High power 9 µm source for spectroscopy and HHG

Mahesh Namboodiri; Cheng Luo; Torsten Golz; Jan H. Buẞ; Michael Schulz; Robert Riedel; Tim Laarmann; Mark J. Prandolini

doi:10.1117/12.2576133

5 March 2021 High power 9 μm source for spectroscopy and HHG

Mahesh Namboodiri, Cheng Luo, Torsten Golz, Jan H. Buẞ, Michael Schulz, Robert Riedel, Tim Laarmann, Mark J. Prandolini

Proceedings Volume 11670, Nonlinear Frequency Generation and Conversion: Materials and Devices XX; 116700X (2021) https://doi.org/10.1117/12.2576133
Event: SPIE LASE, 2021, Online Only

Abstract

High power mid-infrared (MID-IR) laser systems delivering ultrashort pulses at high repetition rates are of considerable interest for vibrational spectroscopy, label-free microscopy, ultrafast dynamics and HHG studies. To meet these requirements, we developed an optical parametric chirped-pulse amplifier (OPCPA) with a difference frequency generation (DFG) stage to provide an efficient platform to down-convert a 200 W Yb-YAG pump laser into the MID-IR range. The MID-IR pulses are tunable from 4.2-11 μm, with a maximum pulse energy around 9 μm with 2.2 μJ at 200 kHz supporting a Fourier limit of 50 fs. In addition, thermal parameters of various nonlinear crystals are reviewed for high power MID-IR OPCPAs.

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Citation Download Citation

Mahesh Namboodiri, Cheng Luo, Torsten Golz, Jan H. Buẞ, Michael Schulz, Robert Riedel, Tim Laarmann, and Mark J. Prandolini "High power 9 μm source for spectroscopy and HHG", Proc. SPIE 11670, Nonlinear Frequency Generation and Conversion: Materials and Devices XX, 116700X (5 March 2021); https://doi.org/10.1117/12.2576133

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