Widely tunable and high resolution mid-infrared laser based on BaGa₄Se₇ optical parametric oscillator

Abstract

The widely tunable and high resolution mid-infrared laser based on a BaGa₄Se₇ (BGSe) optical parametric oscillator (OPO) was demonstrated. A wavelength tuning range of 2.76–4.64 μm and a wavelength tuning resolution of about 0.3 nm were obtained by a BGSe (56.3°, 0°) OPO, which was pumped by a 1064 nm laser. It is the narrowest reported wavelength tuning resolution for BGSe OPO, and was obtained by simultaneously controlling the angle and temperature of BGSe.

Graphical abstract

Keywords

Widely tunable / High resolution / BaGa ₄Se ₇ / Optical parametric oscillator

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