250 W average power, 100 kHz repetition rate cryogenic Yb:YAG amplifier for OPCPA pumping

Optics Letters
L E ZapataF X Kärtner

Abstract

A cryogenically cooled, bulk Yb:YAG, four-pass amplifier delivering up to 250 W average power at 100 kHz repetition rate is reported. The 2.5 mJ amplified optical pulses show a sub-20 ps duration before temporal compression and a spectrum supporting a transform-limited duration of 3.6 ps. The power instabilities were measured to be <0.5% rms over 30 min at full power, and the spatial intensity profile showed a flat-top distribution and near diffraction-limited beam quality. This compact amplifier is an ideal source for pumping either near-IR or mid-IR optical parametric chirped pulse amplifiers.

Citations

Feb 9, 2019·Optics Express·Koustuban Ravi, Franz Kärtner
Feb 29, 2020·Science Advances·Ayman AlismailHanieh Fattahi
Sep 9, 2016·Optics Express·Xiaojun WuFranz X Kärtner
Jul 16, 2016·Optics Letters·Cory BaumgartenBrendan A Reagan
Aug 16, 2016·Optics Letters·Moritz UeffingFerenc Krausz
Dec 17, 2020·Optics Letters·Yong WangJorge J Rocca

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