China Supplier Plano-Concave - BaGa4Se7 Crystals – Dien


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Our company puts emphasis on the management, the introduction of talented personnel, and the construction of staff building, trying hard to improve the quality and liability consciousness of staff members. Our company successfully attained IS9001 Certification and European CE Certification of Agse2 Aggase2 Agga 1-Xinxse2, Mulit-Cystal, Near Infrared Crystal, Because we stay in this line about 10 years. We got best suppliers support on quality and price. And we had weed out suppliers with poor quality. Now many OEM factories cooperated with us too.
China Supplier Plano-Concave - BaGa4Se7 Crystals – Dien Detail:

High-quality crystals of BGSe (BaGa4Se7) is the selenide analogue of the chalcogenide compound BaGa4S7, whose acentric orthorhombic structure was identified in 1983 and the IR NLO effect was reported in 2009, is a newly developed IR NLO crystal. It was obtained via the Bridgman–Stockbarger technique. This crystal exhibits high transmittance over the wide range of 0.47–18 μm, except for an absorption peak at around 15 μm.
The FWHM of the (002) peak rocking curve is about 0.008° and the transmittance through a polished 2 mm thick (001) plate is around 65% over the wide range of 1–14 μm. Various thermophysical properties were measured on crystals.
The thermal expansion behavior in BaGa4Se7 does not exhibit strong anisotropy with αa=9.24×10−6 K−1, αb=10.76×10−6 K−1, and αc=11.70×10−6 K−1 along the three crystallographic axes. The thermal diffusivity/thermal conductivity coefficients measured at 298 K are 0.50(2) mm2 s−1/0.74(3) W m−1 K−1, 0.42(3) mm2 s−1/0.64(4) W m−1 K−1, 0.38(2) mm2 s−1/0.56(4) W m−1 K−1, along the a, b, c crystallographic axis respectively.
In addition, the surface laser damage threshold was measured to be 557 MW/cm2 using a Nd:YAG (1.064 μm) laser under conditions of 5 ns pulse width, 1 Hz frequency, and D=0.4 mm spot size.
BGSe (BaGa4Se7) crystal exhibits a powder second harmonic generation (SHG) response that is approximately 2–3 times that of AgGaS2. The surface laser damage threshold is about 3.7 times that of AgGaS2 crystal under identical conditions.
BGSe crystal has a large nonlinear susceptibility, and may have a broad prospect for practical applications in the mid-IR spectral region.It shows interesting terahertz phonon-polaritons and high nonlinear coefficients for terahertz generation.
Advantages for IR laser output:
Suitable for various pumping source (1-3μm)
Wide tunable IR output range (3-18μm)
OPA, OPO, DFG, intracavity/extravity, cw/pulse pumping
Important notice: Since this this a new type crystal, inside crystal may have few streaks, but we do not accept returnment due to this defect.


Product detail pictures:

China Supplier Plano-Concave - BaGa4Se7 Crystals – Dien detail pictures

China Supplier Plano-Concave - BaGa4Se7 Crystals – Dien detail pictures

China Supplier Plano-Concave - BaGa4Se7 Crystals – Dien detail pictures

China Supplier Plano-Concave - BaGa4Se7 Crystals – Dien detail pictures

China Supplier Plano-Concave - BaGa4Se7 Crystals – Dien detail pictures

China Supplier Plano-Concave - BaGa4Se7 Crystals – Dien detail pictures

China Supplier Plano-Concave - BaGa4Se7 Crystals – Dien detail pictures

China Supplier Plano-Concave - BaGa4Se7 Crystals – Dien detail pictures


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This supplier's raw material quality is stable and reliable, has always been in accordance with the requirements of our company to provide the goods that quality meet our requirements.
5 Stars By Page from Borussia Dortmund - 2017.09.29 11:19
We have been engaged in this industry for many years, we appreciate the work attitude and production capacity of the company, this is a reputable and professional manufacturer.
5 Stars By Gabrielle from Accra - 2018.02.04 14:13