Abstract 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.
Received: 24 September 2003
Revised: 06 December 2003
Published: 06 July 2005
(Phase conjugation; photorefractive and Kerr effects)
Cite this article:
Fan Rong-Wei, Chen De-Ying, Fang Tao, Ju You-Lun, Wang Qi, Ma Zu-Guang Optical phase conjugation by resonant degenerate four-wave mixing in liquid phase medium 2004 Chin. Phys. 13 700