Polarization interference in six-wave mixing in a Doppler-broadened N-type four-level system

Niu, Jinyan; Wang, Ruquan; Wu, Ling‐An; Fu, Panming

doi:10.1364/josab.26.002268

Cited by 5 publications

(5 citation statements)

References 18 publications

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“…Although this subject has been discussed in Refs. [15] and [16], here we concentrate on the physics underlying. Specifically, due the atomic motion, the atomic polarizations acquire different phases for atoms with different velocities as time evolves.…”

Section: Discussionmentioning

confidence: 99%

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Autler–Townes spectroscopy of high-lying state by phase conjugate six-wave mixing

Bai¹,

Li²,

Wu³

et al. 2017

Chinese Phys. B

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An Autler-Townes (AT) spectroscopy based on phase conjugate six-wave mixing (SWM) is proposed to detect AT doublet of high-lying state in a Doppler-broadened cascade four-level system. It is found that the SWM spectrum is dependent strongly on the ratios between the magnitudes of the wave vectors. We discuss how the Doppler broadening affects the SWM spectrum from a time-domain viewpoint and find that, due the atomic motion, the atomic polarizations acquire different phases for atoms with different velocities as time evolves. The Doppler free SWM spectrum can be obtained only when the atomic polarization can be rephasing again at certain time after the interactions of all the incident fields.

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Section: Discussionmentioning

confidence: 99%

“…Otherwise, the randomization of the phases of the atomic polarizations will cause additional broadening of the spectrum line. [15][16][17] Finally, we turn to the SWM. Atoms with velocity v interact with the fields G 1 , G 2 , G 3 , (G 3 ) * , and…”

Section: The Polarization Interference In Dopplerbroadened Systemmentioning

confidence: 99%

Autler–Townes spectroscopy of high-lying state by phase conjugate six-wave mixing

Bai¹,

Li²,

Wu³

et al. 2017

Chinese Phys. B

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“…Physically, EIT is closely related to the Autler-Townes (AT) effect, [24] where dressed states are probed through a transition to or from a third level as a doublet excitation spectrum. Previously, we studied AT splitting in EIT-based six-wave mixing (SWM) in a Doppler-broadened system; [25][26][27] the effects of Doppler broadening on the splitting were explained by a dressed-state model, whereby we analyze the velocities at which the atoms become resonant with the dressed states through Doppler frequency shifting. Based on this dressedstate model, in this paper we shall study the EIT in a Dopplerbroadened cascaded three-level system.…”

Section: Introductionmentioning

confidence: 99%

Macroscopic effects in electromagnetically-induced transparency in a Doppler-broadened system

Pei¹,

Niu²,

Wang³

et al. 2015

Chinese Phys. B

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We study the electromagnetically-induced transparency (EIT) in a Doppler-broadened cascaded three-level system. We decompose the susceptibility responsible for the EIT resonance into a linear and a nonlinear part, and the EIT resonance reflects mainly the characteristics of the nonlinear susceptibility. It is found that the macroscopic polarization interference effect plays a crucial role in determining the EIT resonance spectrum. To obtain a Doppler-free spectrum there must be polarization interference between atoms of different velocities. A dressed-state model, which analyzes the velocities at which the atoms are in resonance with the dressed states through Doppler frequency shifting, is employed to explain the results.

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“…Moreover, higherorder wave mixing has attracted much attention [17][18][19][20]. In our previous works, we studied the AT splitting in electromagnetically-induced-transparency-based (EIT-based) six-wave mixing (SWM) in a Doppler-broadened system [21,22]. An AT doublet appears in the SWM spectrum when atoms with specific velocities have double resonance with one of the dressed states and with a third level.…”

Section: Introductionmentioning

confidence: 99%

Effects of Doppler broadening on Autler-Townes splitting in six-wave mixing

Niu

Pei

et al. 2011

Phys. Rev. A

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The effects of Doppler broadening on Autler-Townes (AT) splitting in six-wave mixing (SWM) are investigated by the dressed-state model. We analyze the velocities at which the atoms are in resonance with the dressed states through Doppler frequency shifting and find that, depending on the wave-number ratio, there may be two resonant velocities which can originate from resonance with one of the dressed states or from resonance with two different dressed states. Based on this model, we discuss a novel type of AT doublet in the SWM spectrum, where macroscopic effects play an important role. Specifically, the existence of resonant peaks requires polarization interference between atoms of different velocities in addition to a change in the number of resonant atoms involved. Our model can also be employed to analyze electromagnetically induced transparency resonance and other types of Doppler-free high-resolution AT spectroscopy.

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Polarization interference in six-wave mixing in a Doppler-broadened N-type four-level system

Cited by 5 publications

References 18 publications

Autler–Townes spectroscopy of high-lying state by phase conjugate six-wave mixing

Autler–Townes spectroscopy of high-lying state by phase conjugate six-wave mixing

Macroscopic effects in electromagnetically-induced transparency in a Doppler-broadened system

Effects of Doppler broadening on Autler-Townes splitting in six-wave mixing

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