DocumentCode :
342993
Title :
How to have passively Q-switched lasers self-pulsate
Author :
Shahruz, Shahram M.
Author_Institution :
Eng. Res. Inst., Berkeley, CA, USA
Volume :
2
fYear :
1999
fDate :
2-4 Jun 1999
Firstpage :
780
Abstract :
The rate equations of passively Q-switched lasers are considered. These equations represent the dynamics of the photon number in the laser cavity, the population inversion of the laser, and the ground-state population of the saturable absorber, when excited by an input (pumping rate). Having the rate equations, (i) it is shown that the laser is the bounded-input bounded-state (BIBS) and the bounded-input bounded-output (BIBO) stable; (ii) the amplitudes of step inputs are determined for which all equilibrium points of the laser are unstable. The boundedness of the laser output and the instability of its equilibrium points imply that the laser can have a periodic, a quasi-periodic, or a chaotic output. When the output is periodic, the laser is self-pulsating, which is the desirable behavior of the laser
Keywords :
Q-switching; laser stability; laser theory; optical chaos; optical pumping; optical saturable absorption; population inversion; bounded-input bounded-output stable; bounded-input bounded-state; chaotic output; equilibrium points; ground-state population; laser cavity; passively Q-switched lasers; photon number; population inversion; pumping rate; quasi-periodic; rate equations; saturable absorber; self-pulsating; self-pulsating lasers; Equations; Fiber lasers; Laser excitation; Laser feedback; Laser modes; Laser noise; Laser stability; Noise reduction; Optical noise; Pump lasers;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
American Control Conference, 1999. Proceedings of the 1999
Conference_Location :
San Diego, CA
ISSN :
0743-1619
Print_ISBN :
0-7803-4990-3
Type :
conf
DOI :
10.1109/ACC.1999.783146
Filename :
783146
Link To Document :
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