Saturated Two-Photon Resonance Ionization ofHe(2S1)

1975 ◽  
Vol 35 (2) ◽  
pp. 82-85 ◽  
Author(s):  
G. S. Hurst ◽  
M. G. Payne ◽  
M. H. Nayfeh ◽  
J. P. Judish ◽  
E. B. Wagner
Keyword(s):  
Resonance Ionization ◽  
Two Photon ◽  
Photon Resonance

scholarly journals Laser-induced plasmas in metal vapors

1989 ◽  
Vol 7 (3) ◽  
pp. 545-550 ◽  
Author(s):  
J. T. Bahns ◽  
M. Koch ◽  
W. C. Stwalley
Keyword(s):  
Low Power ◽  
Dye Laser ◽  
Experimental Results ◽  
Resonance Ionization ◽  
Dye Lasers ◽  
High Electron ◽  
Two Photon ◽  
Cw Laser ◽  
Metal Vapors ◽  
Photon Resonance

Strong ionization in metal vapors is known to be very readily produced by a variety of pulsed and CW lasers. Particularly well known is ‘resonance’ ionization by pulsed or CW dye lasers operated at the atomic resonance lines (e.g. Na 3s → 3p). We also have experimental results for two other forms of ionization: ‘quasiresonant’ ionization using a CW dye laser (e.g. at the Na 3p → 4d transitions), and ‘two-photon resonance’ ionization using a pulsed dye laser (e.g. at the Na 3s → 4d two-photon resonances). Both new forms are visually characterized by bright ‘white sparks’ and correspond to reasonably high electron densities of ∼1014−1015 cm3 and low electron temperatures of ∼0·1−0·2 eV. The ‘quasiresonant’ ionization is remarkable in that it occurs even with a very low power 1 mW focused CW laser in 10 torr of Na. A variety of interesting atomic and molecular spectroscopic features have been observed and analyzed.

Influence of atomic motion on the shape of two-photon resonance in gas

JETP Letters ◽  
2000 ◽  
Vol 72 (3) ◽  
pp. 119-122 ◽  
Author(s):  
A. V. Taichenachev ◽  
A. M. Tumaikin ◽  
V. I. Yudin
Keyword(s):  
Atomic Motion ◽  
Two Photon ◽  
Photon Resonance
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