High-energy multiwatt femtosecond diode-pumped Yb:CaAlGdO4 and Yb:CaF2 regenerative amplifiers

E. Caracciolo; M. Kemnitzer; A. Guandalini; F. Pirzio; A. Agnesi; Juerg Aus-der-Au

doi:10.1117/12.2078715

20 February 2015 High-energy multiwatt femtosecond diode-pumped Yb:CaAlGdO₄ and Yb:CaF₂ regenerative amplifiers

E. Caracciolo, M. Kemnitzer, A. Guandalini, F. Pirzio, A. Agnesi, Juerg Aus-der-Au

Proceedings Volume 9342, Solid State Lasers XXIV: Technology and Devices; 93421F (2015) https://doi.org/10.1117/12.2078715
Event: SPIE LASE, 2015, San Francisco, California, United States

Abstract

We study and compare the performance of Yb:CaAlGdO₄- and Yb:CaF₂-based regenerative amplifiers at low (5 to 10 kHz) and high (up to 500 kHz) repetition rates. Both materials allow for pulse energies of <1 mJ with sub-400-fs at low repetition rates and up to 9.4 W of average output power at 500 kHz.

Thanks to the good thermal properties of Yb:CaF₂ and Yb:CALGO, the extracted energy has the potential to be significantly increased with further pump power scaling. Shorter pulses are also potentially achievable by optimizing the design of stretcher and compressor in order to better compensate higher-order dispersion and reduce nonlinear effects.

These laser sources are extremely interesting for industrial applications where high pulse energies at relative high repetition rates allow to considerably reduce the manufacturing throughput time.

Citation Download Citation

E. Caracciolo, M. Kemnitzer, A. Guandalini, F. Pirzio, A. Agnesi, and Juerg Aus-der-Au "High-energy multiwatt femtosecond diode-pumped Yb:CaAlGdO₄ and Yb:CaF₂ regenerative amplifiers", Proc. SPIE 9342, Solid State Lasers XXIV: Technology and Devices, 93421F (20 February 2015); https://doi.org/10.1117/12.2078715

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