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Optical Engineering

Control of solid state laser dynamics by semiconductor devices
Author(s): Franz X. Kaertner; Luigi R. Brovelli; Daniel Kopf; Markus Kamp; Irio G. Calasso; Ursula Keller
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Paper Abstract

We have successfully demonstrated that an appropriately designed semiconductor saturable absorber device, the antiresonant Fabry-Perot saturable absorber, can reliably start and sustain stable mode locking of solid state lasers such as Nd:YAG, Nd:YLF, Nd:Glass, Cr:LiSAF, and Ti:sapphire lasers. Especially for solid state lasers with long upper-state lifetimes, previous attempts to produce self-starting passive mode locking with saturable absorbers was always accompanied by self-Q-switching. We derive criteria that characterize the dynamic behavior of solid state lasers in the important regimes of Q-switching, mode-locked Q-switching, and continuous-wave mode locking in the picosecond and femtosecond range for the pulsewidth. We demonstrate that semiconductor absorbers can be designed to predetermine the dynamic behavior of a laser for a given solid state laser material and present an experimental verification. This allows for the development and design of robust, compact pico- and femtosecond solid state laser sources for scientific and industrial applications.

Paper Details

Date Published: 1 July 1995
PDF: 13 pages
Opt. Eng. 34(7) doi: 10.1117/12.204794
Published in: Optical Engineering Volume 34, Issue 7
Show Author Affiliations
Franz X. Kaertner, Swiss Federal Institute of Technology (Switzerland)
Luigi R. Brovelli, Swiss Federal Institute of Technology (Switzerland)
Daniel Kopf, Swiss Federal Institute of Technology (Switzerland)
Markus Kamp, Swiss Federal Institute of Technology (Switzerland)
Irio G. Calasso, Swiss Federal Institute of Technology (Switzerland)
Ursula Keller, Swiss Federal Institute of Technology (Switzerland)

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