Nd：YAG

YAG using the Czochralski technique for use in industrial,medical and scientific applications

Classification:

Detailed introduction

Cryslaser grows Nd:YAG using the Czochralski technique for use in industrial,medical and scientific applications.Cryslaser manufactures various finished laser rods with different sizes,slabs and wafers as well as supplying Nd:YAG blank or materials.

PRODUCT FEATURE

High gain

Low threshold

High efficiency

Low loss at 1.06um

Good thermal conductivity

High thermal shock characteristics

Specifications

Material	Nd:YAG
Concentration	0.1at%~2.5at%
Orientation	<111> or <100>±5°
Dimension	Diameter:1~50mm, Length:0.3~220mm (Customized available)
Dimension Tolerance	Φ:+0/-0.04mm,L:+0.5/-0mm
Perpendicularity	≤5′
Parallelism	≤10″
Chamfer	0.15±0.05mm
Clear Aperture	>95%
Scratch Quality	10/5(MIL-PRF-13830B)
Barrel Finish	Fine Ground, Polishing, Grooving
Flatness	≤λ/10@632.8nm
Wavefront Distortion	≤λ/10 per inch@632.8nm
Extinction Ratio	≥30dB
Coating	ARcoating:R<0.15%@1064nm,R<0.5%@808nm,R<0.15%@532nm
	PR coating :R=(10~90)%±2%@1064nm
	HR coating:R>99.8%@1064nm,R>99.8%@808nm
Damage Threshold	≥1GW/cm²@1064nm,10ns,10Hz

Optical properties
Laser Transition	⁴F_3/2→⁴I_11/2
Laser Wavelength	1064nm
Photon Energy	1.86×10^-19J@1064nm
Emission Line-width	4.5Å@1064nm
Emission Cross Section	2.7~8.8×10-19cm2@1at%Nd
Fluorescence Lifetime	230µs@1at%Nd
Absorption Wavelength of Diode Pumped	808nm
Pump Absorption Bandwidth	1nm
Main Pump Wavelength Range	400~850nm

Physical and Chemical Properties
Crystal Structure	Cubic
Melting Point	1970℃
Density	4.56±0.04g/cm³
Specific Heat	0.59J/g.cm³@0~20℃
Elastic Modulus	310GPa
Young’s Modulus	3.17×10⁴Kg/mm²
Mohs Hardness	8.5
Poisson’s Ratio	0.25
Thermal Expansion Coefficient	<111> orientation:7.8x10^-6/K@0~250℃
	<100> orientation:8.2x10^-6/K@0~250℃
	<110> orientation:7.7x10^-6/K@0~250℃
Thermal Conductivity	14W/m/K@20°C
Thermal Conductivity	10.5W/m/K@100°C
Thermal Optical Coefficient	7.3 x 10^-6/K
Refractive Index	1.82@1064nm
Stimulated Emission Cross Section(nm.cm-1)	2.8x10^-19cm2
Single Path Loss	0.003cm^-1@1064nm