Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Time-resolved electric-field-induced second harmonic: simultaneous measurement of first and second molecular hyperpolarizabilities

Open Access Open Access

Abstract

The standard electric-field-induced second-harmonic (EFISH) technique for measurement of the first hyperpo larizability ( b ) of nonlinear optical molecules is limited by the fact that the second hyperpolarizability ( g ) also contributes to the second-harmonic signal from which b is deduced. We present a modified time-resolved EFISH in which the first and the second hyperpolarizabilities can be determined separately and accurately in the same experiment. We studied para-nitro aniline dissolved in a highly viscous solvent, glycerol, under conditions whereby the electric field was applied faster than the characteristic time for molecular rotation. This technique enabled the g contribution to the signal to be resolved separately from the b contribution. The results confirm that for this molecule g contributes only ~10% of the total EFISH hyperpolarizability.

© 2001 Optical Society of America


More Like This
Surface second harmonic generation measurements of molecular hyperpolarizabilities

G. T. BOYD, D. A. ENDER, and P. C. LEUNG
WJJ2 International Quantum Electronics Conference (IQEC) 1987

Time-resolved polarization-sensitive measurements of the electric field in a sliding discharge by means of dc-field-induced coherent Raman scattering

S. N. Tskhai, S. V. Mitko, V. N. Ochkin, A. Yu. Serdyuchenko, P. N. Lebedev, D. A. Akimov, D. A. Sidorov-Biryukov, D. V. Sinyaev, and A. M. Zheltikov
QWA5 Quantum Electronics and Laser Science Conference (CLEO:FS) 2001

Comparison of Molecular Hyperpolarizabilities Measured in Gas and Liquid Phases

Philip Kaatz and David P. Shelton
NME.30 Nonlinear Optics: Materials, Fundamentals and Applications (NLO) 1996

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved