Lasing on the D lines of sodium pumped by free→free transitions of Na-Xe collision pairs

J. D. Hewitt; J. G. Eden

doi:10.1063/1.4769456

Lasing on the D lines of sodium pumped by free→free transitions of Na-Xe collision pairs

J. D. Hewitt, J. G. Eden

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Lasing on the D₁ and D₂ lines of Na (589.6 and 589.0nm, respectively) has been generated simultaneously by photoexciting free→free transitions of thermal Na-Xe collision pairs. Pumping the blue satellite of the Na D₂ line in Na/Xe mixtures (λ≈560nm) selectively interacts with Na-Xe pairs having an instantaneous internuclear separation of ∼5Å and culminates in the population of both Na (3 ²P_J) fine structure levels. The spectral width of the laser excitation spectrum is 1.3nm (centered at 560.1nm) and the 3 ²P_3/2→3²S_1/2 (D₂) laser linewidth was measured to be 9.2±0.6GHz, which is consistent with a coefficient of 18.4MHz/Torr for broadening of the D₂ 589.0nm transition by Xe.

Original language	English (US)
Article number	241109
Journal	Applied Physics Letters
Volume	101
Issue number	24
DOIs	https://doi.org/10.1063/1.4769456
State	Published - Dec 10 2012

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Physics and Astronomy (miscellaneous)

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10.1063/1.4769456

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title = "Lasing on the D lines of sodium pumped by free→free transitions of Na-Xe collision pairs",

abstract = "Lasing on the D1 and D2 lines of Na (589.6 and 589.0nm, respectively) has been generated simultaneously by photoexciting free→free transitions of thermal Na-Xe collision pairs. Pumping the blue satellite of the Na D2 line in Na/Xe mixtures (λ≈560nm) selectively interacts with Na-Xe pairs having an instantaneous internuclear separation of ∼5{\AA} and culminates in the population of both Na (3 2PJ) fine structure levels. The spectral width of the laser excitation spectrum is 1.3nm (centered at 560.1nm) and the 3 2P3/2→32S1/2 (D2) laser linewidth was measured to be 9.2±0.6GHz, which is consistent with a coefficient of 18.4MHz/Torr for broadening of the D2 589.0nm transition by Xe.",

author = "Hewitt, {J. D.} and Eden, {J. G.}",

note = "Funding Information: Interesting and valuable discussions with G. Swenson and D. Carroll, and the technical assistance of K. Raymond and E. Coxsey are gratefully acknowledged. This work was supported by the U. S. Air Force Office of Scientific Research (H. R. Schlossberg) under Grant Nos. FA9550-10-1-0048 and FA9550-10-1-0456 and the DOD High Energy Laser Joint Technology Office (HEL-JTO) under grant no. FA9550-09-1-0575. ",

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doi = "10.1063/1.4769456",

language = "English (US)",

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AU - Hewitt, J. D.

AU - Eden, J. G.

N1 - Funding Information: Interesting and valuable discussions with G. Swenson and D. Carroll, and the technical assistance of K. Raymond and E. Coxsey are gratefully acknowledged. This work was supported by the U. S. Air Force Office of Scientific Research (H. R. Schlossberg) under Grant Nos. FA9550-10-1-0048 and FA9550-10-1-0456 and the DOD High Energy Laser Joint Technology Office (HEL-JTO) under grant no. FA9550-09-1-0575.

PY - 2012/12/10

Y1 - 2012/12/10

N2 - Lasing on the D1 and D2 lines of Na (589.6 and 589.0nm, respectively) has been generated simultaneously by photoexciting free→free transitions of thermal Na-Xe collision pairs. Pumping the blue satellite of the Na D2 line in Na/Xe mixtures (λ≈560nm) selectively interacts with Na-Xe pairs having an instantaneous internuclear separation of ∼5Å and culminates in the population of both Na (3 2PJ) fine structure levels. The spectral width of the laser excitation spectrum is 1.3nm (centered at 560.1nm) and the 3 2P3/2→32S1/2 (D2) laser linewidth was measured to be 9.2±0.6GHz, which is consistent with a coefficient of 18.4MHz/Torr for broadening of the D2 589.0nm transition by Xe.

AB - Lasing on the D1 and D2 lines of Na (589.6 and 589.0nm, respectively) has been generated simultaneously by photoexciting free→free transitions of thermal Na-Xe collision pairs. Pumping the blue satellite of the Na D2 line in Na/Xe mixtures (λ≈560nm) selectively interacts with Na-Xe pairs having an instantaneous internuclear separation of ∼5Å and culminates in the population of both Na (3 2PJ) fine structure levels. The spectral width of the laser excitation spectrum is 1.3nm (centered at 560.1nm) and the 3 2P3/2→32S1/2 (D2) laser linewidth was measured to be 9.2±0.6GHz, which is consistent with a coefficient of 18.4MHz/Torr for broadening of the D2 589.0nm transition by Xe.

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Lasing on the D lines of sodium pumped by free→free transitions of Na-Xe collision pairs

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