Figure 1
From: Phase Modulation in Rydberg Dressed Multi-Wave Mixing processes
(a) A five-level atomic system in Rydberg-EIT rubidium atom for dressed MWM processes. (b) Experimental setup for different MWM processes. L-lens, D-detector, FD-frequency doubler, HW-half wave plate with corresponding wavelength, PBS-polarized beam splitter with corresponding wavelength. Double-headed arrows and filled dots denote horizontal polarization and vertical polarization of the incident beams, respectively. (c) Theoretical calculations corresponding to the change in refractive index (Δnr) of a medium for a probe laser (or MWM signal) frequency versus Δ1 and Δ2. Ω1 = 2π × 54 MHz, Ω2 = 2π × 7.6 MHz, Ω4 = 2π × 142 MHz, Ω4′ = 2π × 224 MHz. The atom density is 1.0 × 1012 cm−3.
