Method for stablizing an output of a pulsed laser system using pulse shaping
AssigneeInstitut National D'Optique
InventorsPascal Deladurantaye, Louis Desbiens, Yves Taillon, Dany Lemieux, Brian W. Baird
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AssigneeInstitut National D'Optique
InventorsPascal Deladurantaye, Louis Desbiens, Yves Taillon, Dany Lemieux, Brian W. Baird
Estimating the term…
A method for stabilizing an output of a pulsed laser system includes 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.
A method for stabilizing an output of a pulsed laser system, said output being controlled using a pulse shaping signal directly modulating a drive current of a laser diode within said laser system to obtain a desired temporal shape of said output, the method comprising a step of a) controlling the pulse shaping signal to define over time:
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