Modeling of the Co2+ saturable absorber Q-switch for the Er:Yb:glass laser (1.534 um)

John B. Gruber; Ann Willson Kennedy; Bahram Zandi; James Andrew Hutchinson

doi:10.1117/12.379911

23 March 2000 Modeling of the Co²⁺saturable absorber Q-switch for the Er:Yb:glass laser (1.534 um)

John B. Gruber, Ann Willson Kennedy, Bahram Zandi, James Andrew Hutchinson

Proceedings Volume 3928, Nonlinear Materials, Devices, and Applications; (2000) https://doi.org/10.1117/12.379911
Event: Symposium on High-Power Lasers and Applications, 2000, San Jose, CA, United States

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.

Citation Download Citation

John B. Gruber, Ann Willson Kennedy, Bahram Zandi, and James Andrew Hutchinson "Modeling of the Co²⁺saturable absorber Q-switch for the Er:Yb:glass laser (1.534 um)", Proc. SPIE 3928, Nonlinear Materials, Devices, and Applications, (23 March 2000); https://doi.org/10.1117/12.379911

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