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laser crystal
optical crystal
Yb:YAG
The Ytterbium-doped Yttrium Aluminum Garnet crystal (Yb:Y3Al5O12, Yb:YAG) is one of the most promising solid laser working substances. Compared with the traditional Nd-doped system, it is more suitabl..
Product description
The Ytterbium-doped Yttrium Aluminum Garnet crystal (Yb:Y3Al5O12, Yb:YAG) is one of the most promising solid laser working substances. Compared with the traditional Nd-doped system, it is more suitable for diode pumping. Compared with the commonly used Nd:YAG crystal, the Yb:YAG crystal has a wider absorption bandwidth, which can reduce the temperature management requirements in the use of diode lasers. It also has a longer laser upper energy level lifetime, and the thermal load per unit of pump power is 3-4 times lower. At 1030 nm, the Yb:YAG crystal can well replace the Nd:YAG crystal used at 1064 nm, and its second harmonic at 515 nm can replace the Ar ion laser (which is larger in size) emitting at a wavelength of 514 nm.
Product Introduction
- Extremely low local overheating (< 11%)
- High slope efficiency
- Wide absorption band, about 8 nm @ 940 nm
- No excited state absorption or up-conversion
- Can be pumped by InGaAs diodes at 940 nm (or 970 nm)
- High thermal conductivity and high mechanical strength
- Excellent optical quality
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Energy Level Transition
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2F5/2→2F7/2
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Laser Wavelength
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1030 nm
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Photon Energy
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1.93×10-19 J @ 1030 nm
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Emission Spectrum Width
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9 nm
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Emission Cross-Section
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2.0×10-20 cm2
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Fluorescence Lifetime
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1.2 ms
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Diode Pumping Band
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940 nm or 970 nm
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Pump Absorption Bandwidth
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8 nm
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Refractive Index
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1.82
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Thermo-Optic Coefficient
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9×10-6 /℃
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Loss Coefficient
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0.003 cm-1
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Doping Concentration
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Yb: 0.5~20 at.%
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Size
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Diameter: 2~20 mm, Length: 5~150 mm
Customized according to customer requirements
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Size Tolerance
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Diameter Tolerance: ±0.1 mm Length Tolerance: ±0.5 mm
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Surface Finish
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10/5, Refer to MIL-PRF-13830B Standard
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Transmitted Wavefront Distortion
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≤λ/8 @ 633 nm
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Flatness
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λ/8 @ 633 nm
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Parallelism
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20″
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Perpendicularity
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≤15′
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Extinction Ratio
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≥28 dB
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Rod Surface Treatment
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Matte Processing: 400＃ Sand
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Chamfer
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≤0.2 mm×45°
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Anti-reflection Coating
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AR-1030/940 nm, R < 0.2% @ 1030 nm, R < 0.5% @ 940 nm
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Single-pass Loss
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< 3×10-3 cm-1
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