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Laser Beam Expanders: Fixed and Variable Expansion

Thorlabs offers a wide range of Galilean type laser beam expanders for use in the UV, visible, and NIR spectral ranges. Our fixed-magnification, sliding-lens beam expanders with UV fused silica have either a broadband for 240 - 360 nm or narrowband AR coatings for 266, 355, 532, and 1064 nm. The VIS and NIR fixed-magnification, rotating-lens optical beam expander optics have broadband AR coatings for 400 - 650, 650 - 1050, and 1050 - 1620 nm. We also offer variable magnification beam expanders and reflective beam expanders.The AR coatings have a high damage threshold so that the laser beam expanders can be used with CW and pulsed laser sources. In addition, the large input and output apertures allow the optical beam expanders to be used to produce diffraction limited expanded (or reduced) beams for a wide range of input beams.

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