Observation of diffraction pattern in two-dimensional optically induced atomic lattice

Yuan, Jinpeng; Wu, Chengyin; Wang, Lirong; Chen, Gang; Jia, Suotang

doi:10.1364/ol.44.004123

Cited by 60 publications

(21 citation statements)

References 34 publications

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“… 32 – 34 . Experimental observation of the diffraction pattern in a 2D-optically induced atomic lattice is reported 35 in a three-level atomic system. The mechanism of electromagnetically induced Talbot effect similar to EIG has been discussed in Ref.…”

Section: Introductionmentioning

confidence: 99%

Multi-wave-mixing-induced nonlinear modulation of diffraction peaks in an opto-atomic grating

Dutta¹,

Panchadhyayee

Bayal

et al. 2020

Sci Rep

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We propose an atomic model in close-loop configuration, which exhibits controllable symmetric and asymmetric evolution of significantly enhanced diffraction peaks of the weak probe beam in an opto-atomic grating at far-field regime. Such results are obtained by the linear and nonlinear modulation of the intensities of the diffraction peaks as a result of multi-wave-mixing-induced modification of spatially modulated coherence in a closed four-level atomic system. Novelty of the results lies in predicting the diffraction pattern with uniform peak height due to the dominance of the amplitude part of the grating-transfer-function at the condition of exact atom-field resonance, which is unique to the present model. Efficacy of the present scheme is to apply it in producing nonlinear light generated by four-wave-mixing-induced control of spatially modulated coherence effect. The work also finds its importance for its applicability in the field of all-optical devices.

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Section: Introductionmentioning

confidence: 99%

Multi-wave-mixing-induced nonlinear modulation of diffraction peaks in an opto-atomic grating

Dutta¹,

Panchadhyayee

Bayal

et al. 2020

Sci Rep

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show abstract

“…The latter gives an advantage of our EIG www.nature.com/scientificreports/ Experimental feasibility. The experimental evolution of diffraction pattern of probe light has been studied in different atomic or solid state medium [57][58][59] . For example, in three-level ladder type atomic system 58 , Yuan et al, have observed experimentally the diffraction pattern of the weak probe light in two dimensional optical atomic lattice.…”

Section: Resonant Probe and Off-resonant Coupling Fieldsmentioning

confidence: 99%

“…The experimental evolution of diffraction pattern of probe light has been studied in different atomic or solid state medium [57][58][59] . For example, in three-level ladder type atomic system 58 , Yuan et al, have observed experimentally the diffraction pattern of the weak probe light in two dimensional optical atomic lattice. They have used two orthogonal standing wave lights which can be obtained via interference of two pairs of coupling laser fields.…”

Section: Resonant Probe and Off-resonant Coupling Fieldsmentioning

confidence: 99%

Azimuthal modulation of electromagnetically induced grating using structured light

Asadpour

Kirova

Qian

et al. 2021

Sci Rep

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We propose a theoretical scheme for creating a two-dimensional Electromagnetically Induced Grating in a three-level $$\Lambda $$ Λ -type atomic system interacting with a weak probe field and two simultaneous position-dependent coupling fields—a two dimensional standing wave and an optical vortex beam. Upon derivation of the Maxwell wave equation, describing the dynamic response of the probe light in the atomic medium, we perform numerical calculations of the amplitude, phase modulations and Fraunhofer diffraction pattern of the probe field under different system parameters. We show that due to the azimuthal modulation of the Laguerre–Gaussian field, a two-dimensional asymmetric grating is observed, giving an increase of the zeroth and high orders of diffraction, thus transferring the probe energy to the high orders of direction. The asymmetry is especially seen in the case of combining a resonant probe with an off-resonant standing wave coupling and optical vortex fields. Unlike in previously reported asymmetric diffraction gratings for PT symmetric structures, the parity time symmetric structure is not necessary for the asymmetric diffraction grating presented here. The asymmetry is due to the constructive and destructive interference between the amplitude and phase modulations of the grating system, resulting in complete blocking of the diffracted photons at negative or positive angles, due to the coupling of the vortex beam. A detailed analysis of the probe field energy transfer to different orders of diffraction in the case of off-resonant standing wave coupling field proves the possibility of direct control over the performance of the grating.

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“…Atom-based measurements have been successfully used as time, length, and frequency standards due to the unique properties of atoms and molecules [1,2]. The measurement of microwave electric field (E-field) based on a Rydberg atom demonstrates advantages of traceability and self-calibration [3][4][5][6][7] by using the concept of electromagnetically induced transparency (EIT) [8,9] in a room temperature vapor cell.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Microwave Electric Field Measurement Sensitivity via Multi-Carrier Modulation in Rydberg Atoms

Yuan

Wang

2020

Applied Sciences

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The microwave electric field intensity is precisely measured by the Autler–Townes splitting of electromagnetically induced transparency spectrum in a 5S1/2−5P3/2−57D5/2−58P3/2 four-level ladder-type 85Rb atomic system. A robust multi-carrier modulation scheme is employed to improve the spectral signal-to-noise ratio, which determines the optical readout of Rydberg atom-based microwave electrometry. As a result, a factor of 2 measurement sensitivity improvement is clearly achieved compared with the on resonant Autler–Townes splitting case credit to the advantage of matched filtering. This research paves the way for building a high sensitivity, portable sensor and offers a platform for achieving compact and sensitive receiver.

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Observation of diffraction pattern in two-dimensional optically induced atomic lattice

Cited by 60 publications

References 34 publications

Multi-wave-mixing-induced nonlinear modulation of diffraction peaks in an opto-atomic grating

Multi-wave-mixing-induced nonlinear modulation of diffraction peaks in an opto-atomic grating

Azimuthal modulation of electromagnetically induced grating using structured light

Improvement of Microwave Electric Field Measurement Sensitivity via Multi-Carrier Modulation in Rydberg Atoms

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