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Product Catalog

Dichroic Beamsplitters and Coated Windows

Dichroic Beamsplitters and Coated Windows:

U.S. Laser beamsplitters are generally used with our model N1001 beam delivery systems to reflect the laser wavelength, while allowing sufficient visible light to be transmitted for CCTV viewing. Beamsplitters are fabricated using u.v. grade fused silica substrates, which are polished to > 1/4 wave flatness. Substrates are then highly damage resistant multi-layer dielectrically coated for the appropriate reflectivity and wavelength. Unless otherwise specified, substrates are 2 1/8" diameter x 5/16" thick, and are coated for 45o incidence angle, and random polarization.  

When used to describe our beamsplitters, the following abbreviations and definitions apply:

  • Visible: 450-650 nm
  • HR: high reflectivity (>99.9 % reflectivity)
  • HT: high transmission (>~70 % transmission)
  • A/R: Anti-reflective (<.5 % reflection)

Related Products: Beam Delivery Systems, Dichroic Mirror Mounts, Beam Separators
Part No. Optical Properties:
N3460-1 side 1: HR @ 1064 nm, HT visible, side 2: A/R Visible
N3460-2 same as above, but 3" diameter 
N3460-3 same as above, but 1.625" diameter x .25" thick
N3461 side 1: HR @ 1064 nm & 532 nm, HT remaining Visible, side 2: A/R Visible
N3461-1 same as above, but 1.625" diameter x .25" thick (uncoated rear surface)
N3462 side 1: HR @ 355 nm, HT remaining Visible, side 2: A/R Visible
N3463 side 1: HR @ 266 nm, HT remaining visible, side 2: A/R Visible
N3464 side 1: HR @ 488-514 nm, HT remaining Visible, side 2: A/R Visible
N3465 side 1: HR @ 1320 nm, HT remaining visible, side 2: A/R Visible
N3466 side 1: A/R @ 1064 nm, side 2: A/R @ 1064 nm
N3466-1 same as above, but 1.625" diameter x .25" thick
N3467 side 1: A/R @ 1064 nm, side 2: A/R @ 1064 nm (normal incidence)
N3467-1 same as above, but 3" diameter
N3468 side 1: A/R @ 1064 nm & 532 nm, side 2 A/R @ 1064 nm & 532 nm (normal incidence)
N3469 side 1: 50 %R +/- 5% @ 1064 nm, side 2: A/R @ 1064 nm
N3470 side 1: 50%R +/- 5% @ 1064nm & 532 nm, side 2: A/R @ 1064 nm & 532 nm
N3471 side 1: uncoated, side 2: uncoated
N3471-1 same as above, but 1.625" diameter x .25" thick
N3472 side 1: HR @ 266 nm, HT 532 nm, side 2: A/R 532 nm (1" diameter x 1/8" thick beam separator dichroic)
N3473 side 1: HR @ 355 nm, HT 532 nm, side 2: A/R 532 nm (1" diameter x 1/8" thick beam separator dichroic)
N3474 side 1: HR @ 532 nm, HT 1064 nm, side 2: A/R 1064 nm (1" diameter x 1/8" thick beam separator dichroic)
N3475 a silvered first surface reflector, used in the U.S. Laser viewing & focusing optics, 2.0" dia. X .35" thick, uncoated fine ground rear surface
N3476 a 50% visible beamsplitter , used in the U.S. Laser dual camera viewing and focusing optics, 2.0" dia. X .25" thick, A/R Visible rear surface