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Green Laser Microchip,
Nd:YVO4,
Nd:GdVO4,
Nd:YAG,
Yb:YAG,
Cr4+:YAG,
Ce3+:YAG, Nd3+:Ce3+:YAG, Er3+:YAG, Mg:Cr:LiTaO3, Ti3+:Al2O3, Laser Ruby Neodymium Doped Yttrium Aluminum Garnet (Nd:YAG)
Nd:YAG is still the important solid laser material with the most excellent comprehensive properties up to now. Basic Properties:
Chemical Formula:
Nd:Y3Al5O12
Crystal Structure:
Cubic
CLattice Constants:
12.01
Melting Point:
1970¡ãC
Density:
4.56 g/cm3
Mohs Hardness:
8.5
Thermal Expansion Coefficient:
7.8 x 10-6 /K [111], 0 - 250 oC
Thermal Conductivity Coefficient:
14 W/m /K @20¡ãC, 10.5 W /m /K @100¡ãC.
Refractive Index:
1.82
Lasing Wavelength:
1064 nm
Stimulated Emission Cross-Section:
2.8x10-19 cm-2
Relaxation Time of Terminal Lasing Level:
30 ns
ARadiative Lifetime:
550 ms
Spontaneous Fluorescence:
230 ms
Loss Coefficient:
0.003 cm-1 @ 1064 nm
Effective Emission Cross Section:
2.8 x 10-19 cm2
Absorption band at pump wavelength:
1 nm
Linewidth:
0.6 nm
Polarized Emission:
Unpolarized
Thermal Birefringence:
High
Main Specifications:
Dimension:
Rods: (3¡«10)mm¡Á(30¡«180)mm, S-labs: (3¡«12)mm¡Á(6¡«24)mm¡Á(60¡«180)mm
Nd Dopant Level:
0.5~1.2(¡À0.1)atm%
Wavefront Distortion:
¦Ë/8
Orientation:
<111>¡À30arc minute
Surface quality:
10/5 @MIL-O-13830A
Flatness:
¦Ë/8 at 633 nm
Parallelism:
< 10 arc sec.
Diameter tolerance:
¡À0.05mm
Length tolerance:
¡À0.5mm
Perpendicularity:
< 5 arc minutes
Parameters of Laser:
Point efficiency of long pulse:
3.2%(lamp pumped,20J input)
Slope efficiency of long pulse:
4.1%
Interference Fringes:
¡Ü0.25/inch
Extinction Ration:
¡Ý30dB
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