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Old 08-26-2008, 03:22 PM #1
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Default Neodymium Doped Yttrium Aluminum Garnet (Nd:YAG) &

Neodymium Doped Yttrium Aluminum Garnet (Nd:YAG)



Neodymium Doped Yttrium Aluminum Garnet (Nd:YAG)
Nd:YAG crystal is the most widely used laser crystal on solid-state laser. Newoptics are able to stably supply the quality of Nd;YAG rods with high optical homogeneity, consistent performance, high processing accuracy and on time delivery.



1. Basic Properties (1.0 atm% Nd doped)
Chemical Formula Nd:Y3Al5O12
Crystal Srtueure Cubie
Lattice Constants 12.01 A
Concentration ~1.2 X 1020 cm-3
Melting Point 1970 deg C
Density 4.56 g/cm3
Mohs Hardness 8.5
Refractive Index 1.82 @ 1.64nm
Thermal Expansion Coefficient 7.8 x10-6/K[111],0 -250 deg C
Thermal Conductivity 14W/m /K @20 deg C; 10.5W/m /K @100 deg C
Lasing Wavelength 1064nm
Stimulated Emission Cross Section 2.8x10-19 cm-2
Relaxation Time of Terminal Lasing Level 30ns
Radiative Lifetime 550ms
Spontaneous Fluorescence 230ms
Loss Coefficient 0.003 cm-1 @ 1064nm
Effective Emission Cross Section 2.8x10-19cm2
Pump Wavelength 807.5nm
Absorption band at pump wavelength 1 nm
Linewidth 0.6nm
Polarized Emission Unpolarized

2. Srandard Products specification


Dopant Concentration (atomic %): 0.9%~ 1.1%
Orientation: <111> crystalline direction
Wavefront distortion: l/8 per inch @ 633 nm
Extinction Ratio::>28 dB
Dimension Tolerance: +/-0.05mm for diameter, +/-0.2mm for length
Parallelism: < 10 arc seconds
Perendicularity: < 5 arc minutes
Surface Quality: 10-5 scratch and dig
Surface Flatness: <lambda/10 @633nm
AR Coating: R< 0.1%@ 1064nm
Damage Threshold: > 500MW/cm2 @1064nm, 10ns, 10 Hz

www.newoptics.com.cn
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