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- 摻釹釩酸釔（Nd:YVO4)
摻釹釩酸釔（Nd:YVO4)
摻釹釩酸釔（Nd:YVO4）晶體是一種性能優(yōu)良的激光晶體，適于制造激光二極管泵浦特別是中低功率的激光器。與Nd:YAG相比Nd:YVO4對泵浦光有較高的吸收系數(shù)和更大的受激發(fā)射截面。激光二極管泵浦的Nd:YVO4晶體與LBO,BBO,KTP等高非線性系數(shù)的晶體配合使用，能夠達(dá)到較好的倍頻轉(zhuǎn)換效率，可以制成輸出近紅外、綠色、藍(lán)色到紫外線等類型的全固態(tài)激光器?，F(xiàn)在Nd:YVO4激光器已在多個領(lǐng)域得到廣泛的應(yīng)用。而且Nd:YVO4二極管泵浦固態(tài)激光器正在迅速取代傳統(tǒng)的水冷離子激光器和燈泵浦激光器的市場，尤其是在小型化和單縱模輸出方面。
Capabilities:
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Nd dopant:
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0.27%, 0.3%, 0.4%, 0.5%, 0.7%, 1.0%, 2.0%, 3.0%
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Width x Height:
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1x1 ~ 16x16mm
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Length:
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0.02 ~ 20mm
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Specifications:
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Orientation:
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a-cut( ± 0.5° )
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Dimensional Tolerance:
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+/-0.1mm
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Wavefront Distortion:
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<λ/8 at 633nm
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Surface Quality:
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20/10
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Parallelism:
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< 10 arc seconds
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Perpendicularity:
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< 5 arc minutes
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Surface Flatness:
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<λ/10 at 632.8nm
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Clear Aperture:
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Central 95%
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Chamfer:
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0.15x45°
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Coating:
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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:
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Atomic Density
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~1.37x1020 atoms/cm2
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Crystal Structure
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Zircon Tetragonal, space group D4h, a=b=7.12, c=6.29
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Density
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4.22 g/cm3
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Mohs Hardness
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Glass-like, ~5
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Thermal Expansion Coefficient
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aa=4.43x10-6/K, ac=11.37x10-6/K
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Thermal Conductivity Coefficient
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||C: 5.23 W/m/K; ^C: 5.10 W/m/K
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Lasing Wavelengths
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914nm, 1064 nm, 1342 nm
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Crystal Class
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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 |
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Thermal Optical Coefficient
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dna/dT=8.5x10-6/K, dnc/dT=3.0x10-6/K
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Stimulated Emission Cross-Section
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25.0x10-19 cm2 , @1064 nm
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Fluorescent Lifetime
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90 ms (about 50 ms for 2 atm% Nd doped) @ 808 nm
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Absorption Coefficient
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31.4 cm-1 @ 808 nm
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Absorption Length
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0.32 mm @ 808 nm
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Intrinsic Loss
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Less 0.1% cm-1 , @1064 nm
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Gain Bandwidth
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0.96 nm (257 GHz) @ 1064 nm
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Polarized Laser Emission
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p parallel to optic axis (c-axis)
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Diode Pumped Optical to Optical fficiency
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> 60%
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Sellmeier Equation (for pure YVO4 crystals)
no2=3.77834+0.069736/(l2 - 0.04724) - 0.0108133l2
no2=4.59905+0.110534/(l2 - 0.04813) - 0.0122676l2
no2=3.77834+0.069736/(l2 - 0.04724) - 0.0108133l2
no2=4.59905+0.110534/(l2 - 0.04813) - 0.0122676l2
Note: Kinds of sizes, coating are available upon request.
