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Lasers & Sources

Dichroic beamsplitter

Semrock Inc. has launched its new line of LaserMUX™ optical filters, designed to efficiently combine or separate multiple laser beams. These new laser dichroic beam combiners have been optimized to multiplex (MUX) sixteen popular laser lines, and can also be used in reverse to demultiplex (DEMUX). The ultralow-autofluorescence filters are ideally suited for OEM multi-laser fluorescence imaging and measurement applications including laser microscopy and flow cytometry, as well as for myriad end-user applications in a laboratory environment.

LaserMUX dichroics are designed for the most popular fluorescence excitation lasers. The initial product launch includes six different filters for the nominal 405 nm, 440 nm, 488 nm, 514 nm, 561 nm, and 635 nm wavelengths. These filters are designed for flexibility; for example the 635, 561 and 514 nm filters can be used to MUX together either 514.5 or 532 nm, and either 561.4 or 594.1 nm, and either 632.8 or 647.1 nm, and either 671 or 785 nm laser wavelengths simultaneously. The filters are used at 45 degrees incidence while maintaining a high degree of polarization insensitivity. And the flatness ensures that there is less than one Rayleigh range of focal shift across a 2.5 mm beam diameter.