Spaceflight 100W, 1940nm polarization maintaining Tm doped fiber laser for pumping Q-switched 2um Ho:YLF

Doruk Engin; Slava Litvinovitch; Mark Long; He Cao; Mark Storm

doi:10.1117/12.2507905

4 March 2019 Spaceflight 100W, 1940nm polarization maintaining Tm doped fiber laser for pumping Q-switched 2μm Ho:YLF

Doruk Engin, Slava Litvinovitch, Mark Long, He Cao, Mark Storm

Proceedings Volume 10899, Components and Packaging for Laser Systems V; 108990H (2019) https://doi.org/10.1117/12.2507905
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

Fibertek has designed and is building a spaceflight (TRL 5-6) high-efficiency, high reliability (97.2% for 5-year mission) 100 W average, 1940 nm thulium doped fiber laser (TDFL) meeting all requirements for a NASA Earth Science spaceflight 2 μm Ho:YLF pump laser. These include polarization extinction ratio <16dB, diffraction limited beam quality, narrow linewidth (0.35nm) and >50% optical to optical efficiency. High reliability laser package, optimized for space environment and SWAP has size 10.6”x13.8”x4.4”and weight 30lbs. A summary of laser package design is presented, including structural and thermal analysis. Preliminary environmental testing results of the space laser are also presented. A spaceflight 100 W PM Tm laser provides a path to space for a pulsed, Q-switched 2 μm Ho:YLF laser with ~80 mJ/pulse at 100-200 Hz.

Citation Download Citation

Doruk Engin, Slava Litvinovitch, Mark Long, He Cao, and Mark Storm "Spaceflight 100W, 1940nm polarization maintaining Tm doped fiber laser for pumping Q-switched 2μm Ho:YLF", Proc. SPIE 10899, Components and Packaging for Laser Systems V, 108990H (4 March 2019); https://doi.org/10.1117/12.2507905

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