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| Information |
| Name： | Yb:YAG |
| Categories： | Crystals >> Laser Crystals |
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| Clicks： | 124 |
| Date： | 2010-02-20 19:26:17 |
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Yb:YAG is one of the most promising laser-active materials and more suitable for diode-pumping than the traditional Nd-doped systems. Compared with the commonly used Nd:YAG crsytal , Yb:YAG crystal has a much larger absorption bandwidth to reduce thermal management requirements for diode lasers, a longer upper-laser level lifetime, three to four times lower thermal loading per unit pump power. Yb:YAG crystal is expected to replace Nd:YAG crystal for high power diode-pumped lasers and other potential applications.
- Very low fractional heating, less than11%
- Very high slope efficiency
- Broad absorption bands, about m 8nm@ 940nm
- No excited-state absorption or up-conversion
- Conveniently pumped by reliable InGaAs diodes
- at 940nm(or 970nm) High thermal conductivity
- High optical quality
Basic Properties:
Please view Laser crysals physical Properities (dpf format)
The Sellmeier equations (l in µm for YAG):
n ^2 = 2.08745 + 1.2081 l ^2 /(l^ 2 - 0.02119 )+ 17.2049 l ^2 /(l ^2 - 1404.45 )
Optical and Spectral Properties
Please view Laser crysals optical and Spectral Properities (dpf format)
Yb:YAG's Specifications:
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Orientation:
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<111> or <100]> crystalline within 5°
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Wavefront distortion :
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l /8 per inch @ 633 nm
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Extinction Ratio:
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>25dB
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Dimension Tolerances
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Rods with diameter: ±0.025 mm , Length: ±0.5 mm
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Surface quality:
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10/5 Scratch / Digper MIL-O-1380A
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Parallelism:
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< 10 arc seconds
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Perpendicularity:
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< 5 arc minutes
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Flatness:
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< l /10 @ 633 nm
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chamfer:
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<0.1 mm @ 45deg.
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Barrel Finish:
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50-80 micro-inch (RMS) ,
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AR Coating Reflectivity
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< 0.25%
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Note: The other specification and dimension is available too |
