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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 2 — Jan. 15, 2013
  • pp: 172–174

Axicon-based writing of waveguides in BK7 glass

Jayashree A. Dharmadhikari, Rodney Bernard, Anuj K. Bhatnagar, Deepak Mathur, and Aditya K. Dharmadhikari  »View Author Affiliations


Optics Letters, Vol. 38, Issue 2, pp. 172-174 (2013)
http://dx.doi.org/10.1364/OL.38.000172


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Abstract

We report on the direct writing of waveguide structures using an axicon lens to focus a 40 fs laser pulse within BK7 glass. The written structures are characterized for waveguiding action: waveguiding action for 635 and 1550 nm light and propagation loss as low as 0.19dB/cm is measured. Loss values decrease with laser exposure time for incident energy of 300 μJ, indicating enhancement of index contrast. At higher energies, a reverse trend is obtained: higher loss values are obtained as index contrast degrades with an increase in exposure time.

© 2013 Optical Society of America

OCIS Codes
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(230.7370) Optical devices : Waveguides
(350.3390) Other areas of optics : Laser materials processing

ToC Category:
Optical Devices

History
Original Manuscript: November 2, 2012
Revised Manuscript: December 11, 2012
Manuscript Accepted: December 12, 2012
Published: January 10, 2013

Citation
Jayashree A. Dharmadhikari, Rodney Bernard, Anuj K. Bhatnagar, Deepak Mathur, and Aditya K. Dharmadhikari, "Axicon-based writing of waveguides in BK7 glass," Opt. Lett. 38, 172-174 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-2-172

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