Excitation of higher spatial harmonics by a moving light pattern in sillenites


We investigate numerically the dependence of higher harmonics of the space-charge field on the detuning frequency between the pump waves, which form a running interference pattern. Bistability and hysteresis of harmonics are predicted for a contrast of the interference pattern m =(0.25-0.3). For contrasts m˜1 and small detuning frequencies we show the existence of a narrow resonance, connected with the nonlinear excitation of a slowly decreasing sequence of spatial harmonics. For experiments we use a BSO crystal in the optical configuration which avoids nonlinear optical distortions. The experimental data show good qualitative agreement with theory.

Uncontrolled Keywords: dependence, higher harmonics, space-charge field, detuning frequency, pump waves, interference pattern, bistability, hysteresis, narrow resonance, nonlinear excitation
Publication ISSN: 0030-4018
Last Modified: 23 Oct 2019 11:28
Date Deposited: 04 May 2011 10:36
Published Date: 1996-11-01
Authors: McClelland, T.E.
Webb, David J.
Sturman, B.I.
Shamonina, E.
Mann, M.
Ringhofer, K.H.


Item under embargo.

Export / Share Citation


Additional statistics for this record