Experimental examination of frequency locking effect in acousto-optic system
- 77 Downloads
The optoelectronic system containing collinear acousto-optic cell fabricated on the base of calcium molybdate crystal and positive electronic feedback circuit was examined. The feedback signal is formed due to the optical heterodyning effect that occurs on the cell output and takes place in the special regime of collinear acousto-optic diffraction. It was discovered that three operation modes that may exist in this system. The boundaries between the modes were determined. The positions of the boundaries depend on the main parameters of the system—the incident light intensity and the feedback gain value. The new for acousto-optics phenomenon of acousto-optic system self-oscillations frequency locking by the RF generator signal was discovered and examined experimentally. Such an effect has never been observed before in the acousto-optic systems. It was experimentally shown that frequency locking effect may be used to select one of the multimode semiconductor laser longitudinal modes to improve laser radiation spectral composition.
The authors are grateful to all members of the Acousto-Optical Research Center of the National University of Science and Technology “MISIS” and especially to K. B. Yushkov and V. Ya. Molchanov for the assistance in experiments. The work has been supported by the Russian Science Foundation (RSF), project 14-22-00042.
- 1.J. Xu, R. Stroud, Acousto-Optic Devices. (Wiley, New York, 1992)Google Scholar
- 2.A. Korpel, Acousto-Optics. (M. Dekker, Inc, New York, 1996)Google Scholar
- 3.A.P. Goutzoulis, D.R. Pape eds. Design and Fabrication of Acousto-Optic Devices (M. Dekker, Inc, New York, 1994)Google Scholar
- 10.V.I. Balakshy, A.I. Bychkov, Yu..I. Kuznetsov, S.A. Shabunin, J. Commun. Technol. Electron. 50(9), 1082 (2005)Google Scholar
- 22.A. Cont, T.-C. Poon, Proc. of the 35th Southeastern Symposium on System Theory, 2003. pp. 296–298. https://doi.org/10.1109/SSST.2003.1194577
- 30.V.V. Migulin, V.I. Medvedev, E.R. Mustel, V.N. Parygin, Basic theory of oscillations. (Mir, Moscow, 1983)Google Scholar