Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Frontiers in Optics

Spontaneous emission spectrum of a three-level lambda-type atom in modified isotropic photonic crystals

Xiudong Sun, Xiangqian Jiang

Published Jan 1, 2006• 0 citations
Publisher

Abstract

Considering a three-level lambda-type atom coupled to the modified isotropic photonic crystals (PCs), we investigate the spontaneous emission spectrum by using resolvent operator. Due to introducing the smooth factor epsilon, the singularity in spectra disappears.
DOI
10.1364/fio.2006.jwd21

Related papers

Decay properties of a three-level lambda-type atom in three-dimensional photonic crystals

Xiaohan Sun, Xiangqian Jiang, Jing-Nuo Wu +1 more

For a three-level Λ-type atom embedded in three-dimensional photonic crystals (PCs), the upper state population and spontaneous emission spectra are investigated with both transitions coupled to the same modified reservoir. By using an anisotropic dispersion model the analytic expressions of the upper state population and spontaneous emission spectra were obtained. The upper state population reaches a steady state value with a slight oscillation, and the spectra show a non-Lorentzian for both transition frequencies inside the band gap.

Journal of Physics B Atomic Molecular and Optical Physics•Apr 30, 2007•4 citations

SPONTANEOUS EMISSION FROM A THREE-LEVEL ATOM EMBEDDED IN A THREE-DIMENSIONAL PHOTONIC CRYSTAL

XIE SHUANG-YUAN, YANG YA-PING, WU XIANG +1 more

We have studied the properties of spontaneous emission from a three-level atom embedded in a photonic crystal. Due to the anisotropic dispersion relation, the density of states lacks singularity. The localized field can disappear and the diffusion field can become intense in some regions.This is different from that in the isotropic dispersion relation case. These properties are directly related to the relative positions of the two upper levels from the band edge.

Acta Physica Sinica•Jan 1, 2000•1 citation

Spontaneous emission spectrum of a four-level atom in a double-band photonic crystal

Jian Wang, Dong Yang, Hanzhuang Zhang

The spontaneous emission spectrum from a four-level atom in a double-band photonic crystal has been investigated. We use the model which assumes three atomic transitions. One of the transitions interacts with the free vacuum modes and the other two transitions couple to the modes of the isotropic photonic band gap (PBG), the anisotropic PBG and another free vacuum. The effects of the fine structure of the lower levels on the spontaneous emission spectrum of an atom are investigated in detail in the three cases. New features of four (two) transparencies with two (one) spontaneous emission peaks, resulting from the fine structure of the lower levels of an atom, are predicted in the case of isotropic PBG modes.

Chinese Physics•Jan 27, 2005•6 citations

Spontaneous Emission Spectrum of a Λ-Typed Atom in a Coherent Photonic Reservoir

Xianshan Huang, Hailian Liu

The spontaneous emission of a three-level A-typed atom embedded in anisotropic photonic crystals with two coherent bands is investigated. The relative position of the atom is described by a position-dependent parameter θ( r 0 ), in regard as the coherence of the two bands. The spectrum of the transition in free space vacuum is discussed. The spectral center can be manipulated by the coherent parameter θ( r 0 ), and the spectral intensity can be adjusted via the atomic transition in the coherent photonic reservoir.

Chinese Physics Letters•Dec 1, 2011•0 citations

Spontaneous emission from a Λ-type atom in anisotropic photonic crystal

Huang Xian-Shan, Xie Shuang-Yuan, Yang Ya-Ping +1 more

The spontaneous emission properties of a Λ_type atom embedded in anisotropic photonic crystals are investigated. We find that the dynamical properties of the atom and the propagating characteristics of the radiation field are obviously influenced by the relative position of the upper level from the forbidden gap and the space between the two lower levels. With the help of numerical calculation and theoretical analysis, we plot the evolution of the total radiation field and its components with the time. Furthermore, we also study the influence of photonic crystals on radiative properties of the atom by means of spontaneous emission spectrum.

Acta Physica Sinica•Jan 1, 2006•2 citations

Spontaneous emission of a three-level atom in a coherent photonic band gap reservoir

Jing-Nuo Wu, Tzong‐Jer Yang, Szu-Cheng Cheng +1 more

The optical spectra of a three-level atom embedded in a photonic crystal is studied by considering the coherent two-band photonic reservoir. We find that the spectrum is shifting with respect to the atomic position.

•Aug 1, 2009•0 citations
For a three-level Λ-type atom embedded in three-dimensional photonic crystals (PCs), the upper state population and spontaneous emission spectra are investigated with both transitions coupled to the same modified reservoir. By using an anisotropic dispersion model the analytic expressions of the upper state population and spontaneous emission spectra were obtained. The upper state population reaches a steady state value with a slight oscillation, and the spectra show a non-Lorentzian for both transition frequencies inside the band gap.
The spontaneous emission spectrum from a four-level atom in a double-band photonic crystal has been investigated. We use the model which assumes three atomic transitions. One of the transitions interacts with the free vacuum modes and the other two transitions couple to the modes of the isotropic photonic band gap (PBG), the anisotropic PBG and another free vacuum. The effects of the fine structure of the lower levels on the spontaneous emission spectrum of an atom are investigated in detail in the three cases. New features of four (two) transparencies with two (one) spontaneous emission peaks, resulting from the fine structure of the lower levels of an atom, are predicted in the case of isotropic PBG modes.
The spontaneous emission of a three-level A-typed atom embedded in anisotropic photonic crystals with two coherent bands is investigated. The relative position of the atom is described by a position-dependent parameter θ( r 0 ), in regard as the coherence of the two bands. The spectrum of the transition in free space vacuum is discussed. The spectral center can be manipulated by the coherent parameter θ( r 0 ), and the spectral intensity can be adjusted via the atomic transition in the coherent photonic reservoir.
The spontaneous emission properties of a Λ_type atom embedded in anisotropic photonic crystals are investigated. We find that the dynamical properties of the atom and the propagating characteristics of the radiation field are obviously influenced by the relative position of the upper level from the forbidden gap and the space between the two lower levels. With the help of numerical calculation and theoretical analysis, we plot the evolution of the total radiation field and its components with the time. Furthermore, we also study the influence of photonic crystals on radiative properties of the atom by means of spontaneous emission spectrum.