Polarization-maintaining master oscillator fiber amplifier (MOFA) for high-repetition-rate applications

Carlos H. Avila; Ralph L. Burnham; Youming Chen; William Torruellas; Horacio R. Verdun; Richard A. Utano

doi:10.1117/12.537597

7 June 2004 Polarization-maintaining master oscillator fiber amplifier (MOFA) for high-repetition-rate applications

Carlos H. Avila, Ralph L. Burnham, Youming Chen, William Torruellas, Horacio R. Verdun, Richard A. Utano

Proceedings Volume 5335, Fiber Lasers: Technology, Systems, and Applications; (2004) https://doi.org/10.1117/12.537597
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States

Abstract

Various military lidar applications such as underwater mine detection, obstacle avoidance, IRCM, and 3 D lidar incorporate high repetition rate solid-state lasers to accomplish the mission. The recent advances and demonstrations in high power Ytterbium (Yb) fiber lasers/amplifiers make the fiber media a viable alternative to bulk lasers for these applications. The fiber laser geometry maximizes the pump absorption and mode matching for overall high efficiency, (factor-of-two over bulk laser sources) while minimizing thermal effects. In this presentation we will show experimental and modeling results on various master oscillator Yb doped polarization maintaining (PM) fiber amplifiers being developed for high repetition rate applications. We have demonstrated >20 W of average output power with M² <1.3, repetition rates up to 75 kHz and pulse widths ranging from <1 ns to 250 ns. Results of a pulsed PM MOFA efficiently pumping a Periodically Poled Lithium Niobate (PPLN) optical parametric oscillator (OPO) and KTP doubler will also be presented.

Citation Download Citation

Carlos H. Avila, Ralph L. Burnham, Youming Chen, William Torruellas, Horacio R. Verdun, and Richard A. Utano "Polarization-maintaining master oscillator fiber amplifier (MOFA) for high-repetition-rate applications", Proc. SPIE 5335, Fiber Lasers: Technology, Systems, and Applications, (7 June 2004); https://doi.org/10.1117/12.537597

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