H - Electricity – 01 – S
Patent
H - Electricity
01
S
H01S 5/068 (2006.01)
Patent
CA 2704346
A method is provided for stabilizing an output of a pulsed laser system including a directly modulated laser diode by mitigating the effect of switching transients on the temporal shape of the outputted pulses. The method includes controlling a pulse shaping signal to define, over time, processing and conditioning periods. During the processing periods, the pulse shaping signal has an amplitude profile tailored to produce the desired temporal shape of the output. Each conditioning period either immediately precedes or follows a processing period. During a given processing period, the amplitude profile of the pulse shaping signal is tailored so that the drive current of the laser diode is lower than its maximum value during the corresponding processing period, and is of the same order of magnitude as the laser threshold current of the laser diode. In this manner, the stability of the output during the corresponding processing period is improved.
Baird Brian W.
Deladurantaye Pascal
Desbiens Louis
Lemieux Dany
Taillon Yves
Institut National D'optique
Robic
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