Title Long seed, short pump: converting Yb-doped laser radiation to multi-µJ few-cycle pulses tunable through 2.5–15 µm /
Authors Budriūnas, Rimantas ; Jurkus, Karolis ; Vengris, Mikas ; Varanavičius, Arūnas
DOI 10.1364/OE.455180
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Is Part of Optics express.. Hoboken : Optical Society of America. 2022, vol. 30, iss. 8, p. 13009-13023.. ISSN 1094-4087
Keywords [eng] tunable mid-infrared pulses ; mid-IR laser ; optical parametric amplification
Abstract [eng] We present a setup for generating broadband (up to 1050 cm−1) and broadly tunable (2.5-15 µm) mid-infrared pulses using an Yb-doped femtosecond laser as the pump source. Our scheme, comprising two parametric amplifiers and a mixing stage, exploits favorable group velocity matching conditions in GaSe pumped at 2 µm to directly produce sub-70 fs pulses throughout the tuning range without any additional dispersion compensation, while 30–50 fs pulse durations are achieved with simple dispersion compensation by propagation through thin bulk media. The generated pulses have sub-1% short- and long-term energy noise, as well as stable spectral parameters, while delivering 0.5–2 W average mid-IR power. We expect the source to be useful for various spectroscopic applications in the mid-IR.
Published Hoboken : Optical Society of America
Type Journal article
Language English
Publication date 2022