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  • Excimer Laser for FBG Writing
Feb 2012
Coherent Inc.Request Info
SANTA CLARA, Calif., Feb. 17, 2012 — The new BraggStar M from Coherent Inc. is an excimer laser that delivers high pulse energy and spatial coherence for fiber Bragg grating (FBG) writing.

High pulse energy is a critical advantage in some FBG writing applications, and high spatial coherence is always beneficial because it creates FBGs with higher contrast and/or longer length. Because it can be operated at repetition rates of up to 100 Hz, the BraggStar M supports high-throughput production.

It uses a coherence-enhanced optical design at the dominant FBG-writing wavelength of 248 nm, resulting in higher spatial coherence compared to conventional, broad-use excimer lasers, the company said. Featuring a compact design and ease of operation, it is based on the field-proven COMPex platform that is designed for high reliability.

The laser creates FBGs for reflectors in fiber lasers, reference wavelength stabilization in wavelength division multiplexing telecommunications, and fiber sensing applications.


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excimer laser
A rare-gas halide or rare-gas metal vapor laser emitting in the ultraviolet (126 to 558 nm) that operates on electronic transitions of molecules, up to that point diatomic, whose ground state is essentially repulsive. Excitation may be by E-beam or electric discharge. Lasing gases include ArCl, ArF, KrCl, KrF, XeCl and XeF.
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