Title :
A novel technique to achieve strong colliding-pulse effect in CPM QW LD
Author :
Hong-bo, Sun ; Yu-dong, Li ; Li-zhong, Hu ; Yi-ding, Wang ; Guang-hui, Yu ; Song-yan, Chen ; Yu-xian, Zhang ; Shi-yong, Liu
Author_Institution :
State Key Lab. on Integrated Optoelectron., Jilin Univ., Changchun, China
Abstract :
We introduce in this paper a novel structure to achieve ultrashort optical pulses in colliding-pulse mode-locking (CPM) quantum well laser diodes. Two modulation segments have been introduced symmetrically around the center saturable absorber and the 5-segment CPM-LD is thus fabricated. By changing the injected current on the modulation segments separately, the optical FWHM has been been shortened from 1.6 ps, giving a narrowest pulse width without modulation segments of up to 0.96 ps
Keywords :
electro-optical modulation; high-speed optical techniques; laser mode locking; optical saturable absorption; quantum well lasers; 1.6 to 0.96 ps; 5-segment CPM-LD; CPM QW LD; center saturable absorber; colliding-pulse mode-locking; injected current; modulation segments; narrowest pulse width; quantum well laser diodes; strong colliding-pulse effect; ultrashort optical pulse; Diode lasers; Gratings; Laser mode locking; Optical pulse generation; Optical pulses; Optical scattering; Pulse modulation; Pulse width modulation; Pulsed power supplies; Space vector pulse width modulation;
Conference_Titel :
Indium Phosphide and Related Materials, 1996. IPRM '96., Eighth International Conference on
Conference_Location :
Schwabisch-Gmund
Print_ISBN :
0-7803-3283-0
DOI :
10.1109/ICIPRM.1996.492256
