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Cr:YAG Crystal
Cr: Y3Al5O12 Crystal is one of the most promising passive Q-switching materials for passively Q-Switching dioade pumped or lamped Nd or Yb doped lasers at wavelength from 0.8 to 1.2um.The preliminary experiments of Cr:YAG showed that the pulse width of passively Q-switched lasers could be as short as 9 ns for diode pumped Nd:YAG lasers and repetition rate as high as 10kHz for diode pumped Nd:YVO4 lasers. Furthermore, an efficient green output @ 532 nm, and UV output @ 355 nm and 266 nm were generated, after a subsequent intracavity SHG in KTP or LBO, THG and 4HG in LBO and BBO for diode pumped and passive Q-switched Nd:YAG and Nd:YVO4 lasers.
◇High chemica stability and reliability
◇Long life time and good thermal conductivity
◇high damage threshold (>500MW/cm2)
◇As high power,solid state and compact passive Q-Switch
◇Being easy to be operated
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Crystal Structure
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Cubic
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Density
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4.56g/cm2
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Melting Point
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1970℃
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Mohs Hardness
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8.5
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Dopant
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0.5~3% Cr
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Recovery time
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8.5 u s
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Thermal Conductivity
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12.13W/m/K
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Loss Coefficient
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0.003cm-1
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Refractive index
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1.82@1064nm
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Base state absorption cross section
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σ=4.3x10-18/cm2
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Emission state absorption cross section
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σs2=8.2x10-19/cm2
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Fluorescence lifetime
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3.4us
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