Nonlinear optical (NLO) crystals can convert the frequencies of existing lasers to other
favorable wavelength ranges, and are hence important material basis of photoelectron …

In recent decades, new nonlinear optical materials have been actively developed to create
coherent tunable light sources in the mid-infrared (mid-IR) part of the spectrum used in a …

Mid-infrared (IR) nonlinear optical (NLO) materials with high performance are vital to
expanding the laser wavelengths into the mid-IR region and have important technological …

The linear and nonlinear optical properties of BaGa_4S_7, BaGa_4Se_7, BaGa_2GeS_6,
and BaGa_2GeSe_6 are reviewed, highlighting their potential for frequency …

A BaGa 4 Se 7 nanosecond optical parametric oscillator (OPO) shows extremely wide idler
tunability in the mid-IR (2.7–17 μm) under 1.064 μm pum**. The∼ 10 ns pulses at∼ 7.2 …

Rationally designing new inorganic materials with specific functional properties is a
fascinating challenge. This is particularly true with the nonlinear optical (NLO) crystals …

Barium chalcogenides for nonlinear optics in the mid-IR: Properties and applications -
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We, for the first time, demonstrate a tunable mid-infrared BaGa_4Se_7-based optical
parametric oscillator pumped by a acousto-optical Q-switched Ho: YAG laser at 2090.6 nm …

A mid-infrared BaGa 4 Se 7 optical parametric oscillator with high conversion efficiency and
beam quality is demonstrated, which is pumped by a 2.79-μm electro-optically Q-switched …

We report new experimental results on the phase-matching properties of a BaGa 4 Se 7
crystal for harmonic generation of a Nd: YAG laser-pumped AgGaS 2 optical parametric …