We report the behavior of Autler–Townes splitting and production of a four-wave mixing (FWM) field in rubidium in the context of laser-induced transparency. Gain saturation of the FWM and simultaneous suppression of Autler–Townes splitting above a critical concentration are interpreted in terms of the odd-photon destructive interference effect. The results demonstrate that, when multimode lasers are used, odd-photon destructive interference significantly limits the high-efficiency and high-intensity FWM generation promised by early studies of laser-induced transparency.
© 1996 Optical Society of America
Lu Deng, W. R. Garrett, M. G. Payne, and D. Z. Lee, "Observation of a critical concentration in laser-induced transparency and multiphoton excitation and ionization in rubidium," Opt. Lett. 21, 928-930 (1996)