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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 12 — Apr. 20, 2008
  • pp: 2098–2102

Low-loss waveguides fabricated in BK7 glass by high repetition rate femtosecond fiber laser

Shane M. Eaton, Mi Li Ng, Jörn Bonse, Alexandre Mermillod-Blondin, Haibin Zhang, Arkadi Rosenfeld, and Peter R. Herman  »View Author Affiliations


Applied Optics, Vol. 47, Issue 12, pp. 2098-2102 (2008)
http://dx.doi.org/10.1364/AO.47.002098


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Abstract

For the first time femtosecond-laser writing has inscribed low-loss optical waveguides in Schott BK7 glass, a commercially important type of borosilicate widely used in optical applications. The use of a variable repetition rate laser enabled the identification of a narrow processing window at 1 MHz repetition rate with optimal waveguides exhibiting propagation losses of 0.3 dB / cm and efficient mode matching to standard optical fibers at a 1550 nm wavelength. The waveguides were characterized by complementary phase contrast and optical transmission microscopy, identifying a micrometer-sized guiding region within a larger complex structure of both positive and negative refractive index variations.

© 2008 Optical Society of America

OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(230.7370) Optical devices : Waveguides
(320.2250) Ultrafast optics : Femtosecond phenomena
(350.3390) Other areas of optics : Laser materials processing

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: February 15, 2008
Manuscript Accepted: March 2, 2008
Published: April 16, 2008

Citation
Shane M. Eaton, Mi Li Ng, Jörn Bonse, Alexandre Mermillod-Blondin, Haibin Zhang, Arkadi Rosenfeld, and Peter R. Herman, "Low-loss waveguides fabricated in BK7 glass by high repetition rate femtosecond fiber laser," Appl. Opt. 47, 2098-2102 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-12-2098

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