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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 4 — Feb. 15, 2010
  • pp: 577–579

Laser-induced refractive index changes in nanocrystalline diamond membranes

Jana Preclíková, Alexander Kromka, Bohuslav Rezek, and Petr Malý  »View Author Affiliations


Optics Letters, Vol. 35, Issue 4, pp. 577-579 (2010)
http://dx.doi.org/10.1364/OL.35.000577


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Abstract

We have observed what we believe to be a new phenomenon in nanocrystalline diamond membranes. The optical thickness of the membrane is changed under laser irradiation, which leads to a spectral shift of interference fringes in the transmission and photoluminescence spectra of high-quality thin self-supporting nanocrystalline membranes. The direction of the spectral shift (red/blue) can be tuned by the ambient air pressure. The effect is reversible and is accompanied by changes in photoluminescence intensity. We interpret the results in terms of the changes in the index of refraction caused by the photoinduced adsorption/desorption of air molecules that subsequently affect the properties of subgap energy states related to the surface and the grain boundaries of the nanocrystals.

© 2010 Optical Society of America

OCIS Codes
(310.6860) Thin films : Thin films, optical properties
(350.3450) Other areas of optics : Laser-induced chemistry
(160.4236) Materials : Nanomaterials

ToC Category:
Materials

History
Original Manuscript: September 23, 2009
Revised Manuscript: January 7, 2010
Manuscript Accepted: January 7, 2010
Published: February 11, 2010

Citation
Jana Preclíková, Alexander Kromka, Bohuslav Rezek, and Petr Malý, "Laser-induced refractive index changes in nanocrystalline diamond membranes," Opt. Lett. 35, 577-579 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-4-577

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