6533b7d3fe1ef96bd12609b7

RESEARCH PRODUCT

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

Jonas NuberManuel ZeyenAndreas KnechtLaura SinkunaiteRandolf PohlMiroslaw MarszalekKlaus KirchKarsten SchuhmannFrançois NezAldo AntogniniIvo Schulthess

subject

FOS: Physical sciences02 engineering and technology7. Clean energy01 natural scienceslaw.invention010309 opticsFootprint (electronics)symbols.namesake020210 optoelectronics & photonicsOpticslaw0103 physical sciencesThermal0202 electrical engineering electronic engineering information engineeringThin-disk lasers; Multi-pass amplifier; Optical Fourier transform; High power; Relay imaging; Thermal lens; Mirror arrayPhysicsbusiness.industryAmplifierLens (optics)Fourier transformThin disksymbolsThermal lensingbusinessBeam (structure)Optics (physics.optics)Physics - Optics

description

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 M$^2$ = 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 x 1000 mm.

yearjournalcountryeditionlanguage
2019-01-01
10.1117/12.2510427https://hdl.handle.net/20.500.11850/363942