High energy microlaser and compact MOPA transmitter

Brian K. Brickeen; Dave Bernot; Eliot Geathers; Joseph Mosovsky

doi:10.1117/12.883247

25 May 2011 High energy microlaser and compact MOPA transmitter

Brian K. Brickeen, Dave Bernot, Eliot Geathers, Joseph Mosovsky

Author Affiliations +

Proceedings Volume 8039, Laser Technology for Defense and Security VII; 80391A (2011) https://doi.org/10.1117/12.883247
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

A compact micro-oscillator incorporating a dual-bounce, grazing incidence gain module with a folded resonator cavity is presented. The gain module, previously developed for Nd:YVO4, is embodied in highly doped ceramic Nd:YAG to generate improved Q-switch performance while maintaining localized pump absorption. The cavity design utilizes a doubly folded optics path around the gain crystal to increase the intra-cavity mode for a more optimum overlap with the pump light volume produced by standard lensed laser diode bars. A modified CS-package diode mount is developed to facilitate the reduced size of the oscillator without sacrificing the ability to use a high-energy, side-pumping arrangement. The oscillator is combined with a high gain, high energy extraction VHGM amplifier to generate a transmitter source on the order of 50 mJ. Cooling for both the oscillator and amplifier modules is provided via a conductive path through the base of the package. Both devices are mounted on opposite sides of a phase-change cooling reservoir to enable self-contained, burst-mode operation. Beam shaping of the oscillator output, in preparation for injection into the amplifier, is contained in a small cut-away path on the reservoir side.

Citation Download Citation

Brian K. Brickeen, Brian K. Brickeen, Dave Bernot, Dave Bernot, Eliot Geathers, Eliot Geathers, Joseph Mosovsky, Joseph Mosovsky, } "High energy microlaser and compact MOPA transmitter", Proc. SPIE 8039, Laser Technology for Defense and Security VII, 80391A (25 May 2011); doi: 10.1117/12.883247; https://doi.org/10.1117/12.883247

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