Enhanced-efficiency of a mid-IR intrapulse difference-frequency generation

Quentin Bournet; Florent Guichard; Michele Natile; Yoann Zaouter; Frederic Druon; Marc Hanna; Patrick Georges

doi:10.1117/12.2608180

4 March 2022 Enhanced-efficiency of a mid-IR intrapulse difference-frequency generation

Quentin Bournet, Florent Guichard, Michele Natile, Yoann Zaouter, Frederic Druon, Marc Hanna, Patrick Georges

Proceedings Volume 11985, Nonlinear Frequency Generation and Conversion: Materials and Devices XXI; 1198503 (2022) https://doi.org/10.1117/12.2608180
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

We report on an ultra-broadband tunable mid-IR source delivering 110 nJ, 64 fs-long pulses at 250 kHz repetition rate. The experiment starts with a Yb-doped fiber amplifier system delivering 200 μJ, 300 fs-long pulses, followed by a 70% high-efficiency dual-stage nonlinear compression based on a multipass cell and a 1 m-long capillary filled with argon. The 9.5 fs-long resulting pulses drive intrapulse difference-frequency generation (iDFG) in a 1 mm-thick LiGaS₂ crystal and a specially designed waveplate is used prior to this crystal to further enhance the iDFG yield. This source paves the way for new experiments in 2D ultrafast spectroscopy.

Conference Presentation

Citation Download Citation

Quentin Bournet, Florent Guichard, Michele Natile, Yoann Zaouter, Frederic Druon, Marc Hanna, and Patrick Georges "Enhanced-efficiency of a mid-IR intrapulse difference-frequency generation", Proc. SPIE 11985, Nonlinear Frequency Generation and Conversion: Materials and Devices XXI, 1198503 (4 March 2022); https://doi.org/10.1117/12.2608180

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