Experimental and modeling study of Er:YAG kinetics

Daniel O. Hogenboom; Hsian P. Chou

doi:10.1117/12.720524

10 May 2007 Experimental and modeling study of Er:YAG kinetics

Daniel O. Hogenboom, Hsian P. Chou

Proceedings Volume 6552, Laser Source Technology for Defense and Security III; 65520J (2007) https://doi.org/10.1117/12.720524
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

Erbium doped YAG is an intriguing laser material which lases directly at 1645nm when pumped at either 1473nm or 1532nm, all of which are in the eye-safe band. However, a laser made from this material is not particularly straightforward to design. Er:YAG is a quasi-three-level system, which leads to strong temperature dependence. Perhaps more importantly, a strong up-conversion process, which is dopant concentration dependent, effectively produces a pump intensity dependence in the saturation intensity and other laser parameters. We present a detailed study of the absorption coefficient and the gain as a function of the pump intensity, dopant concentration and crystal temperature. The results of this study will allow us to optimally design the laser.

Citation Download Citation

Daniel O. Hogenboom and Hsian P. Chou "Experimental and modeling study of Er:YAG kinetics", Proc. SPIE 6552, Laser Source Technology for Defense and Security III, 65520J (10 May 2007); https://doi.org/10.1117/12.720524

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