E Benkler et al 2000 J. Opt. A: Pure Appl. Opt. 2 303 doi:10.1088/1464-4258/2/4/311
E Benkler, M Kreuzer, R Neubecker and T Tschudi
Show affiliationsA self-regulating method for the control of spontaneous instabilities of the transversal beam profile in nonlinear optical systems is experimentally realized. The control method is the high-dimensional analogue of classical negative feedback regulators. An all-optical implementation with its capabilities of parallel processing is essential for the experimental feasibility. Unstable system-inherent transversal patterns are stabilized, including also the stationary homogeneous state. Even spatio-temporal disorder is removed in favour of the highly symmetric, stationary patterns and nearly without losses of output power. The manipulation of the output state is demonstrated to be noninvasive. This allows investigations of the otherwise inaccessible unstable patterns, for which an example is given.
Issue 4 (July 2000)
Received 14 December 1999, in final form 27 March 2000
E Benkler et al 2000 J. Opt. A: Pure Appl. Opt. 2 303
K Gunther et al 1976 J. Phys. D: Appl. Phys. 9 1139
David W Ward et al 2005 New J. Phys. 7 213
W G Chadband 1991 J. Phys. D: Appl. Phys. 24 56
D Milic et al 1996 Quantum Semiclass. Opt. 8 629
Emmanuel Frécon and Mårten Stenius 1998 Distrib. Syst. Engng. 5 91
M R Koblischka and R J Wijngaarden 1995 Supercond. Sci. Technol. 8 199
Sung-Sik Yun and Jong-Hyun Lee 2003 J. Micromech. Microeng. 13 721
Ajay D Kshemkalyani et al 1998 Distrib. Syst. Engng. 5 1
S Crosby et al 2007 New J. Phys. 9 285