Open AccessОсобенности одночастотной генерации в квантово-каскадных лазерах спектрального диапазона 7.5-8.0 μm с малой длиной резонатора
Author(s) -
А.В. Бабичев,
Е.С. Колодезный,
А.Г. Гладышев,
Д.В. Денисов,
Н.Ю. Харин,
А.Д. Петрук,
В.Ю. Паневин,
С.О. Слипченко,
А.В. Лютецкий,
Л.Я. Карачинский,
И.И. Новиков,
Н.А. Пихтин,
А.Ю. Егоров
Publication year - 2022
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2022.05.52147.19050
Subject(s) - lasing threshold , indium phosphide , optoelectronics , cascade , materials science , laser , modulation (music) , waveguide , fabry–pérot interferometer , single mode optical fiber , optics , wavelength , resonance (particle physics) , atomic physics , physics , gallium arsenide , chemistry , chromatography , acoustics
The possibility of realizing single-mode emission in quantum-cascade lasers due to modulation of output optical losses in a Fabry-Perot cavity is demonstrated. For the active region of the 7.5–8.0 μm spectral range, two-phonon resonance design we used thus the 50 stages and waveguide layers based on indium phosphide made it possible to realize single-mode lasing at 7.765 μm and at temperature of 292 K. Side-mode suppression ratio was about 24 dB and remained the same with an increase in the current pumping up to 1.2 of the threshold current values. The coefficient of wavelength shift with temperature (temperature tuning) in the single-mode lasing regime was 0.56 nm / K.