Cr4+YAG
Cr4+:YAG Crystal is an excellent crystal for passively Q-switching diode pumped or lamp-pumped Nd:YAG, Nd:YLF, Nd:YVO4 or other Nd and Yb doped lasers at wavelength from 0.8 to 1.2 m. Because of its c..
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Cr4+YAG
Cr4+:YAG Crystal is an excellent crystal for passively Q-switching diode pumped or lamp-pumped Nd:YAG, Nd:YLF, Nd:YVO4 or other Nd and Yb doped lasers at wavelength from 0.8 to 1.2 µm. Because of its chemically stable, durable, UV resistant, good thermal conductivity and high damage threshold (> 500 MW/cm2) and being easy to be operated, it will replace traditional materials, such as LiF, organic Dye and color centers.
Basic Properties
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Chemical Formula
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Cr4+:Y3Al5O12
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Crystal Structure
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Cubic garnet
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Recovery time
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8.5 μs
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Hardness
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8.5 Mohs
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Density
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4.56 g/cm3
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Thermal conductivity
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12.13 W/m/K
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Refractive index
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1.82 @ 1064nm
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Ground state absorption cross section
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σs1=4.3x10-18cm2
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Excited state absorption cross section
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σs2=8.2x10-19cm2
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Fluorescence lifetime
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3.4 μs
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UPT offer Cr:YAG Specifications
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Orientation:
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The rod axis is along [100] within5°,[111] and [110] within5°
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Cr4+ concentration:
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0.5 mol% ~ 3 mol%
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Aperture
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2x2 ~ 20x20 mm
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Length:
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0.1 ~ 12 mm
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Initial transmission:
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5% ~ 99%
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Angle tolerance:
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Δθ< ± 0.5°; Δφ< ±0.5°
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Flatness:
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λ /8 @ 633 nm
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Parallelism:
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20 arc sec
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Perpendicularity:
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5 arc minutes
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Surface finishing:
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20/10 scratch/dig to MIL-O-13830A
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Wavefront distortion:
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less than λ/8 @ 633 nm
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Coating
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AR/HR/PR coating upon customer’s request
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Note: When ordering Cr4+:YAG crystal, please specify the aperture, initial transmission(To) and coatings. Cr:YAG crystals with various ion doped YAG diffusion bonded are also available.