Abstract

We analyze nonlinear excitation in a four-level atomic system that exhibits electromagnetically induced transparency induced by a strong coupling laser. We show that, at the line center of the atomic transition, the nondegenerate two-photon excitation in the dressed states can be enhanced by constructive quantum interference in two excitation paths while the linear absorption is inhibited by destructive quantum interference. We report an experimental study of the interference-enhanced two-photon absorption in a multilevel Λ-type rubidium atomic system and compare the measurements with the theoretical calculations.

© 2000 Optical Society of America

Nonlinear absorption by quantum interference in cold atoms

Min Yan, Edward G. Rickey, and Yifu Zhu
Opt. Lett. 26(8) 548-550 (2001)

Electromagnetically induced transparency in cold rubidium atoms

Min Yan, Edward G. Rickey, and Yifu Zhu
J. Opt. Soc. Am. B 18(8) 1057-1062 (2001)

Collisional-dephasing and Doppler-broadening effects on quantum interference in a Vee atomic system

Peng Zhou and S. Swain
J. Opt. Soc. Am. B 15(10) 2593-2598 (1998)

Three-photon electromagnetically induced absorption in a dressed atomic system

Kang Zhou, Xiang-an Yan, Yujing Han, Wanting Xu, Haowei Ti, Haogong Liu, and Yiru Chen
J. Opt. Soc. Am. B 39(2) 501-507 (2022)

Effect of Doppler broadening on giant self-Kerr nonlinearity in a five-level ladder-type system

Nguyen Huy Bang, Dinh Xuan Khoa, Doan Hoai Son, and Le Van Doai
J. Opt. Soc. Am. B 36(11) 3151-3158 (2019)