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- Versachrome - Model 378/16 nm - Tunable ...
Versachrome - Model 378/16 nm -Tunable Bandpass Filter
VersaChrome filters do what no thin-film filter has done before – offer tunability over a very wide range of wavelengths by adjusting the angle of incidence with essentially no change in spectral performance. They combine the spectral characteristics and two-dimensional imaging performance of a thin-film filter with the wavelength-tuning flexibility of a diffraction grating.
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- General Filter Specifications
- Specification : Value
- Laser Wavelength 1 : 248.6 nm
- Angle of Incidence : 0 ± 2 degrees
- Cone Half-angle : 5 degrees
- Optical Damage Rating : 0.5 J/cm2 @ 266 nm (10 ns pulse width), 1 J/cm2 @ 532 nm (10 ns pulse width)
- Effective Index : 2.24
- Transmission Band 1 : Tavg > 80%
- Center Wavelength 1 : 378 nm (minimum)
- Guaranteed Minimum Bandwidth 1 : 16 nm
- FWHM Bandwidth 1 (nominal) : 20 nm
- Blocking Band 1 : ODavg > 6 275 – 1100 nm
- Cuton Transition Width : 2% (from blocking to transmission)
- Cutoff Transition Width : 2% (from transmission to blocking)
- Transmission Band 1 (60 deg) : Tavg > 60%
- Center Wavelength 1 (60 deg) : 340 nm (minimum)
- Guaranteed Minimum Bandwidth 1 (60 deg) : 16 nm
- FWHM Bandwidth 1 (nominal) (60 deg) : 20 nm
- Blocking Band 1 (60 deg) : ODavg > 5 275 – 925 nm
- Cuton Transition Width (60 deg) : 2.5% (from blocking to transmission)
- Cutoff Transition Width (60 deg) : 2% (from transmission to blocking)
- Angle of Incidence : 0 – 60 degrees
- Cone Half-angle : 0 degrees
- Optical Damage Rating : Not tested
- Effective Index : 1.88
- Transverse Dimensions (L x W) : 25.2 mm x 35.6 mm
- Transverse Tolerance : ± 0.1 mm
- Filter Thickness (unmounted) : 2.0 mm
- Filter Thickness Tolerance (unmounted) : ± 0.1 mm
- Clear Aperture : ≥ 80% (elliptical)
- Scratch-Dig : 60-40
- Substrate Thickness (unmounted) : 2.0 mm
- Substrate Thickness Tolerance (unmounted) : ± 0.1 mm
- Orientation : Reflective surface marked with part number - Orient in direction of incoming light