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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和更大的受激發射截面。激光二極管泵浦的Nd:YVO4晶體與LBO,BBO,KTP等高非線性系數的晶體配合使用,能夠達到較好的倍頻轉換效率,可以制成輸出近紅外、綠色、藍色到紫外線等類型的全固態激光器?,F在Nd:YVO4激光器已在多個領域得到廣泛的應用。而且Nd:YVO4二極管泵浦固態激光器正在迅速取代傳統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:

Nd dopant:
0.27%, 0.3%, 0.4%, 0.5%, 0.7%, 1.0%, 2.0%, 3.0%
Width x Height:
1x1 ~ 16x16mm
Length:
0.02 ~ 20mm

Specifications:

Orientation:
a-cut( ± 0.5° )
Dimensional Tolerance:
+/-0.1mm
Wavefront Distortion:
<λ/8 at 633nm
Surface Quality:
20/10
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: 

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
90 ms (about 50 ms 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 fficiency
> 60%

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

 

Note: Kinds of sizes, coating are available upon request.


   PDF to download

 
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