TY  - JOUR
AU  - Cheng, Siqi
AU  - Chatterjee, Gourab
AU  - Tellkamp, Friedjof
AU  - Lang, Tino
AU  - Ruehl, Axel
AU  - Hartl, Ingmar
AU  - Dwayne Miller, R. J.
TI  - Compact Ho:YLF-pumped ZnGeP<sub>2</sub> -based optical parametric amplifiers tunable in the molecular fingerprint regime
JO  - Optics letters
VL  - 45
IS  - 8
SN  - 1539-4794
CY  - Washington, DC
PB  - Soc.
M1  - PUBDB-2020-05288
SP  - 2255
PY  - 2020
N1  - Waiting for fulltext
AB  - We report on a compact mid-infrared laser architecture, comprising a chain of ZnGeP2-based optical parametric amplifiers (OPAs), which afford a higher energy yield (<∼60 µJ at 1 kHz) compared to most conventional OPA gain media transparent in the 2–8-µm wavelength range. Specifically, our OPA scheme allows ready tunability in the molecular fingerprint regime and is tailored for strong-field excitation and coherent control of both stretch and bend (or torsional) vibrational modes in molecules. The OPAs are pumped and directly seeded (via supercontinuum generation) by a 2-µm, 3-ps Ho:YLF regenerative amplifier. The compressibility of the OPA output is demonstrated by a representative measurement of the near-Gaussiantemporal profile of a dispersion-compensated 105-fs idler pulse at a central wavelength of 5.1 µm, corresponding to ∼6 optical cycles. Detailed numerical simulations closelycorroborate the experimental measurements, providing a benchmark and a platform to further explore the parameter space for future design, optimization, and implementation of high-energy, ultrafast, mid-infrared laser schemes.
LB  - PUB:(DE-HGF)16
C6  - pmid:32287207
UR  - <Go to ISI:>//WOS:000526401600033
DO  - DOI:10.1364/OL.389535
UR  - https://bib-pubdb1.desy.de/record/453490
ER  -