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Er:YAG |
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 Product Information
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Advantage:
Very high slope efficiency
Operates well at room temperature
Operate in a relatively eye-safe wavelength range
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| Basic Properties: |
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| Crystal Structure |
Cubic |
| Lattice Parameters |
12.01 Å |
| Melting Point |
1970° |
| Moh Hardness |
8.5 |
| Density |
4.56?.04g/cm 3 |
| Specific Heat (0-20) |
0.59J/g.cm 3 |
| Modulus of Elasticity |
310GPa |
| Young's Modulus |
3.17X10 4 Kg/mm 2 |
| Poisson Ratio |
0.3(est.) |
| Tensile Strength |
0.13~0.26GPa |
Optical and Spectral Properties: |
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| Dopant concentration |
Er: ~50 at% |
| Laser Transition Transition |
4 I 11/2 to 4 I 13/2 to 4 I 13/2 |
| Laser Wavelength |
2940nm |
| Photon Energy |
6.75?0 -20 J(@2940nm) |
| Emission Cross Section |
3?0 -20 cm 2 |
| Index of Refraction |
1.79 @2940nm |
| Pump Bands |
600~800 nm |
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| Specifications: |
| Orientation: |
<111> or <100]> crystalline within 5?SPAN style="mso-spacerun: yes"> |
| Wavefront distortion : |
?/8 per inch @ 633 nm |
| Extinction Ratio: |
>25dB |
| Dimension Tolerances |
Rods with diameter: ?.025 mm , Length: ?.5 mm |
| Surface quality: |
10/5 Scratch / Digper MIL-O-1380A |
| Parallelism: |
< 10 arc seconds |
| Perpendicularity: |
< 5 arc minutes |
| Flatness: |
<?/10 @ 633 nm |
| chamfer: |
<0.1 mm @ 45deg. |
| Barrel Finish: |
ground or polished |
| AR Coating Reflectivity |
R< 0.25% |
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Other specifications are available as the requirements of customers. |
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