Compact 20-pass thin-disk amplifier insensitive to thermal lensing

M. Zeyen; A. Antognini; K. Kirch; A. Knecht; M. Marszalek; F. Nez; J. Nuber; R. Pohl; I. Schulthess; L. Sinkunaite

doi:10.1117/12.2510427

7 March 2019 Compact 20-pass thin-disk amplifier insensitive to thermal lensing

M. Zeyen, A. Antognini, K. Kirch, A. Knecht, M. Marszalek, F. Nez, J. Nuber, R. Pohl, I. Schulthess, L. Sinkunaite

Proceedings Volume 10896, Solid State Lasers XXVIII: Technology and Devices; 108960X (2019) https://doi.org/10.1117/12.2510427
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

We present a multi-pass amplifier which passively compensates for distortions of the spherical phase front occurring in the active medium. The design is based on the Fourier transform propagation which makes the output beam parameters insensitive to variation of thermal lens effects in the active medium. The realized system allows for 20 reflections on the active medium and delivers a small-signal gain of 30 with M² = 1.16. Its novel geometry combining Fourier transform propagations with 4f-imaging stages as well as a compact array of adjustable mirrors allows for a layout with a footprint of 400 mm × 1000 mm.

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Citation Download Citation

M. Zeyen, A. Antognini, K. Kirch, A. Knecht, M. Marszalek, F. Nez, J. Nuber, R. Pohl, I. Schulthess, and L. Sinkunaite "Compact 20-pass thin-disk amplifier insensitive to thermal lensing", Proc. SPIE 10896, Solid State Lasers XXVIII: Technology and Devices, 108960X (7 March 2019); https://doi.org/10.1117/12.2510427

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