Abstract

A new and efficient technique for measuring weak optical nonlinearities is reported. Like Z scan, its implementation is basic, both experimentally and theoretically, but leads to an improved sensitivity of λ/5.104, which represents, to date, one of the highest observed enhancements. With this technique, which is based upon the use of a position sensitive detector, nonlinear properties are deduced by monitoring the barycentric position of a truncated pump–probe laser beam as the sample is moved along the optical axis. The technique is experimentally validated by measuring the pump-induced refractive index change and the underlying polarizability variation resulting from the excitation of the Cr3+ ions in ruby.

© 2011 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Electronic Enhancement of Faint Photographic Spectra

E. C. Bruner and Vladimir Degen
Appl. Opt. 6(8) 1427-1427 (1967)

Knife-edge profiling of Q-switched Nd:YAG laser beam and waist

Michael Mauck
Appl. Opt. 18(5) 599-600 (1979)

Measurement of Gaussian laser beam radius using the knife-edge technique: improvement on data analysis

Marcos A. de Araújo, Rubens Silva, Emerson de Lima, Daniel P. Pereira, and Paulo C. de Oliveira
Appl. Opt. 48(2) 393-396 (2009)

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 (3)

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 (5)

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