| Laser Parameters | |
| The cross-section for stimulated emission (10 -20 cm² ) | 0.8 |
| Fluorescent lifetime (ms) | 8.3-8.6 |
| Center lasing wavelength (nm) | 1535 |
| Optical Parameters | |
| Refractive index （ 1535nm ） | 1.56 |
| Refractive index (d 589.3nm) | 1.53 |
| Abbe value | 66 |
| dn/dT (10 -6 /ºC) (20~100ºC) | -1.72 |
| Thermal Parameters | |
| Transformation temp. (ºC) | 480 |
| Softening temp. (ºC) | 520 |
| Thermal conductivity (25ºC) (W/m. K) | 0.75 |
| Coeff. of linear thermal expansion (10 -7 /K) | 60 |
| Thermal Coeff. Of optical path length(10 -6/K) | 2.9 |
| Other Parameters | |
| Density (g/cm³ ) | 3 |
| Chemical durability (weigh loss rate at 100ºC distilled water) (μg/hr.cm² ) | 1.532 |
| Polishing Specifications | |
| Orientation Tolerance | 0.5º |
| Thickness/Diameter Tolerance | ±0.05mm |
| Surface Flatness | ＜λ/8@632nm |
| Wavefront Distortion | ＜λ/4@632nm |
| Surface Quality | 10/5 |
| Parallel | 10" |
| Perpendicular | 15′ |
| Clear Aperture | >90% |
| Chamfer | <0.1x45º |
| Maximum dimensions | Dia.(3-12.7) (3-150)mm² |
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