Optical Phase Conjugation by Degenerate Four Wave Mixing in a Single Level Quantum Well

J. Mlynek, Fedor M. Mitschke, E. Köster +1 more

Agisilaos Bolovinos, S. Cohen, A. Lyras +3 more

Govind Prasad Agrawal

Fan Rong-Wei, Deying Chen, Fang Tao +3 more

In this paper, frequency-doubled Nd:YAG laser's phase conjugation has been investigated experimentally using resonant degenerate four-wave mixing (DFWM). The iodine solution was used as resonant medium. In this way, the energy of the DFWM phase conjugation beam arrived at 43μJ/pulse while the total pump beam's energy reached 8mJ/pulse. The relation between the pulse energy of the DFWM phase conjugation beam and that of the pump beam was investigated. We also measured the optical field distributions of pump beam and DFWM phase conjugation beam, from which it can be noticed that the DFWM phase conjugation can improve the laser beam quality. At the same time, we observed the influence of the pump beam's disturbance on the DFWM signal.

A. Brignon, J.-P. Huignard

David L. Naylor, Patrick W. Tam, R. W. Hellwarth

We use an experimental procedure first proposed by Basov et al 1 to measure the fidelity of the optical wavefront reconstruction process of phase conjugation due to degenerate four-wave mixing by photorefraction in a poled single crystal of p-type BaTiC3. A similar procedure was recently used to measure the phase-conjugate fidelity in stimulated Brillouin scattering.2