The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 2012
Filed:
May. 18, 2010
Pascal Deladurantaye, St-Joseph de la Pointe-Levy, CA;
Louis Desbiens, St-Augustin-de-Desmaures, CA;
Yves Taillon, St-Augustin-de-Desmaures, CA;
Dany Lemieux, Quebec, CA;
Brian W. Baird, Portland, OR (US);
Pascal Deladurantaye, St-Joseph de la Pointe-Levy, CA;
Louis Desbiens, St-Augustin-de-Desmaures, CA;
Yves Taillon, St-Augustin-de-Desmaures, CA;
Dany Lemieux, Quebec, CA;
Brian W. Baird, Portland, OR (US);
Institut National d'Optique, Quebec, Quebec, CA;
Abstract
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.