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Eritrea Tm:YAG

Tm:YAG crystal is an excellent laser crystal for AlGaAs diode pumping, emitting 2μm eye-safe laser. It has superior optical and thermal properties, comes in various forms, and is widely used in medical, industrial, and meteorological fields.

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EritreaLaser Crystals

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Product Description

Tm:YAG(Tm³⁺:Y₃Al₅O₁₂) crystal is an excellent laser crystal for AlGaAs diode pumping, emitting 2μm eye-safe laser. It has superior optical and thermal properties, comes in various forms, and is widely used in medical, industrial, and meteorological fields.

PRODUCT FEATURE

Operates in 2μm eye-safe band with high quantum efficiency
High LD pumping efficiency and stable optical-thermal performance
Customizable in multiple forms with short cycle and controllable cost

Specifications
Material	Tm:YAG
Concentration	0.5~5at%
Orientation	<111>±5°
Dimension	Φ2~10mm, L:3~150mm
Dimension Tolerance	Φ+0.00/-0.05mm, L:±0.5mm
Barrel Finish	Precision Grinding, Polishing or Threading
Parallelism	≤10″
Perpendicularity	≤5′
Flatness	≤λ/8@632.8nm
Surface Quality	10/5
Chamfer	0.15±0.05mm
Wavefront Distortion	≤0.125λ/25mm @632.8nm
Coating	ARcoating:≤0.25% @2μm

Optical properties
Laser Transition	³F₄→³H₆
Laser Wavelength	1.87~2.16μm
Fluorescence Lifetime	11ms
Diode Pumping Bands	680nm, 785nm
Absorption Cross Section	7.5×10⁻²¹cm²
Emission Cross Section	2.9×10⁻²⁰cm²@2013nm
Refractive Index	1.83@632nm
Refractive Index Temperature Dependence	7.3×10⁻⁶/K

Physical and Chemical Properties
Crystal Structure	Cubic
Lattice Constant	12.01Å
Melting Point	1970℃
Mohs Hardness	8.5
Density	4.56±0.04g/cm³
Specific Heat	0.59J/g·℃
Elastic Modulus	310GPa
Poisson's Ratio	0.25~0.3
Thermal Expansion Coefficient	<100>8.2×10⁻⁶/K,
	<110>7.7×10⁻⁶/K,
	<111>7.8×10⁻⁶/K
Thermal Conductivity	14W/m/K@20℃, 10.5W/m/K@100℃
Thermo-Optic Coefficient	7.3×10⁻⁶/K