Efficient hyper-Raman scattering in resonant coherent media.
We propose and analyze a hyper-Raman scheme for generation of coherent light in a five-level atomic system based on electromagnetically induced transparency (EIT). We show that EIT suppresses linear and nonlinear photon absorption and enables the hyper-Raman process to proceed through real, near-resonant intermediate states. The scheme greatly enhances hyper-Raman efficiency and may be used for generating short-wavelength radiation at low pump intensities.
Wu
Ying
Y
National Key Laboratory for Laser Technique and Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China. yingwu2@eyou.com
Wen
Lingling
L
Zhu
Yifu
Y