BOULDER, Colo., April 26, 2011 — Precision Photonics Corp. has announced a low-group-velocity dispersion (GVD), high-energy polarizer for broadband femtosecond applications. It uses proprietary advanced ion-beam-sputtering coatings and a Telcordia-qualified, chemically activated direct-bonding, epoxy-free technique and low-loss optical components.
The polarizer maintains a >2000:1 extinction ratio from 700 to 1100 nm without sacrificing the overall transmission (Tp >96%) or damage threshold (initial testing to >10 J/cm2
). The fused silica beamsplitters are offered with a standard ½ × ½-in. input face, and custom prism polarizers are available in sizes from 1 to >20 mm.
Applications include regenerative amplifiers and optical isolators for ultrafast lasers, optical coherence tomography, microscopy and imaging.
The shape of the prisms allows ultrabroadband pulses to travel in and out of the polarizer without refraction, avoiding spatial dispersion of the broadband pulse (prism effect). The multidimensional performance of the prism polarizer is not possible with typical cube beamsplitters, calcite prism polarizers or thin-film plate polarizers, according to the company.
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