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Improves beam shape and quality |
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Variable/locally defined reflection |
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Highest available central reflection value Rr (max) - 50% |
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Custom design (substrate shape, wedge, AR coating) available |
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In order to have better beam quality, i.e. in non-stable resonators,
variable reflection mirrors - variable reflectivity mirrors can be
used. High intensity of the laser beam requires use of components
with a high damage threshold. Dielectric coatings are best suited
to meet these requirements. Standa offers variable reflectivity
mirrors with dielectric coating, designed at wavelengths in a
range from 266 to 2500 nm.
Standard Specifications
| Material | UVFS |
| Diameter Tolerance | +0.0, -0.1 mm |
| Thickness Tolerance | ±0.1 mm |
| Flatness | λ/8 @ 632.8 mm |
| Surface Quality | 20-10 scratch & dig |
| Paralellism error | <10 arcsec |
| Clear Aperture | >90% |
Variable Reflectivity Mirrors
| Diameter, mm | Wavelength*, nm | Reflection (center)R0, % | Radius wm, mm | Gaussian order k | Ordering Code |
| 25.4 | 1064 | 15 ± 0.5 | 2 | 2 | 14VRM-1-15-2-2-2 |
| 20 ± 0.5 | 14VRM-1-20-2-2-2 |
| 25 ± 0.5 | 14VRM-1-25-2-2-2 |
| 30 ± 0.5 | 14VRM-1-30-2-2-2 |
| 35 ± 0.5 | 14VRM-1-35-2-2-2 |
*Custom wavelengths available.
Ordering
* Use the comments field upon checking out to describe desired characteristics.
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