Open AccessОценка вклада поверхностной рекомбинации в микродисковых лазерах с помощью высокочастотной модуляции
Author(s) -
А.Е. Жуков,
Э.И. Моисеев,
Н.В. Крыжановская,
С.А. Блохин,
М.М. Кулагина,
Ю.А. Гусева,
С.А. Минтаиров,
Н.А. Калюжный,
А.М. Можаров,
Ф.И. Зубов,
М.В. Максимов
Publication year - 2019
Publication title -
fizika i tehnika poluprovodnikov
Language(s) - English
Resource type - Journals
eISSN - 1726-7315
pISSN - 0015-3222
DOI - 10.21883/ftp.2019.08.48005.9098
Subject(s) - materials science , modulation (music) , relaxation (psychology) , thermal , laser , atomic physics , optoelectronics , optics , physics , thermodynamics , acoustics , psychology , social psychology
Microdisk lasers 10–30 μm in diameter operating at room temperature without thermal stabilization and with an active region based on nanostructures of hybrid dimensionality—quantum wells–dots—are investigated. High-frequency measurements of the microlaser response are performed in the direct small-signal modulation mode, which makes it possible to establish the parameters of the operating speed and analyze their dependence on the microlaser diameter. It is found that the K factor is (0.8 ± 0.2) ns, which corresponds to optical losses of ~6 cm^–1, and no regular dependence on the diameter is observed. It is found that the low-frequency component of the damping coefficient of relaxation oscillations is inversely proportional to the diameter. This character of the dependence evidences a decrease in the carrier lifetime in small-diameter microcavities, which can be associated with the prevalence of nonradiative recombination on their side walls.