Variable reflectivity mirrors
Main features
- Mirror substrates fabricated from high-quality UV grade fused silica
- Standard substrate dimensions are ø25,4 x 5 mm
- Central reflectance from 15% to 35% at 1064 nm wavelength
- Custom reflectance profiles, substrates material, and dimensions are available upon request
Application examples
- Laser cavity output coupler for unstable laser resonator
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- Description
- Drawing
- Standard specifications
4Lasers variable reflectivity mirrors provide a circularly symmetric reflectance profile according to the super-Gaussian function with an order of 2. These mirrors are favorable in high-power unstable laser resonators for their wide filling of the active medium and weak diffraction on the hard-edge aperture. Therefore, super-Gaussian variable reflectivity mirrors contribute to better near- and far-field beam quality. It is worth mentioning that variable reflectivity mirrors can be designed to have various reflectance profiles, such as linear, parabolic, Gaussian.
| Variable reflectivity mirrors | |
|---|---|
| Radius w0 | 2 mm |
| Gaussian order n | 2 |
| Substrate material | UV grade fused silica |
| Clear aperture | >85% |
| Face dimensions tolerance | +0,0/-0,15 mm |
| Thickness tolerance | ±0,25 mm |
| Parallelism error | <30 arcsec |
| Protective chamfers | <0,35 mm at 45° |
| Surface quality | 20-10 S-D |
| Surface flatness | <λ/8@632,8 nm |
| Rear surface | Anti-reflective coated |
| Laser-induced damage threshold | >6 J/cm2@1064 nm, 10 ns |
Order your item
Material
Dimensions
Wavelength
Central reflectivity
SKU
PRICE
QUANTITY
UVFS
⌀25,4x5 mm
1064 nm
15% ± 1%
6539
Request
UVFS
⌀25,4x5 mm
1064 nm
20% ± 1%
6540
Request
UVFS
⌀25,4x5 mm
1064 nm
25% ± 1%
6541
Request
UVFS
⌀25,4x5 mm
1064 nm
30% ± 1%
6542
Request
UVFS
⌀25,4x5 mm
1064 nm
35% ± 1%
6543
Request
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