Tm:YAG(Thulium-doped yttrium aluminum garnet) – Laser Crystal – Gain Medium – Customized Products

Product ID: 6637


$100

Tm:YAG(Thulium-doped yttrium aluminum garnet) – Laser Crystal – Gain Medium – Customized Products
Tm: YAG operating on the 3H4 –3H6 transition in the 0.82 μm wavelength range. It can be pumped with efficient diode lasers in the 0.78 – 0.8 μm wavelength range. The transition has a small quantum defect for low thermal dissipation. The upper state lifetimes can be long, on the order of a millisecond for good energy storage. It also has sufficient gain bandwidth to support sub-ps-long pulses depending on the host material and temperature of operation. Compared with the single-crystal material, the transparent ceramic materials combine the advantages of single crystals and glasses. The transparent ceramic materials are fabricated by solid-state reaction and vacuum sintering. So, they not only possess good optical and thermal properties as fine as single crystals but also can be fabricated with large size, high concentration. Furthermore, they also have other superiorities, such as a short fabrication period, less cost, and multifunctional samples.

Note:
$100 is a deposit, not the final price of the product. Please contact us for price if needed.

Features
High quantum efficiency
High efficiency with LD pump
Long upper state lifetime
Sufficient gain bandwidth
Small quantum defect
High damage threshold

Material Specifications

Tm Concentration Tolerance(atm%) Tm:0.5~5at%
Orientation [111],<5º
Parallelism ≤10″
Vertical ≤5′
Surface Quality 10-5 (MIL-O-13830A)
Wavefront Distortion ≤ 0.125λ/25 mm @632.8nm
Surface Flatness λ/8@632nm
Clear Aperture >95%
Chamfering  0.15±0.05mm
Size D: 2~10mm,L: 3~150mm
Coating AR: ≤0.25% @2μm

 

Physical and Chemical Properties

Crystal Structure Cubic Crystal System
Lattice Constant 12.01 Å
Density 4.56±0.04g/cm3
Melting Point 1970℃
Thermal Conductivity/ W / m / K @ 20℃ 14W/m/K@20℃; 10.5W/m/K@100℃
Specific Heat(J/g.cm3@0-20℃) 0.59
Thermal-optical Coefficient(dn / dT) 7.3×10-6/K
Thermal Expansion  [100]: 8.2×10-6/K@0~250℃
 [110]: 7.7×10-6/K@0~250℃
 [111]: 7.8×10-6/K@0~250℃
Mohs Hardness 8.5
Young’s Modulus 3.17×104Kg/mm2
Shear Modulus 310GPa
Extinction Ratio ≥ 25dB @632.8nm
Tensile Strength/ Gpa 0.13~0.26
Solubility Insoluble in water, slightly soluble in common acid
Poisson Ratio 0.25
Thermal Shock Resistance 790W/m

 

Optical and Spectral Properties

Laser Transition 3F43H6
Laser Wavelength 1.87~2.16μm
Temperature Dependence of Refractive Index 7.3 10-6/K
Absorption Cross Section 7.5×10-21cm2
Diode Pump Band 785nm, 680nm
Emission Cross Section@ 2013nm 2.9×10-20 cm2
Fluorescence Lifetime  11ms
Refractive Index@ 632nm 1.83
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