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Tl3AsSe3, Thallium Arsenic Selenide (TAS)
Negative uniaxial crystal: no > ne
Molecular mass: 784.002
Specific gravity: 7.83 g/cm3 [1]
Point group: 3m
Lattice constants [2]:
a = 9.80Å
c = 7.08Å
Mohs hardness: 2–3 [2]
Melting point: 584K [1]
About the crystal
TAS is a rather exotic IR nonlinear crystal. It was developed during the 1970s [1], [2],
[3] and since then was used mainly for SHG of CO2 laser radiation. Recently, a 6-W
quasi CW output at 4.625µm was achieved in this crystal via SHG of 20-ns, 30-kHz
CO2 laser pulses
详细参数下载：http://www.webcryst.com/zh/download/viewdownload/6-/253-tl3asse3-thallium-arsenic-selenide-tas.html
