掺钕钒酸钆晶体(Nd:GdVO4)

 

掺钕钒酸钆晶体(Nd:GdVO4)是和掺钕钒酸钇单晶(Nd:YVO4)性质相近的优秀的激光晶体,具有优良的物理、光学、机械性能,是理想的激光二极管泵浦全固态(DPSS)微小型激光器的激光工作物质之一.它比Nd:YAG有更高的斜率效率,比钒酸钇有更好的热导和高输出功率,故在高功率DPSS场合,使用Nd:GdVO4的效果会比使用Nd:YAG和Nd:YVO4更好。

Capabilities:

Nd dopant:
0.2 ~ 3 atm%
Width x Height:
1x1 ~ 16x16mm
Length:
0.02 ~ 20mm

Specifications:

Orientation:
a-cut( ± 0.55° )
Dimensional Tolerance:
+/-0.1mm
Wavefront Distortion:
<λ/8 at 632.8nm
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:

Crystal Structure
Zircon Tetragonal, space group D4h, a=b=7.21, c=6.35
Melting Point
1780°C
Density
5.47g/cm3
Mohs Hardness
Glass-like, ~ 5
Thermal Expansion Coefficient
aa=1.5x10-6/K, ac=7.3x10-6/K
Thermal Conductivity Coefficient
11.7 W/m/K <110>
Peak Absorption Wavelength
808.5 nm
Lasing Wavelength
912.6 nm, 1063.1 nm, 1341.3 nm
Crystal Class
positive uniaxial, no=na=nb ne=nc
no=1.9854, ne=2.1981, @ 1064nm
no=2.038184, ne=2.292962, @ 532nm
no=1.9977322, ne=2.219864, @ 808nm
Thermal Optical Coefficient
dn/dT=4.7x10-6/K
Stimulated Emission Cross-Section
7.60x10-19cm2 , @1064 nm
Fluorescent Lifetime
95 ms (1 atm% nd doped) @ 808 nm
Loss Coefficient
0.003 cm-1@ 1064 nm
Absorption Coefficient
74 cm-1 @ 808 nm (1.2%)
Absorption Length
0.32 mm @ 808 nm
Intrinsic Loss
Less 0.1% cm-1 , @1064 nm
Linewidth
0.6 nm
Polarized Laser Emission
parallel to optic axis (c-axis)
Diode Pumped Optical to Optica
Efficiency
> 60%

Sellmeier Equation (for pure GdVO4 crystals)


ne2=4.734369+0.1216149/(l2 - 0.0523664) - 0.013927l2
no2=3.8987165+0.05990622/(l2 - 0.0514395) - 0.011319l2

 

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


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