Directly q-switched high power resonator based on XLMA-fibers

M. Giesberts; O. Fitzau; H.-D. Hoffmann; R. Lange; C. Bachert; V. Krause

doi:10.1117/12.2287783

26 February 2018 Directly q-switched high power resonator based on XLMA-fibers

M. Giesberts, O. Fitzau, H.-D. Hoffmann, R. Lange, C. Bachert, V. Krause

Proceedings Volume 10512, Fiber Lasers XV: Technology and Systems; 1051218 (2018) https://doi.org/10.1117/12.2287783
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

In this paper we present a simple approach to achieving nanosecond pulses from a directly q-switched high-power resonator based on extra-large mode area (XLMA) fibers with a beam quality factor M² < 15. An average output power of > 500 W has been demonstrated for repetition frequencies between 50-100 kHz. The resonator consists of a single fiber q-switched with soldered Pockels-cells which exhibit a very high contrast ratio leading to output pulses down to about 10 ns and peak powers up to > 250 kW at 1064 nm wavelength.

By using this design instead of a fiber MOPA setup, a cost-effective and less complex system could be implemented.

Citation Download Citation

M. Giesberts, O. Fitzau, H.-D. Hoffmann, R. Lange, C. Bachert, and V. Krause "Directly q-switched high power resonator based on XLMA-fibers", Proc. SPIE 10512, Fiber Lasers XV: Technology and Systems, 1051218 (26 February 2018); https://doi.org/10.1117/12.2287783

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