Resonant Raman scattering of light in the region of the ground state

P. P. Shorygin

Alexander V. Baranov, Яков Семенович Бобович, V.I. Petrov

Joachım Herrmann, J. Wienecke

Yunsheng Huo, Qihong Lou, Zian Ding +1 more

The effects of ground-state depletion of atoms on the characteristics of stimulated Raman scattering in metal vapors are studied by simultaneously solving the rate equation of the atomic energy levels related in the Raman scattering, and the equations describing the energy conversion from the focused pump-laser pulses to the Raman down-converted pulses. The ground states of metal atoms are depleted most strongly in the regions near the focal spots of the pump beams because of the higher intensities of light and smaller available medium volume in those regions. This will result in the unsymmetrical shapes of the Raman-shifted pulses for the front and rear edges, and will reduce the energy-conversion efficiency.

T. Takagahara

Yunsheng Huo, Qihong Lou, Zian Ding +1 more

The effects of ground state depletion of atoms on the characteristics of stimulated Raman scattering in metal vapors are studied by simultaniously solving the rate-equation of the atom energy levels related in the Raman scattering, and the equations describing the energy-conversion from the focused pump laser pulses to the Raman down-converted pulses. The ground state of metal atoms are depleted most strongly in the regions near the focal spots of the pump beams because of the higher intensities of light and smaller available medium volume in thosa regions. This will result in the unsymmetrical shapes of the Raman-shifted pulses for the front and rear edges, and will reduce the energy-conversion efficiency.