Products -> Crystal -> Nd:YAG PDF Format
	Nd:YAG           Neodymium Doped Yttrium Aluminum Garnet
	Invented in the sixties of the last century, Nd:YAG has been and continue to be the most widely used laser crystal for solid-state crystal material. Its laser parameters are a good compromise between the strengths and weaknesses of its competition. Nd:YAG crystals are used in all types of solid-state lasers. Compared with others laser crystals, its fluorescence lifetime is twice more than Nd:YVO4 , and thermal conductivity is also better.
	Main Features
	Low Loss at 1064 nm, High Optical Quality , Good Mechanical and Thermal Properties High Gain, Low Threshold, High Efficiency Due to the cubic symmetry and high quality, Nd:YAG is easy to operate with TEM00 mode
	Typical Applications
	Produce blue laserwith the frequency-doubling of 946nm Be Q-switched with Cr:YAG directly Be operated in a very high power laser up to KW level
	Specifications
	Nd Dopant Level 0.5 - 1.1 atm% Orientation <111> crystalline direction (±0.5deg) Dimension Tolerances Diameter                ±0.05 mm ( ±0.002") Length                   ±0.5 mm ( ±0.02") Wavefront Distortion λ/8@633 nm Surface Flatness λ/10@633 nm Parallelism < 10 arc seconds Perpendicularity < 5 arc minutes Surface Quality 10/5 Scratch and Dig Clear Aperture > Central 90% Chamfer <0.1 mm x 45° AR Coating Reflectivity R < 0.25% @ 1064 nm per surface Damage threshold over 750 MW/cm2@ 1064nm, 10 ns and 10 Hz Standard R>99.8% @ 1064nm and R<5% @ 808nm HR Coating Standard R>99.8%@1064nm and R<5%@808nm, Other HR coatings, such as HR @ 1064/532 nm, HR @ 946nm, HR 1319 nm and other wavelengths are also available. Extinction Ratio                     Rods with diameter from 3 mm to 6.35 mm and with length to 100 mm: >30dB                     Rods with diameter from 7 mm to 10 mm and with length to 100 mm: >28dB
	Physical Properties
	Chemical Formula Nd:Y3Al5O12 Crystal Structure Cubic Lattice Constants 12.01 Concentration ~ 1.2 x 1020 cm-3 Melting Point  1970℃ Density 4.56 g/cm3 Mohs Hardness 8.5 Refractive Index 1.82 Thermal Conductivity 14 W/m /K @20℃, 10.5 W /m /K @100℃ Thermal Expansion Coefficient 7.8 x 10-6/K [111], 0 - 250℃
	Optical Properties
	Lasing Wavelengths 1064 nm Photon Energy 1.86x10-19J@1064nm Stimulated Emission Cross-Section 2.8x10-19 cm2 Relaxation Time of Terminal Lasing Level 30 ns Radiative Lifetime 550us Spontaneous Fluorescence 230us Loss Coefficient 0.003 cm-1@ 1064 nm Pump Wavelength 807.5 nm Absorption band at pump wavelength 1 nm Linewidth 0.6nm Polarized Emission Unpolarized Thermal Birefringence High