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Free keywords:
PHASE-MASK; SCANNING TECHNIQUE; OPTICAL-FIBER; LASER; WRITTEN; SPECTRA;
PULSESOptics;
Abstract:
The period of fiber Bragg gratings is adapted by shaping the wavefronts of ultrashort laser pulses applied in a phase mask inscription technique. A specially designed deformable mirror, based on a dielectric substrate to withstand high peak powers, is utilized to deform the wavefront. A shift of about 11 nm is demonstrated for a Bragg wavelength around 1550 nm. (c) 2017 Optical Society of America