Open AccessInfluence of external cavity feedback on the oscillating characteristics of a semiconductor laser
Author(s) -
Chong Liu,
Ge Jian-Hong,
Jun Chen
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.5211
Subject(s) - semiconductor , laser , semiconductor laser theory , physics , diode , laser diode rate equations , power (physics) , optics , semiconductor optical gain , photon , distributed feedback laser , laser power scaling , consistency (knowledge bases) , laser diode , materials science , optoelectronics , injection seeder , quantum mechanics , geometry , mathematics
Through the introduction of effective reflectivity, the influence of external optical feedback on the oscillating characteristics of a semiconductor laser is discussed, such as the threshold gain, laser frequency and output power, according to the self-consistency condition and the photon and carrier density ratio equation. In the experiment, the threshold current of a laser diode decreased from 420mA to 370mA with external cavity feedback and the slope efficiency increased. The output power obtained by theoretical simulation agrees well with the experiment results.