Abstract

Optical phase conjugation of the two-photon-pumped frequency upconversion backward stimulated emission of a new dye solution has been demonstrated. When the 1064-nm pump intensity reaches a certain threshold value, a highly directional and phase-conjugate backward stimulated emission at $\sim 616-\mathrm{nm}$ wavelength can be observed. After backward passage through an aberration plate placed in the input pump beam path, the introduced aberration influence (1.6–1.8 mrad) can be entirely compensated by backward stimulated emission with a final beam divergence of only 0.23 mrad. The net conversion efficiency from the absorbed IR pump energy to the backward visible stimulated emission energy can reach 10%.

© 1997 Optical Society of America

Phase-conjugation properties of two-photon-pumped backward-stimulated emission. I. Experimental studies

Guang S. He and Paras N. Prasad
J. Opt. Soc. Am. B 15(3) 1078-1085 (1998)

Ultrashort 1.5-µm laser excited upconverted stimulated emission based on simultaneous three-photon absorption

Guang S. He, Jianming Dai, Tzu-Chau Lin, Przemyslaw P. Markowicz, and Paras N. Prasad
Opt. Lett. 28(9) 719-721 (2003)

Phase-conjugation properties of two-photon-pumped backward-stimulated emission. II. Theoretical studies

Guang S. He, Ning Cheng, Paras N. Prasad, Dun Liu, and Song H. Liu
J. Opt. Soc. Am. B 15(3) 1086-1095 (1998)

Two-photon-pumped frequency-upconverted blue lasing in Coumarin dye solution

Guang S. He, Raffaella Signorini, and Paras N. Prasad
Appl. Opt. 37(24) 5720-5726 (1998)

Stimulated Rayleigh-Bragg scattering in a three-photon absorbing medium and its phase-conjugation property

Guang S. He, Qingdong Zheng, and Paras N. Prasad
J. Opt. Soc. Am. B 24(5) 1166-1177 (2007)