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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 10 — Apr. 1, 2010
  • pp: 1938–1950

Inscription and characterization of waveguides written into borosilicate glass by a high-repetition-rate femtosecond laser at 800 nm

Thomas Allsop, Mykhaylo Dubov, Vladimir Mezentsev, and Ian Bennion  »View Author Affiliations


Applied Optics, Vol. 49, Issue 10, pp. 1938-1950 (2010)
http://dx.doi.org/10.1364/AO.49.001938


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Abstract

A series of waveguides was inscribed in a borosilicate glass (BK7) by an 11 MHz repetition rate femtosecond laser operating with pulse energies from 16 to 30 nJ and focused at various depths within the bulk material. The index modification was measured using a quantitative phase microscopy technique that revealed central index changes ranging from 5 × 10 3 to 10 2 , leading to waveguides that exhibited propagation losses of 0.2 dB / cm at a wavelength of 633 nm and 0.6 dB / cm at a wavelength of 1550 nm with efficient mode matching, less than 0.2 dB , to standard optical fibers. Analysis of the experimental data shows that, for a given inscription energy, the index modification has a strong dependence on inscription scanning velocity. At higher energies, the index modification increases with increasing inscription scanning velocity with other fabrication parameters constant.

© 2010 Optical Society of America

OCIS Codes
(140.7090) Lasers and laser optics : Ultrafast lasers
(230.7390) Optical devices : Waveguides, planar

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 1, 2009
Revised Manuscript: February 8, 2010
Manuscript Accepted: March 4, 2010
Published: March 29, 2010

Citation
Thomas Allsop, Mykhaylo Dubov, Vladimir Mezentsev, and Ian Bennion, "Inscription and characterization of waveguides written into borosilicate glass by a high-repetition-rate femtosecond laser at 800 nm," Appl. Opt. 49, 1938-1950 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-10-1938

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