aSe Crystal Description
GaSe Crystal is a nonlinear optical material with high damage broadening resistance, a large nonlinear coefficient (54 pm/V), a transmission band between 0.65 and 18 μm, and an ultra-low absorption coefficient, which makes it very important for mid-infrared broadband electromagnetic wave oscillations.
GaSe Crystal Specifications
Transparency range, µm
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0.62 – 20
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Nonlinear Coefficient, pm/V
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d22 = 54 @10.6 µm
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Crystal System
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Hexagonal system, point group 6m2
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Lattice Constant, Å
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a=3.74, c=15.89
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Refractive Index
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no=2.6975, ne=2.3745 @10.6 µm
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no=2.7233, ne=2.3966 @5.3 µm
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Damage Threshold, MW/cm2@1064 nm (t=10 ns)
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30
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Walk-off Angle
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4.1° @5.3 µm
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Mohs Hardness
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2
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Density
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5.03g/cm3
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Forbidden Bandwidth (300K)
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2.2eV
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*For more information on Optical and Nonlinear Optical Properties, please contact us.
GaSe Crystal Application
- SHG of CO2 lasers
- mixing studies in the mid-wave infrared
- OPG light generation in the 3.5-18 μm range
- efficient terahertz generation in the 0.2-5 THz range during femtosecond pulse pumping.
GaSe Crystal Packaging
Our GaSe Crystal is carefully handled during storage and transportation to preserve the quality of our product in its original condition.