Laser optics & coatings
Key characteristics
Decades of experience in the field of thin film deposition, modern machines and precise process control before, during and after deposition allows us to offer coatings of the highest performance and quality.
Substrate specifications
| Materials: | optical-grade fused silica or BK7 glass |
| Surface figure: | λ/10 at 633 nm |
| Wedge: | < 5 minutes of arc |
| Standard sizes: | Ø25.4 × 9.5 mm, Ø25.4 × 6.35 mm |
| Ø19 × 9.5 mm, Ø12.7 × 6.35 mm |
Other substrate materials, sizes, shapes, spherical (convex, concave), parallel (<10 seconds of arc), or wedged substrates are available upon request.
Coatings specifications
| Material: | electron-beam deposited hard dielectrics, ion-assisted deposition (IAD) available |
| Clear aperture: | 80% of diameter |
| Damage threshold: (at 1064 nm, 10 ns) |
30 J/cm2 high reflectivity mirrors |
| 15 J/cm2 AR coatings, partial reflectivity mirrors, graded reflectivity mirrors, beam splitters |
Coatings are designed to be used at normal or 45 degree incidence. Other angles of incidence are available upon request.
High reflectivity mirrors
| Reflectivity: |
> 99.7% VIS, NIR |
| > 99.5% UV, IR | |
| Central wavelengths: | from 250 nm to 6000 nm |
Anti-reflection coatings
| Working wavelengths: | from 190 nm to 6000 nm |
| Substrate materials: | fused silica, optical glass, filter glass, float glass, laser crystal elements, etc. |
| Reflectivity: |
< 0.2% V-type coating |
| < 0.5% W-type or broadband coating |
Partial reflectivity mirrors
Designed for any reflection level from 1% to 99% (tolerances ±0.3% to ±3% depending on the reflectivity level) and at any wavelength from 250 nm to 6000 nm with an appropriate AR coating on the second side.
Dichroic mirrors
Mirrors with reflection/transmission levels specified at two (or more) different wavelengths from 250 nm to 6000 nm with an appropriate AR coating on the second side.
Beam splitters
Designed to be used at 45 degree incidence for any reflection level from 1% to 99% (tolerances ±0.3% to ±3% depending on the reflectivity level) at any wavelength from 250 nm to 6000 nm with a specified polarization. Other angles of incidence are available upon request. Appropriate AR coating on the second side.
Rp/Rs ratio is about 0.5 for reflection/transmission level 50%/50% and the angle of incidence 45 degrees.
Dichroic beam splitters are available upon request.
Graded reflectivity laser mirrors
Optical filters and mirrors
Cut-off and bandpass filters, filters for light sources, interference colour filters, and metal and metal-dielectric mirrors are available upon request.
