Optical Q-switching to generate ultra short pulses in diode lasers
 A system for generating an ultra short optical pulse by pumping a semiconductor signal laser with an optical pulse from a semiconductor probe laser. The signal laser has dual segments each operated under different d.c. injection current levels. The probe laser is modulated with a pulsed input and the optical output thereof is coupled via optical means to the signal laser so as to Q-switch the latter. Optical pulses in the 65 ps range result. 
Northern Telecom Limited
H H H H
H01S H01S H01S H01S
additional inventional inventional additional
Toshi Guo P. Rongqing
Makino Li Hui