High-sensitivity, single-beam n_2 measurements
Year: 1989
Type: article
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 Nd:YAG laser pulses.
Source: Optics Letters
DOI: 10.1364/ol.14.000955
Authors: M. Sheik-bahae, A. A. Said, E. W. Van Stryland
Institution: University of Central Florida
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2125097568