasers; Spurious signal noise, Flicker noise; Line-narrowing, Quantum cascade lasers

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