Optical windows are used to allow optical radiation to pass from one environment to another without allowing other elements of these environ-ments to mix. And it does not change the wavelength distribution of the beam, the transmitted wavefront, nor does it scatter any of the light out of the beam.
When selecting windows you should consider materials, transmission, scattering, wavefront distortion, parallelism and resistance to certain envi-ronment. Windows may also be used as coating substrates for use in a wide range of applications.
Optical windows from a wide selection of materials for VUV-UV-Visible-NIR-IR-FIR are offered to meet various scientifc instrument applications include high energy laser optical windows, VUV windows, IR windows, high pressure high temperature chamber view port and simple white foat glass windows.
Windows materials we can supply are listed below
Material | Refractive Index | Transmission Range(um) | Thermal Expansion coeficient(10-6 | Density (g/cm3) |
BK7 | 1 .5164@588nm | 330-2100nm | 7.5 | 2 .52 |
Fused silica | 1 .4858@308nm | 185-2500nm | 0 .58 | 2 .2 |
Borof oat | 1 .4713@587.6nm | 330-2100nm | 3 .3x10 | 2 .2 |
sapphire | 1 .755@1000nm | 180-4500nm | 8 .4 | 3 .98 |
caF2 | 1 .399@5000nm | 170-7800nm | 18 .85 | 3 . 18 |
silicon | 3 .426@5000nm | 1200-7000nm | 2.55 | 2 .33 |
Germanium | 4.003@10000nm | 2000- 14000nm | 5.5 | 5.33 |
Znse | 4.016@5000nm | 2000-12000nm | 7.8 | 5.27 |
