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577/742 nm BrightLine® dual-band bandpass filter

Part Number: FF01-577/742-25

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  • Your filter spectrum may differ slightly from the typical spectrum above, but is certified to meet the optical specifications noted below.
Optical Specifications
SpecificationValue
Transmission Band 1Tavg > 90% 555.5 – 598.5 nm
Center Wavelength 1577 nm
Guaranteed Minimum Bandwidth 143 nm
FWHM Bandwidth 1 (nominal)48.3 nm
Transmission Band 2Tavg > 90% 711 – 773 nm
Center Wavelength 2742 nm
Guaranteed Minimum Bandwidth 262 nm
FWHM Bandwidth 2 (nominal)69.8 nm
Blocking Band 1ODavg > 6 200 – 540 nm
Blocking Band 2ODavg > 6 614.5 – 694 nm
Blocking Band 3ODavg > 6 790.5 – 900 nm

General Filter Specifications
SpecificationValue
Angle of Incidence0 ± 5 degrees
Cone Half-angle7 degrees
Optical Damage RatingTesting has proven to show no signs of degradation when exposed to at least 6.0 W of power from an unfiltered xenon arc lamp over a 25 mm diameter (corresponding to 1.2 W/cm2) for over 500 hrs.
Filter Effective Index1.95 Understanding ‘Effective Index of Refraction’ neff

Physical Filter Specifications (applies to standard sized parts; contact us regarding other sizes)
SpecificationValue
Transverse Dimensions (Diameter)25 mm
Transverse Tolerance (mounted)+ 0.0 / – 0.1 mm
Filter Thickness (Mounted)3.5 mm
Filter Thickness Tolerance (Mounted)± 0.1 mm
Clear Aperture≥ 22 mm
Scratch-Dig60-40
Substrate Thickness (unmounted)1.05 mm
Substrate Thickness Tolerance (unmounted)± 0.05 mm
OrientationArrow on ring indicates preferred direction of propagation of light

Tech Note
TopicDescription
Cleaning Optical FiltersInstructions for cleaning hard coated optical filters
Filter ReliabilityCompares the performance and reliability of hard coated filters to traditional soft-coated filters and provides information about the testing standards for Semrock filters
Working with Optical DensityTables to describe the relationship between OD and transmission with tips for quickly calculating OD
Multiband Filter Set TerminologyCompares benefits and drawbacks of full multiband, pinkel and sedat filter sets

577/742 FF01-577/742

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