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Proceedings Year : 2022

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

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.
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Dates and versions

hal-04322170 , version 1 (04-12-2023)

Identifiers

Cite

Quentin Bournet, Florent Guichard, Michele Natile, Yoann Zaouter, Frédéric Druon, et al.. Enhanced-efficiency of a mid-IR intrapulse difference-frequency generation. Nonlinear Frequency Generation and Conversion: Materials and Devices XXI, Photonics West 2022, SPIE proceedings, 11985, pp.1198503, 2022, ⟨10.1117/12.2608180⟩. ⟨hal-04322170⟩
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