Two-photon time-resolved optogalvanic signals of neon

In this work, temporal evolution of two-photon laser optogalvanic signals of neon has been studied. Optogalvanic signals for four transitions from the metastable 2p 53s[3/2] 2 state to 2p 54d′[3/2] 1, 2p 54d′[3/2] 2, 2p 54d′[5/2] 3 and 2p 54d′[5/2] 2 states were recorded over a range of discharge cu...

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Bibliographic Details
Published in:Optics communications 2009-12, Vol.282 (23), p.4552-4555
Main Authors: Omidyan, R., Farrokhpour, H., Tabrizchi, M.
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Atomic properties and interactions with photons
Atomic spectra
Biological and medical applications
Dye laser
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Laser spectroscopy
Nd:YAG laser
Optics
Optogalvanic spectroscopy
Physics
Time-resolved optogalvanic signal
Two-photon transition
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Summary:In this work, temporal evolution of two-photon laser optogalvanic signals of neon has been studied. Optogalvanic signals for four transitions from the metastable 2p 53s[3/2] 2 state to 2p 54d′[3/2] 1, 2p 54d′[3/2] 2, 2p 54d′[5/2] 3 and 2p 54d′[5/2] 2 states were recorded over a range of discharge currents (3.4–9 mA). It was found that the shape of the optogalvanic signal was strongly dependent on the discharge current so that its peak shifted to shorter times and its amplitude increased with the discharge current. The decay rates of the 4d states, calculated from the optogalvanic signals, were found to increase linearly with the discharge current in the range of 6.2–9 mA. However, for the range of 3.4–5.4 mA, the decay rates were observed to slightly decrease with the discharge current.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2009.08.044