High-pressure synthesis, growth and characterization of large-size BaGa4Se7 crystals

A Stable and Compact Mid-IR at 6.45 μm Exceeding 6 mJ of Pulse Energy BaGa4Se7 Optical Parametric Oscillator

“…First, the BGSe crystal was synthesized by high pressure, which can provide more homogeneous polycrystalline raw material with fewer impurities. Second, the crystal growth temperature field was optimized with the use of COMSOL Multiphysics simulation software to help reduce the internal defects of crystals and obtain large-size samples [22]. In addition, the transmission curve of the uncoated BGSe sample with a thickness of 15 mm, in the range of 0.2~20 µm, is shown in Figure 1b.…”

Structural strategy for advancing nonlinear optical effects in 1D-[MX2]∞ chains: internal distortion and atomic types

“…[8][9][10][11] Several new generation MIR-NLO crystals, including Li 1−x Ag x GaSe 2 , BaGe 4 Se 7 , La 3 Nb 0.5 Ga 5.5 O 14 , and others, have been progressively utilized in industrial production and practical applications. [12][13][14] Considering the increasing demand for high-performance MIR-NLO crystals, it is necessary to conduct rst-principles research on materials. Alongside traditional research on electronic orbitals, recent years have witnessed the emergence of various sophisticated chemical computing soware.…”

“…8–11 Several new generation MIR-NLO crystals, including Li 1− x Ag x GaSe 2 , BaGe 4 Se 7 , La 3 Nb 0.5 Ga 5.5 O 14 , and others, have been progressively utilized in industrial production and practical applications. 12–14…”

Ga(IO3)3: a mid-IR nonlinear optical iodate with balanced performance between band gap and second harmonic generation response

“…Photoelectric functional crystals, which are widely used as core optical devices in solid state lasers, are of great significance for the development of modern laser technology. [1][2][3] Nonlinear optical (NLO) materials, typically KBe 2 BO 3 F 2 (KBBF), 4 b-BaB 2 O 4 (b-BBO), 5 a-LiIO 3 , 6 BaGa 4 S/Se 7 (BGS/BGSe), 7,8 etc., can effectively realize frequency conversion and broaden the working wavelength using optical parameter oscillators, optical parameter amplification, frequency doubling, difference frequency generation, and so on, which make them widely useful in civil and military fields. With the development of modern laser technology, more stringent requirements of NLO crystals are proposed.…”