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Proceedings Paper

Demonstration of a high output power 1533nm optical parametric oscillator pumped at 1064nm
Author(s): Robert J. Foltynowicz; Michael D. Wojcik
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Paper Abstract

A high output power, eye-safe, LIDAR transmitter based on a KTA optical parametric oscillator (OPO) was demonstrated. The OPO was based on a two crystal, NCPM, KTA ring cavity which was doubly resonant. A 7ns, 30Hz, flashlamp-pumped, Q-switched Nd:YAG laser was injection seeded and used to pump the OPO. The OPO converted the 1064 nm pump beam into a 1533 nm signal wave and 3475 nm idler wave. In addition to demonstrating a high power OPO system, we investigated the effects of seeding the pump laser on the OPO's conversion efficiency, oscillation threshold, maximum signal power, and beam quality. The power conversion efficiency between the signal and the injection seeded pump was 22% with an oscillation threshold of 104 MW/cm2 (500 mJ) and a maximum signal power of 6.44 W (215 mJ). The power conversion efficiency between the signal and the unseeded pump was 24% with an oscillation threshold of 77 MW/cm2 (367mJ) and a maximum signal power of 7 W (233 mJ). The beam quality of the signal beam was produced an M2 =15. When the pump laser was seeded, the full angle divergence improved by nearly a factor of five.

Paper Details

Date Published: 12 October 2010
PDF: 6 pages
Proc. SPIE 7838, Optics and Photonics for Counterterrorism and Crime Fighting VI and Optical Materials in Defence Systems Technology VII, 783815 (12 October 2010); doi: 10.1117/12.865125
Show Author Affiliations
Robert J. Foltynowicz, Utah State Univ. (United States)
Michael D. Wojcik, Utah State Univ. (United States)


Published in SPIE Proceedings Vol. 7838:
Optics and Photonics for Counterterrorism and Crime Fighting VI and Optical Materials in Defence Systems Technology VII
Colin Lewis; Doug Burgess; Roberto Zamboni; François Kajzar; Emily M. Heckman, Editor(s)

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