Abstract

We report a simple extension of the Z-scan technique that permits a spectral line-shape measurement of the real and the imaginary parts of n2. In this technique the sample is placed at the peak position of the usual Z-scan curve while the laser frequency is scanned. We employed this method to investigate the nonlinear susceptibility of the R lines of ruby and alexandrite, using a cw dye laser. This susceptibility can be explained by the resonant interaction and by a nonresonant contribution that is due to the difference in polarizability between Cr3+ excited and ground states. For ruby, the nonresonant contribution to the technique is 1 order of magnitude larger than the resonant contribution. However, for alexandrite both contributions are comparable, and their interference leads to a shift between n2 and n2 spectra that is not observed in ruby.

© 2002 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Optically pump-induced athermal and nonresonant refractive index changes in the reference Cr-doped laser materials: Cr:GSGG and ruby

Thomas Godin, Richard Moncorgé, Jean-Louis Doualan, Mickael Fromager, Kamel Ait-Ameur, Renato Antonio Cruz, and Tomaz Catunda
J. Opt. Soc. Am. B 29(5) 1055-1064 (2012)

Discrimination between electronic and thermal contributions to the nonlinear refractive index of SrAlF5:Cr+3

A. A. Andrade, E. Tenório, T. Catunda, M. L. Baesso, A. Cassanho, and H. P. Jenssen
J. Opt. Soc. Am. B 16(3) 395-400 (1999)

Relation between nonlinear refractive index and third-order susceptibility in absorbing media

Raúl del Coso and Javier Solis
J. Opt. Soc. Am. B 21(3) 640-644 (2004)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription