Title :
Anticompetition Between Laser Modes in Quantum-Dot Laser
Author :
Su, Yi-Shin ; Chiang, Ding-I ; Lin, Ching-Fuh
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei
fDate :
6/15/2007 12:00:00 AM
Abstract :
Anticompetition behavior is observed in a InAs quantum-dot (QD) laser with external wavelength control. Unlike the competition behavior observed in other QD lasers, in this experiment, the laser emission induced by external feedback at the ground state wavelength improves the excited-state emission at 1170 nm by 13 dB. Such an anticompetition phenomenon is most obvious as the feedback wavelength differs from 1250 nm, the original lasing wavelength, by 15 nm. This anticompetition behavior is explained by the sharing of QDs between the laser emission induced by the feedback and the original laser oscillation
Keywords :
excited states; ground states; laser feedback; laser modes; optical control; quantum dot lasers; external feedback; ground state; laser modes anticompetition; quantum-dot laser; Gratings; Laser excitation; Laser feedback; Laser modes; Optical control; Optical feedback; Quantum dot lasers; Quantum well lasers; Semiconductor lasers; State feedback; Carrier dynamics; nonlinear optical device; quantum dots (QDs); semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.897560
