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Introduction
Er:YAG is an excellent
laser crystal which lasers at 2.94µm. It has wide applications
in medical laser systems, and others.
 Very high slope efficiency
Operates well at room temperature
Operate in a relatively eye-safe wavelength range
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)
Er:YAG's Specifications:
| Orientation: |
<111> or <100]> crystalline
within 5° |
| Wavefront distortion : |
l /8 per inch @ 633 nm |
| Extinction Ratio: |
>25dB |
| Dimension Tolerances |
Rods with diameter: ±0.025 mm ,
Length: ±0.5 mm |
| Surface quality: |
10/5 Scratch / Digper MIL-O-1380A
|
| Parallelism: |
< 10 arc seconds |
| Perpendicularity: |
< 5 arc minutes |
| Flatness: |
< l
/10 @ 633 nm |
| chamfer: |
<0.1 mm @ 45deg. |
| Barrel Finish: |
50-80 micro-inch (RMS) , |
| AR Coating Reflectivity |
< 0.25% |
Note: The other specification and dimension is available
too |
Laser Crystals