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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 17 — Sep. 1, 2011
  • pp: 3395–3397

Direct laser writing of near-IR step-index buried channel waveguides in rare earth doped YAG

A. Rodenas, A. Benayas, J. R. Macdonald, J. Zhang, D. Y. Tang, D. Jaque, and A. K. Kar  »View Author Affiliations


Optics Letters, Vol. 36, Issue 17, pp. 3395-3397 (2011)
http://dx.doi.org/10.1364/OL.36.003395


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Abstract

A new (to our knowledge) ultrashort laser pulse irradiation regime that allows us to directly modify and increase the refractive index of rare earth doped YAG polycrystalline ceramics has been identified. Single-mode buried channel waveguides in both Ho:YAG and Er:YAG ceramics at the near-IR wavelengths of 1.55 μm and 1.95 μm are demonstrated by fabricating positive square step-index cores. Minimum propagation losses of 1.5 dB cm 1 at a 1.51 μm wavelength have been preliminarily obtained. Confocal microluminescence mapping reveals that the increased refractive index regions retain the near-IR spectral properties of Er 3 + ions in the YAG crystalline matrix.

© 2011 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(140.3390) Lasers and laser optics : Laser materials processing

ToC Category:
Integrated Optics

History
Original Manuscript: July 22, 2011
Revised Manuscript: July 29, 2011
Manuscript Accepted: July 29, 2011
Published: August 26, 2011

Citation
A. Rodenas, A. Benayas, J. R. Macdonald, J. Zhang, D. Y. Tang, D. Jaque, and A. K. Kar, "Direct laser writing of near-IR step-index buried channel waveguides in rare earth doped YAG," Opt. Lett. 36, 3395-3397 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-17-3395


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