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704/13 nm VersaChrome® tunable bandpass filter

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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.

Note on spectral plots:
In the past, each shipment has included a spectral plot for every filter and every lot code in the shipment. In an effort to be more eco-friendly, we will no longer be including these plots with each shipment. If you require spectral plot data, please see here for more information.

Optical Specifications
Transmission Band Tavg > 90%
Transmission Band, @ 60 deg Tavg > 85%
Transmission Wavelength 703.8 nm (minimum)
Transmission Wavelength Range 697.3 – 710.3 nm
Transmission Wavelength Range, @ 60 deg 621.2 – 634.2 nm
Transmission Wavelength, @ 60 deg 627.7 (maximum) nm
FWHM Bandwidth 20 nm
Blocking Band ODavg > 6 275 – 1100 nm
Blocking Band, @ 60 deg ODavg > 6 275 – 925 nm
Cutoff Transition Width 3% (from transmission to blocking)
Cutoff Transition Width, @ 60 deg 2.5% (from transmission to blocking)
Cuton Transition Width 2% (from blocking to transmission)
Cuton Transition Width, @ 60 deg 3% (from blocking to transmission)
General Specifications
Angle of Incidence 0 – 60 °
Cone Half-angle 0 °
Filter Effective Index 1.82 Understanding ‘Effective Index of Refraction’ neff
Optical Damage Rating Not tested
Physical Specifications (for standard parts – please contact us for custom sizes)
Mounted / Unmounted Unmounted
Shape Rectangular
Size 25.2 x 35.6 x 2.0 mm
Transverse Dimensions, LxW 25.2 mm x 35.6 mm
Transverse Tolerance, Mounted ± 0.1 mm
Filter Thickness, Unmounted 2.0 mm
Filter Thickness Tolerance, Unmounted ± 0.1 mm
Clear Aperture ≥ 80% (elliptical)
Surface Quality (Scratch-Dig) 60-40
Substrate Thickness 2.0 mm
Substrate Type Low-autofluorescence optical quality glass
Orientation Reflective surface marked with part number – Orient in direction of incoming light


  • Size: 25.2 x 35.6 x 2.0 mm


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Optical Density

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Semrock Spectral Plot Info

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