High-sensitivity, single-beam n(2) measurements.
Opt Lett
; 14(17): 955-7, 1989 Sep 01.
Article
em En
| MEDLINE
| ID: mdl-19753023
ABSTRACT
We present a simple yet highly sensitive single-beam experimental technique for the determination of both the sign and magnitude of n(2). The sample is moved along the z direction of a focused Gaussian beam while the repetitively pulsed laser energy is held fixed. The resultant plot of transmittance through an aperture in the far field yields a dispersion-shaped curve from which n(2) is easily calculated. A transmittance change of 1% corresponds to a phase distortion of approximately lambda/250. We demonstrate this method on several materials using both CO(2) and NdYAG laser pulses.
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01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
Opt Lett
Ano de publicação:
1989
Tipo de documento:
Article