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Proceedings Paper

Modeling of the Co2+ saturable absorber Q-switch for the Er:Yb:glass laser (1.534 um)
Author(s): John B. Gruber; Ann Willson Kennedy; Bahram Zandi; James Andrew Hutchinson
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Paper Abstract

We have modeled the passive Q-switch performance of divalent cobalt and its spectroscopic parameters in various host media for the Er:Yb:Glass laser that operates near 1.534 micrometers . Our method involves the use of rate equations that assume a three-level gain medium and a four-level absorber medium including excited-state absorption. Numerical integration techniques are used where analytical functions are unobtainable to describe the dynamics within the systems that we have examined. Input into the rate equations is obtained from experimental data that include Co2+ ion concentrations, cross-sections, and lifetimes obtained by time-resolved spectroscopy. The calculated laser output in terms of pulse energies and pulsewidths in ns is compared with experimental results based on different Co2+ absorber host matricies and different cavity designs.

Paper Details

Date Published: 23 March 2000
PDF: 8 pages
Proc. SPIE 3928, Nonlinear Materials, Devices, and Applications, (23 March 2000); doi: 10.1117/12.379911
Show Author Affiliations
John B. Gruber, San Jose State Univ. (United States)
Ann Willson Kennedy, San Jose State Univ. (United States)
Bahram Zandi, Army Research Lab. (United States)
James Andrew Hutchinson, U.S. Army Night Vision & Electronic Sensors Directorate (United States)

Published in SPIE Proceedings Vol. 3928:
Nonlinear Materials, Devices, and Applications
Jeffrey W. Pierce, Editor(s)

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