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Nd:YAG Crystal

Nd:YAG (neodymium-doped yttrium aluminium garnet; Nd:Y3Al5O12) is a crystal that is used as a lasing medium for solid-state lasers. The dopant, triply ionized neodymium, typically replaces yttrium in ..

Nd:YAG Crystal

产品说明

Nd:YAG (neodymium-doped yttrium aluminium garnet; Nd:Y3Al5O12) is a crystal that is used as a lasing medium for solid-state lasers. The dopant, triply ionized neodymium, typically replaces yttrium in the crystal structure of the yttrium aluminium garnet (YAG), since they are of similar size. Generally the crystalline host is doped with around 1% neodymium by atomic percent.

Applications:


Nd:YAG absorbs mostly in the bands between 730–760 nm and 790–820 nm.At low current densities krypton flashlamps have higher output in those bands than do the more common xenon lamps, which produce more light at around 900 nm. The former are therefore more efficient for pumping Nd:YAG lasers.

Specifications

Nd Dopant Concentration: 0.5-1.2 atm%tolerance within 10% of concentration
Diameter: 3 ~ 14mm
Length(L): 0.5~160mm
Orientation: <111> crystalline direction (+/-0.5℃)
Flatness: <λ/8 @ 633nm
Smooth Finish: 20/10
Parallelism: <30"
Perpendicularity: <10'
Wavefront Distortion: < λ/8 @ 633nm
Clear Aperture: > 90%
Coating: According to customer request

Physical and Optical Properties:

Chemical Formula: Nd:Y3A15O12
Crystal Structure: Cubic
Lattice Constants: 12.01Ä
Concentration: ~ 1.2 x 1020 cm-3
Melting Point: 1970 °C
Density: 4.56 g/cm3
Mohs Hardness: 8.5
Refractive Index: 1.82
Thermal Expansion Coefficient: 7.8 x 10-6 /K [111], 0 - 250 °C
Thermal Conductivity: 14 W/m /K @20 °C, 10.5 W /m /K @100 °C
Lasing Wavelength: 1064 nm
Stimulated Emission Cross Section: 2.8x10-19 cm-2
Relaxation Time of Terminal Lasing Level: 30 ns
Radiative 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
Pump Wavelength: 807.5 nm
Absorption band at pump wavelength: 1 nm
Linewidth: 0.6 nm
Polarized Emission: Unpolarized
Thermal Birefringence: High