Coherent ultraviolet generated by wavepackets interacting with χ(3) In Rb and K atoms

J. Gao; H. C. Tran; P. C. John; J. G. Eden

doi:10.1117/12.311943

Coherent ultraviolet generated by wavepackets interacting with χ⁽³⁾ In Rb and K atoms

J. Gao, H. C. Tran, P. C. John, J. G. Eden

Research output: Contribution to journal › Conference article › peer-review

Abstract

Wavepackets formed from the ns and (n-2)d states of Rb and K (n = 8 for K, 11 and 12 for Rb) have been observed by four wave mixing in pump-probe experiments. The temporal behavior of the wavepacket is observed by monitoring the coherent ultraviolet radiation generated near the alkali mp ²P → ²S_1/2 resonance transitions (7 ≤ m ≤ 12 for Rb) when a ∼100 fs, red probe pulse (λ ∼620 nm) is scattered by the wavepacket established by an earlier (identical) pump pulse. The spatial and spectral characteristics of the ultraviolet emission are well-described by axially phase-matched, four wave mixing and all of the prominent frequency components of the wavepackets are associated with energy differences between pairs of excited states for which Δl = 0 or 2. These results demonstrate that the wavepacket modulates χ⁽³⁾ of the medium, thus rendering the wavepacket detectable.

Original language	English (US)
Pages (from-to)	214-222
Number of pages	9
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	3403
DOIs	https://doi.org/10.1117/12.311943
State	Published - 1997
Event	International Conference on Atomic and Molecular Pulsed Lasers II - Tomsk, Russian Federation Duration: Sep 22 1997 → Sep 26 1997

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.311943

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Cite this

@article{e08c10955fad4359809f113a8aab430f,

title = "Coherent ultraviolet generated by wavepackets interacting with χ(3) In Rb and K atoms",

abstract = "Wavepackets formed from the ns and (n-2)d states of Rb and K (n = 8 for K, 11 and 12 for Rb) have been observed by four wave mixing in pump-probe experiments. The temporal behavior of the wavepacket is observed by monitoring the coherent ultraviolet radiation generated near the alkali mp 2P → 2S1/2 resonance transitions (7 ≤ m ≤ 12 for Rb) when a ∼100 fs, red probe pulse (λ ∼620 nm) is scattered by the wavepacket established by an earlier (identical) pump pulse. The spatial and spectral characteristics of the ultraviolet emission are well-described by axially phase-matched, four wave mixing and all of the prominent frequency components of the wavepackets are associated with energy differences between pairs of excited states for which Δl = 0 or 2. These results demonstrate that the wavepacket modulates χ(3) of the medium, thus rendering the wavepacket detectable.",

author = "J. Gao and Tran, {H. C.} and John, {P. C.} and Eden, {J. G.}",

year = "1997",

doi = "10.1117/12.311943",

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pages = "214--222",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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publisher = "SPIE",

note = "International Conference on Atomic and Molecular Pulsed Lasers II ; Conference date: 22-09-1997 Through 26-09-1997",

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TY - JOUR

T1 - Coherent ultraviolet generated by wavepackets interacting with χ(3) In Rb and K atoms

AU - Gao, J.

AU - Tran, H. C.

AU - John, P. C.

AU - Eden, J. G.

PY - 1997

Y1 - 1997

N2 - Wavepackets formed from the ns and (n-2)d states of Rb and K (n = 8 for K, 11 and 12 for Rb) have been observed by four wave mixing in pump-probe experiments. The temporal behavior of the wavepacket is observed by monitoring the coherent ultraviolet radiation generated near the alkali mp 2P → 2S1/2 resonance transitions (7 ≤ m ≤ 12 for Rb) when a ∼100 fs, red probe pulse (λ ∼620 nm) is scattered by the wavepacket established by an earlier (identical) pump pulse. The spatial and spectral characteristics of the ultraviolet emission are well-described by axially phase-matched, four wave mixing and all of the prominent frequency components of the wavepackets are associated with energy differences between pairs of excited states for which Δl = 0 or 2. These results demonstrate that the wavepacket modulates χ(3) of the medium, thus rendering the wavepacket detectable.

AB - Wavepackets formed from the ns and (n-2)d states of Rb and K (n = 8 for K, 11 and 12 for Rb) have been observed by four wave mixing in pump-probe experiments. The temporal behavior of the wavepacket is observed by monitoring the coherent ultraviolet radiation generated near the alkali mp 2P → 2S1/2 resonance transitions (7 ≤ m ≤ 12 for Rb) when a ∼100 fs, red probe pulse (λ ∼620 nm) is scattered by the wavepacket established by an earlier (identical) pump pulse. The spatial and spectral characteristics of the ultraviolet emission are well-described by axially phase-matched, four wave mixing and all of the prominent frequency components of the wavepackets are associated with energy differences between pairs of excited states for which Δl = 0 or 2. These results demonstrate that the wavepacket modulates χ(3) of the medium, thus rendering the wavepacket detectable.

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