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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 16, Iss. 7 — Apr. 1, 1991
  • pp: 458–460

Large nonresonant light-induced refractive-index changes in thin films of amorphous arsenic sulfide

E. M. True and L. McCaughan  »View Author Affiliations


Optics Letters, Vol. 16, Issue 7, pp. 458-460 (1991)
http://dx.doi.org/10.1364/OL.16.000458


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Abstract

We have measured a light-intensity-dependent change in the refractive index of thin films of the amorphous semiconductor arsenic sulfide. In a novel type of nonlinearity, strongly absorbed light produces a relatively large change in the optical properties of the material at wavelengths where the absorption is weak. This represents a compromise between the large resonant nonlinearities found in crystalline semiconductors, which have the disadvantage of large signal attenuation, and the nonresonant nonlinearities, which occur at wavelengths with low absorption but are small.

© 1991 Optical Society of America

History
Original Manuscript: October 22, 1990
Revised Manuscript: February 1, 1991
Manuscript Accepted: November 19, 1990
Published: April 1, 1991

Citation
E. M. True and L. McCaughan, "Large nonresonant light-induced refractive-index changes in thin films of amorphous arsenic sulfide," Opt. Lett. 16, 458-460 (1991)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-16-7-458

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