Tunable high-order photonic band gaps of ultraviolet light in cold atoms

Zhang, Yan; Liu, Yi-Mou; Tian, Xue-Dong; Zheng, T. Y.; Wu, Jin-Hui

doi:10.1103/physreva.91.013826

Cited by 16 publications

(5 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Applying standing-wave (SW), instead of traveling-wave (TW), control fields in atomic media subject to electromagnetically induced transparency (EIT) [28] is an efficient way to realize complex periodic potentials that lay at the basis of well-known phenomena such as dynamically tunable photonic band gaps (PBGs) [29][30][31] and stationary light pulses (SLPs) [32][33][34]. This method has also been used to realize structures * jhwu@nenu.edu.cn of electromagnetically induced gratings (EIGs) [35][36][37][38] with special forms of spatially periodic absorption and dispersion.…”

Section: Introductionmentioning

confidence: 99%

Lopsided diffractions of distinct symmetries in two-dimensional non-Hermitian optical gratings

Liu

Gao

et al. 2019

Phys. Rev. A

Self Cite

View full text Add to dashboard Cite

Fraunhofer light diffraction across a thin two-dimensional lattice of cold atoms subject to transverse hybrid modulations of two standing-wave crossed pump fields is seen to yield lopsided patterns of various degrees of symmetry. We show that one can fully restrain the diffraction of a weak incident probe to two diagonal or adjacent quadrants or even just to a single quadrant, depending on the phases of two standing-wave pumps and on the probe detuning. Different diffraction symmetries with respect to the axes or diagonals of the diffraction plane quadrants are interpreted here in terms of different out-of-phase interplay of absorption and dispersion periodic distributions, resulting from different combinations of Hermitian, PT-symmetric, and non-Hermitian modulations.

show abstract

Section: Introductionmentioning

confidence: 99%

Lopsided diffractions of distinct symmetries in two-dimensional non-Hermitian optical gratings

Liu

Gao

et al. 2019

Phys. Rev. A

Self Cite

View full text Add to dashboard Cite

show abstract

“…At last we would like to mention that the present system can be extended. Using a standing-wave coupling field and a traveling-wave coupling field to form a two-photon transition 48 , 49 , a subwavelength grating could be constructed.…”

Section: Discussionmentioning

confidence: 99%

Optically Tunable Gratings Based on Coherent Population Oscillation

Zhang

Wang

et al. 2018

Sci Rep

Self Cite

View full text Add to dashboard Cite

We theoretically study the optically tunable gratings based on a L-type atomic medium using coherent population oscillations from the angle of reflection and transmission of the probe field. Adopting a standing-wave driving field, the refractive index of the medium as well as the absorption are periodically modified. Consequently, the Bragg scattering causes the effective reflection. We show that different intensities of the control field lead to three types of reflection profile which actually correspond to different absorption/amplification features of the medium. We present a detailed analyses about the influence of amplification on the reflection profile as well. The coherent population oscillation is robust to the dephasing effect, and such induced gratings could have promising applications in nonlinear optics and all-optical information processing.

show abstract

“…Electromagnetically induced transparency (EIT), [20] a quantum interference effect induced by a strong coupling field, based on which the optical absorption of a weak probe field can be largely suppressed in a small frequency range while the large-dispersion property remains. Recently, the study of EIT has been extended to atoms confined in optical cavities [21,22] and impurities doped in photonic bandgap (PBG) materials, [23,24] and singular electromagnetic modes in cavities and at band edges may be utilized to control and modify EIT features. Petrosyan's work [25] showed that very narrow bandgap and transmission peak might arise within the transparent window.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity enhancement of micro-optical gyro with photonic crystal*

Yang¹,

Zhao²,

Geng³

et al. 2021

Chinese Phys. B

View full text Add to dashboard Cite

We propose a core rotation-sensing element for improving the sensitivity of the micro-optical gyroscope using the large nonreciprocal effect with a photonic crystal. The sharp transmission peak of electromagnetically induced transparency in photonic crystal generated from a periodic distribution of cold atoms is sensitive to the rotation. Our numerical results show that the sensitivity of relative rotation is about 50 times higher and the sensitivity of absolute rotation is more than two orders higher than that of the traditional resonant optical gyroscope. Also, the sensitivity of the gyroscope can be manipulated by varying the atomic density, modulation frequency, probe pulse width, and photonic crystal length, etc.

show abstract

Tunable high-order photonic band gaps of ultraviolet light in cold atoms

Cited by 16 publications

References 38 publications

Lopsided diffractions of distinct symmetries in two-dimensional non-Hermitian optical gratings

Lopsided diffractions of distinct symmetries in two-dimensional non-Hermitian optical gratings

Optically Tunable Gratings Based on Coherent Population Oscillation

Sensitivity enhancement of micro-optical gyro with photonic crystal*

Contact Info

Product

Resources

About