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989 nm edge BrightLine® multiphoton short-pass dichroic beamsplitter

Part Number: FF989-SDi01-25x36

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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.
Semrock Optical Filter: FF989-SDi01  FF989  SDi01
989 nm edge BrightLine® multiphoton short-pass dichroic beamsplitter
Semrock offers a wide range of dichroic beamsplitters optimized for pulsed lasers used in multiphoton applications. These multiphoton dichroics have low GDD that helps minimize temporal pulse broadening of reflected laser beams while exhibiting steep edges with very high and flat reflection and transmission bands. This laser dichroic beamsplitter is optimized for reflecting laser beams up to 2.5 mm in diameter while minimizing RWE.

These are ideal solutions for femtosecond pulsed lasers such as Ti:Sapphire (& OPO coupled), neodymium- and ytterbium-doped fiber and glass lasers, enabling deep tissue imaging with improved constrast.
Part NumberSizePrice1Stock StatusQuantity
FF989-SDi01-25x3625.2 mm x 35.6 mm x 1.1 mm
(unmounted)
$565In StockAdd To Cart


This part is not available for custom sizing.


1) US domestic pricing only. If you are ordering from outside the US, please contact your nearest regional distributor for the correct list price.
Optical Specifications
SpecificationValue
Reflection Band 1 (avg-pol)Ravg > 95% 1015 – 1300 nm
Reflection Band 2 (avg-pol)Ravg > 95% 400 – 748.5 nm
Edge Wavelength 1989 nm
Transmission Band 1Tavg > 90% 789 – 963 nm

General Filter Specifications
SpecificationValue
Angle of Incidence45 ± 1.5 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.
SteepnessStandard
Filter Effective Index1.77 Understanding ‘Effective Index of Refraction’ neff
Group Delay DispersionGDD Details
Flatness / RWE ClassificationLaser
Reflected Wavefront Error< 6λ P-V RWE @ 632.8 nm

Physical Filter Specifications (applies to standard sized parts; contact us regarding other sizes)
SpecificationValue
Transverse Dimensions (L x W)25.2 mm x 35.6 mm
Transverse Tolerance± 0.1 mm
Filter Thickness (unmounted)1.05 mm
Filter Thickness Tolerance (unmounted)± 0.05 mm
Clear Aperture≥ 80% (elliptical)
Scratch-Dig60-40
Substrate Thickness (unmounted)1.05 mm
Substrate Thickness Tolerance (unmounted)± 0.05 mm
OrientationReflective surface marked with part number - Orient in direction of incoming 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
Laser Damage ThresholdProvides information for calculating laser damage threshold for pulsed and continuous wave lasers
BrightLine Multiphoton Fluorescence FiltersDescribes how multiphoton microscopy works and how optical filters for multiphoton fluorescence differ from traditional fluorescence filters.
Journal Article
TopicDescription
Optical Filters for Multiphoton MicroscopyCraig Hodgson, PhD, and Turan Erdogan, PhD, Semrock, Inc., BioPhotonics, November 2006
Describes how multiphoton microscopy works, several current applications and how optical filters for multiphoton fluorescence differ from traditional fluorescence filters
White Paper
TopicDescription
Flatness of Dichroic Beamsplitters Affects Focus and Image QualityAnalysis of how the radius of curvature of a dichroic filter affects focal plane shift, spot size and image fidelity in fluorescence microscopy.
Application
TopicDescription
Multiphoton MicroscopyAn overview of multiphoton microscopy, including solutions from Semrock and additional learning resources.

989 FF989 FF989-SDi01 FF989-SDi01-25x36

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