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Proceedings Paper

Astigmatism compensation for waveguide inscription in optical fiber by femtosecond lasers
Author(s): D. Pallarés Aldeiturriaga; P. Roldán-Varona; L. Rodriguez-Cobo; J. M. Lopez-Higuera
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Paper Abstract

The cylindrical geometry of optical fibers produces an astigmatic distortion in a wavefront focused within it. In the case of femtosecond lasers, this produces a fluence loss that decreases its processing performance. In this work, the phase change produced by an astigmatic femtosecond laser beam (direct exposition to the) and a corrected beam (applying a simple adaptive optics process) is compared. The astigmatic correction decreases the modification threshold by approximately a magnitude order and changes the sign of the refractive index change at low pulse energies.

Paper Details

Date Published: 28 August 2019
PDF: 4 pages
Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111992T (28 August 2019); doi: 10.1117/12.2539835
Show Author Affiliations
D. Pallarés Aldeiturriaga, Univ. de Cantabria (Spain)
CIBER-bbn, Instituto de Salud Carlos III (Spain)
P. Roldán-Varona, Univ. de Cantabria (Spain)
L. Rodriguez-Cobo, CIBER-bbn, Instituto de Salud Carlos III (Spain)
J. M. Lopez-Higuera, Univ. de Cantabria (Spain)
CIBER-bbn, Institituo de Salud Carlos III (Spain)
Instituto de Investigación Sanitaria Valdecilla (Spain)

Published in SPIE Proceedings Vol. 11199:
Seventh European Workshop on Optical Fibre Sensors
Kyriacos Kalli; Sinead O. O'Keeffe; Gilberto Brambilla, Editor(s)

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