Nd:YAG Laser Crystals

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Nd:YAG crystals are wildly used in all types of solid-state lasers systems-frequency-doubled continuous wave, high-energy Q-switched, and so forth. Its good fluorescent lifetime thermal conductivity and physical strengths makes it suitable for high power lamp pumped laser.
DeLn Optics general Nd:YAG production capabilities include:
Nd Dopant Concentration: 0.5-1.2 atm%tolerance within 10% of concentration
Diameter: 3 ~ 14mm
Length: 1~ 160mm

Orientation: crystalline direction (+/-0.5)
Wavefront Distortion: 700 MW/cm2(coated)
Coatings: a)AR@1064nm, R99.8%; HT@808nm, T>95%;
d)HR@1064nm, R>99.8%; HT@808nm, T>95%; HR@532nm, R>99%;

Chemical Formula Nd:Y3A15O12
Crystal Structure Cubic
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

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