Few-cycle, broadband, mid-infrared optical parametric oscillator pumped by a 20-fs Ti:sapphire laser

Laser & Photonics Reviews
Suddapalli Chaitanya KumarMajid Ebrahim-Zadeh

Abstract

A few-cycle, broadband, singly-resonant optical parametric oscillator (OPO) for the mid-infrared based on MgO-doped periodically-poled LiNbO3 (MgO:PPLN), synchronously pumped by a 20-fs Ti:sapphire laser is reported. By using crystal interaction lengths as short as 250 µm, and careful dispersion management of input pump pulses and the OPO resonator, near-transform-limited, few-cycle idler pulses tunable across the mid-infrared have been generated, with as few as 3.7 optical cycles at 2682 nm. The OPO can be continuously tuned over 2179-3732 nm (4589-2680 cm(-1)) by cavity delay tuning, providing up to 33 mW of output power at 3723 nm. The idler spectra exhibit stable broadband profiles with bandwidths spanning over 422 nm (FWHM) recorded at 3732 nm. The effect of crystal length on spectral bandwidth and pulse duration is investigated at a fixed wavelength, confirming near-transform-limited idler pulses for all grating interaction lengths. By locking the repetition frequency of the pump laser to a radio-frequency reference, and without active stabilization of the OPO cavity length, an idler power stability better than 1.6% rms over >2.75 hours is obtained when operating at maximum output power, in excellent spatial beam quality ...Continue Reading

References

Aug 19, 2008·Optics Letters·Samuel T WongRobert L Byer
May 5, 2009·Optics Letters·Florian AdlerJun Ye
Mar 15, 1995·Optics Letters·A StinglR Szipöcs

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Citations

Jan 26, 2016·Physical Chemistry Chemical Physics : PCCP·M Vainio, L Halonen
Sep 15, 2015·Optics Letters·Richard A McCracken, Derryck T Reid
Feb 14, 2015·Optics Letters·V Ramaiah-BadarlaM Ebrahim-Zadeh
Apr 16, 2016·Optics Letters·V Ramaiah-BadarlaM Ebrahim-Zadeh
Oct 3, 2018·Optics Letters·Pei Liu, Zhaowei Zhang
Jan 1, 2018·Applied Physics. B, Lasers and Optics·Kana IwakuniJun Ye
May 15, 2015·Applied Optics·Chenhui HuangYuji Matsuura
Sep 16, 2017·Optics Letters·Hanyu YeM Ebrahim-Zadeh
Jan 2, 2021·International Journal of Molecular Sciences·Luigi SantamariaPasquale Maddaloni

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