Electromagnetically induced transparency in five-level cascade scheme of 85Rb atoms: An analytical approach

Optical Bistability in a Controllable Giant Self-Kerr Nonlinear Gaseous Medium under Electromagnetically Induced Transparency and Doppler Broadening

“…The advent of EIT [4] offers coherent media of vanished resonant absorption [5][6][7][8] and controllable giant Kerr nonlinearity [9][10][11]. Wang et al performed a direct measurement of self-Kerr nonlinear coefficient in a three-level lambda EIT medium in the presence of Doppler broadening by using a cavity scanning technique.…”

EIT line shape in an open and partially closed multilevel V-type system

“…These effects are induced due to the atom-laser interaction and lead to interesting modifications of the optical properties of an atomic medium producing a variety of nonlinear resonances such as electromagnetically induced transparency (EIT) [1][2][3][4][5][6][7][8][9][10][11][12], electromagnetically induced absorption (EIA) [13][14][15][16][17][18], coherent population trapping (CPT) [19], lasing without inversion (LWI) [20][21][22][23], enhancement of refractive index of the absorbing medium [24] etc. The first demonstration of the atomic coherence effect was based on Lambda (Λ) type EIT [1,2].…”

Propagation of a laser pulse in a three-level cascade atomic medium under conditions of electromagnetically induced transparency

“…2(a)-(c) and Figs. 2(e)-(f), we see that for small and moderate coupling pulse areas ( c0  0  10) the probe laser pulse is significantly distorted during propagation, and each pulse breaks up into several sub-pulses with positive and negative amplitudes [16,19]. The number of oscillations at the trailing edge of the pulse increases as the propagation distance increases.…”

“…If one increases the peak intensities of a coupling laser pulse, the EIT effect is established at shorter pulse duration. More recently, we have investigated the EIT effect in a five-level cascade system in a steady regime [16]. In this work, using the properties of EIT we study the propagation dynamics of a single pair of short laser pulses in a three-level cascade atomic medium.…”

“…When the pulse duration (sub-ps or ps) is shorter than the lifetime of the excited state |2and therefore the pulse area is small, the EIT effect has not yet appeared. In this case, we simply observe the oscillations at the trailing edge of the probe pulse [16,19], as shown in Fig. 2(a) and (b).…”