Femtosecond laser direct-write waveplates based on stress-induced birefringence

The use of femtosecond lasers to introduce controlled stress states has recently been demonstrated in silica glass. We use this technique, in combination with chemical etching, to generate and control stress-induced birefringence over a well-defined region of interest, demonstrating direct-write wave plates with precisely tailored retardance levels. This tailoring enables the fabrication of laser-written polarization optics that can be tuned to any wavelength for which silica is transparent, and with a clear aperture free of any laser modifications. Using this approach, we achieve sufficient retardance to act as a quarter-wave plate. The stress distribution within the clear aperture is analyzed and modeled, providing a generic template that can be used as a set of design rules for laser-machined polarization devices. (C) 2016 Optical Society of America


Published in:
Optics Express, 24, 24, 27239-27252
Year:
2016
Publisher:
Washington, Optical Soc Amer
ISSN:
1094-4087
Laboratories:




 Record created 2017-01-24, last modified 2018-09-13


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