Progress in ultrafast, mid-infrared optical parametric chirped pulse amplifiers pumped at 1 µm
Authors/Creators
- 1. aMax Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, 12489 Berlin, Germany
- 2. bSchool of Analytical Sciences Adlershof SALSA, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
Description
With diode-pumped Yb laser technology reaching maturity, average power scaling of multi-GW, few-cycle, short-wave
and mid-infrared (MIR) optical parametric amplifiers (OPA’s) to the 100-W level has become a reality. Well
established, commercially available oxide crystals offer a relatively straightforward solution in the 1.4-4-μm spectral
range. Extension of the spectral coverage of high-power OPA’s beyond 5 μm may be enabled by novel, wide-bandgap
non-oxide crystals with growth processes still under major development and optimization. Here, we present our results
on the nonlinear optical properties of oxide (LiNbO3, KTiOAsO4) and non-oxide (LiGaS2, BaGa4S7) crystals and the
resulting 100-kHz, ultrafast infrared OPA’s based on these materials. The reported data provide design parameters and
guidelines for high-average-power MIR OPA’s pumped by Yb lasers both below and above 5 μm.
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mero_2020_10.1117-12.2545961.pdf
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