In 2005, CRYLIGHT began to professionally produce high-precision optics and optical imaging lenses.
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Capabilities of Nd:YVO4 Crystal
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STANDARD WAVELENGTH
Specifications of Nd:YVO4 Crystal: | |
Orientation: | a-cut( ± 0.5° ) |
Dimensional Tolerance: | +/-0.1mm |
Wavefront Distortion: | <λ/8 at 633nm |
Surface Quality: | 10月20日 |
Parallelism: | < 10 arc seconds |
Perpendicularity: | < 5 arc minutes |
Surface Flatness: | <λ/10 at 632.8nm |
Clear Aperture: | Central 95% |
Chamfer: | 0.15x45° |
Coating: | 1.AR@1064nm R<0.1% |
2.AR@1064nm R< 0.1% & HT@808nm T>95% | |
3.HR@1064nm R>99.8% & HR@532nm R>99% & HT@808nm T>95% | |
Properties of Nd:YVO4 Crystal: | |
Atomic Density | ~1.37x1020 atoms/cm2 |
Crystal Structure | Zircon Tetragonal, space group D4h, a=b=7.12, c=6.29 |
Density | 4.22 g/cm3 |
Mohs Hardness | Glass-like, ~5 |
Thermal Expansion Coefficient | aa=4.43x10-6/K, ac=11.37x10-6/K |
Thermal Conductivity Coefficient | ||C: 5.23 W/m/K; ^C: 5.10 W/m/K |
Lasing Wavelengths | 914nm, 1064 nm, 1342 nm |
Crystal Class | positive uniaxial, no=na=nb ne=nc |
no=1.9573, ne=2.1652, @ 1064nm | |
no=1.9721, ne=2.1858, @ 808nm | |
no=2.0210, ne=2.2560, @ 532nm | |
Thermal Optical Coefficient | dna/dT=8.5x10-6/K, dnc/dT=3.0x10-6/K |
Stimulated Emission Cross-Section | 25.0x10-19 cm2 , @1064 nm |
Fluorescent Lifetime | 90μs(about 50μs for 2 atm% Nd doped) @ 808 nm |
Absorption Coefficient | 31.4 cm-1 @ 808 nm |
Absorption Length | 0.32 mm @ 808 nm |
Intrinsic Loss | Less 0.1% cm-1 , @1064 nm |
Gain Bandwidth | 0.96 nm (257 GHz) @ 1064 nm |
Polarized Laser Emission | p parallel to optic axis (c-axis) |
Diode Pumped Optical to Optical Efficiency | > 60% |
Sellmeier Equation (for pure YVO4 crystals) no2=3.77834+0.069736/(λ2 - 0.04724) - 0.0108133λ2 no2=4.59905+0.110534/(λ2 - 0.04813) - 0.0122676λ2 | |
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