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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 27, Iss. 5 — May. 1, 2010
  • pp: 927–932

Pulse recording of thermal and linkage isomer gratings in nitrosyl compounds

Mikhail Goulkov, Dominik Schaniel, and Theo Woike  »View Author Affiliations


JOSA B, Vol. 27, Issue 5, pp. 927-932 (2010)
http://dx.doi.org/10.1364/JOSAB.27.000927


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Abstract

Two different kinds of short-lived phase gratings are written with identically and orthogonally polarized waves using nanosecond laser pulses in single crystals of the nitrosyl compounds Na 2 [ Fe ( CN ) 5 NO ] 2 H 2 O , ( CN 3 H 6 ) 2 [ Fe ( CN ) 5 NO ] , and Ba [ Fe ( CN ) 5 NO ] 3 H 2 O . With identically polarized recording beams thermal gratings are written by the thermo-optic effect, which results from the spatially modulated thermo-optic coefficient n / T . The lifetime τ dif of such gratings depends quadratically on the spatial grating frequency K with the thermal diffusion coefficient D dif as the material parameter: τ dif = D dif 1 K 2 . Upon recording with mutually orthogonally polarized beams no intensity modulation occurs, but the resulting modulation of the polarization leads to the generation of light-induced linkage NO-isomers with varying efficiency according to the local state of the light polarization. This rotation of the NO ligand by nearly 90° results in a modulation of the polarizability and with this of the refractive index of the crystal.

© 2010 Optical Society of America

OCIS Codes
(090.7330) Holography : Volume gratings
(160.5320) Materials : Photorefractive materials
(350.5130) Other areas of optics : Photochemistry
(160.5335) Materials : Photosensitive materials

ToC Category:
Materials

History
Original Manuscript: December 23, 2009
Revised Manuscript: March 3, 2010
Manuscript Accepted: March 4, 2010
Published: April 20, 2010

Citation
Mikhail Goulkov, Dominik Schaniel, and Theo Woike, "Pulse recording of thermal and linkage isomer gratings in nitrosyl compounds," J. Opt. Soc. Am. B 27, 927-932 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-5-927

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