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503 nm edge LaserMUX™ single-edge laser dichroic beamsplitter

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LaserMUX filters are designed to efficiently multiplex or demultiplex (combine or separate) laser beams at a 45° angle of incidence. These ultralow-autofluorescence filters are ideally suited for multi-laser fluorescence imaging and measurement applications such as laser microscopy and flow cytometry. This laser dichroic beamsplitter is optimized for reflecting laser beams up to 2.5 mm in diameter while minimizing RWE.

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 BandTavg > 95% 514.5 – 647.1 nm
Transmission Band, p-polTabs > 95% for transmitted laser wavelengths
Transmission Band, s-polTabs > 94% for transmitted laser wavelengths
Reflection BandRavg > 98% 473.0 – 491.0 nm
Reflection Band, p-polRabs > 96% for laser wavelengths
Reflection Band, s-polRabs > 99% for laser wavelengths
Laser Wavelength1064.2 nm
473 nm +5/-0
488 nm +3/-2
Transition Width4.80%
Special UseSeparate 532 nm (transmitted) from 1064 nm (reflected) with this filter

General Specifications
Angle of Incidence45 ° with a shift of 0.35%/° (40 – 50 °)
Cone Half-angle0 °
Transmitted Laser Wavelengths514.5 nm
515 nm
532 nm
543.5 nm
561.4 nm
568.2 nm
594.1 nm
632.8 nm
635 +7/-0 nm
647.1 nm
Filter Effective Index1.66 Understanding 'Effective Index of Refraction' neff
Optical Damage Rating1 J/cm² @ 532 nm (10 ns pulse width)
Flatness / RWE ClassificationLaser
Reflected Wavefront Error< 6λ P-V RWE @ 632.8

Physical Specifications (for standard parts - please contact us for custom sizes)
Mounted / UnmountedMounted
Size25 x 3.5 mm
Transverse Dimensions, Diameter25 mm
Transverse Tolerance, Mounted+ 0.0 / - 0.1 mm
Filter Thickness, Mounted3.5 mm
Filter Thickness Tolerance, Mounted± 0.1 mm
Clear Aperture≥ 22 mm
Surface Quality (Scratch-Dig)60-40
Substrate Thickness2.0 mm
Substrate TypeLow-autofluorescence optical quality glass
OrientationFor optimal filter performance, when using the filter as a:
• MUX: Arrow points toward outgoing transmitted & combined laser beams
• DEMUX: Arrow points toward incoming combined beams and outgoing reflected beam


  • Size: 25 x 3.5 mm


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Optical Density

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Semrock Spectral Plot Info

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