Laser Crystals --------- Nd:Ce:YAG

Nd:Ce:YAG is an excellent laser material used for no-water cooling and miniature laser          systems. 

Physical and Chemical Properties
Chemical formula	Nd3+:Ce3+:Y3Al5O12
Crystal Structure	Cubic
Lattice Parameters	12.01A
Melting Point	1970 ℃
Moh Hardness	8.5
Density	4.56±0.04g/cm3
Specific Heat (0-20)	0.59J/g.cm3
Modulus of Elasticity	310GPa
Young's Modulus	3.17×104Kg/mm2
Poisson Ratio	0.3(est.)
Tensile Strength	0.13~0.26GPa
Thermal Expansion Coefficient	[100]:8.2 × 10-6/ ℃
	[110]:7.7 × 10-6/ ℃
	[111]:7.8 × 10-6/ ℃
Thermal Conductivity	14W/m/K(@25 ℃ )
Thermal Optical Coefficient (dn/dT)	7.3×10-6/ ℃
Thermal Shock Resistance	790W/m
Laser Properties
Laser Transition	4F3/2 --> 4I11/2
Laser Wavelength	1.064μm
Photon Energy	1.86×10-19J@1.064μm
Emission Linewidth	4.5A @1.064μm
Emission Cross Section	2.7~8.8×10-19cm-2
Fluorescence Lifetime	230μs
Spectral Properties
Index of Refraction	1.8197@1064nm

Standard specifications

Dopant concentration, at.%	Nd:1.1 ~ 1.3at%,Ce:0.05 ~ 0.1at%
orientation:	<111>within 5°
Flatness	< λ/10
Parallelism	≤ 10"
Perpendicularity	≤ 5 ′
Surface quality	10-5 per scratch-dig MIL-O-13830A
AR Coating Reflectivity	≤ 0.25%

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