研究目的
Investigating the implications of spectral-hole burning on the manipulation of spatial Goos–H?nchen shift in an atomic cell.
研究成果
The study presents a new scheme to report on Goos–H?nchen (GH) shift experienced by the Gaussian light beam incident at the plane optical interface filled with four-level sodium atomic medium in the spectral-hole burning region with and without Doppler broadening effect. The reflection and transmission coefficients as well as the spatial GH shift are functions of probe detuning, collective phase of control fields and inverse Doppler broadening effect in the spectral-hole burning region. The study is expected to be useful for optoelectronic devices and optical-clocking applications.
研究不足
The study is theoretical and lacks experimental validation. The observed GH shift is limited only to a few wavelengths of incident light as compared to physical dimension of the beam, making it difficult to measure experimentally.
1：Experimental Design and Method Selection:
The study employs a theoretical atomic density-matrix formalism to obtain the susceptibility of a four-level sodium atomic medium and uses the stationary-phase-theory to compute the GH shift in the reflected and transmitted probe beams subjected to control fields.
2：Sample Selection and Data Sources:
The study considers a Gaussian light beam incident at the plane optical interface filled with four-level sodium atomic medium.
3：List of Experimental Equipment and Materials:
The optical cavity is made by two nonmagnetic dielectric sheets filled with four-level sodium atomic medium.
4：Experimental Procedures and Operational Workflow:
The interaction of a finite-width Gaussian probe beam with the interface filled with sodium atoms is considered, and the GH shift is calculated by considering the interaction of the probe beam with the atomic medium trapped in the optical interface.
5：Data Analysis Methods:
The study analyzes the absorption and dispersion spectra of the light beam and the corresponding spatial GH shift in the probe beam through hyperfine structure of four-level sodium atomic system.
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