Physics

Infrared

Energy (signal processing)

Mathematics

Laser

Nonlinear optics

Parametric statistics

Optics

Statistics

Materials science

Programming language

Optical parametric oscillator

Computer science

Quantum mechanics

Crystal (programming language)

Optical materials

Optoelectronics

Optics Letters

A high-energy, tunable, long-wave mid-infrared optical parametric oscillator (OPO) based on the BaGa4Se7 crystal was demonstrated in this Letter with 1064 nm laser pumping. The mid-infrared OPO was designed as a double-pass single resonant oscillator (DP-SRO) to reduce the threshold and improve the outputs. Further optimization on the cavity length was theoretically and experimentally studied. With a short cavity length of 30 mm, the output energy of over 1 mJ/pulse at 11 µm was obtained with the pump energy of 39.5 mJ/pulse. In addition, a wide tuning range of 8-14 µm was experimentally achieved by rotating the BaGa4Se7 crystal.

High-energy, tunable, long-wave mid-infrared optical parametric oscillator based on BaGa<sub>4</sub>Se<sub>7</sub> crystal

High-energy, tunable, long-wave mid-infrared optical parametric oscillator based on BaGa4Se7 crystal

High-energy, tunable, long-wave mid-infrared optical parametric oscillator based on BaGa₄Se₇ crystal