Three Photon Ionization of Alkali Atoms at the Ruby Laser Wavelength

1975 ◽  
Vol 53 (16) ◽  
pp. 1573-1578 ◽  
Author(s):  
M. R. Cervenan ◽  
R. H. C. Chan ◽  
N. R. Isenor
Keyword(s):  
Laser Radiation ◽  
Circular Polarization ◽  
Linear Polarization ◽  
Atomic Beam ◽  
Ruby Laser ◽  
Single Mode ◽  
Laser Wavelength ◽  
Photon Flux ◽  
Alkali Atoms ◽  
Photon Ionization

Single mode ruby laser radiation (694 nm) and an atomic beam apparatus have been used in the study of the three photon ionization of Na, K, Rb, and Cs atoms. The process in all cases is nonresonant, the observations being consistent with a rate given by W3F3 where F is the photon flux. The values obtained for W3l (linear polarization) and W3C (circular polarization) and the ratio W3c/W3l are discussed in relation to recently calculated results and the few other experimental results available. Discrepancies well beyond the assigned errors exist between experimental and calculated results.

Multiphoton ionization of Li at the ruby laser wavelength

1979 ◽  
Vol 57 (10) ◽  
pp. 1770-1774 ◽  
Author(s):  
G. Wagner ◽  
N. R. Isenor
Keyword(s):  
Laser Radiation ◽  
Atomic Beam ◽  
Ruby Laser ◽  
Multiphoton Ionization ◽  
Polarized Light ◽  
Single Mode ◽  
Laser Wavelength ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Photon Process

Ionization of Li resulting from the interaction of pulsed single-mode (λ = 694.60 ± 0.05 nm, TEM00) ruby laser radiation with an atomic beam was observed. The results can be interpreted in terms of a four-photon process with three-photon resonances with levels in the vicinity of the 19P and 20P Rydberg levels of the unperturbed atom. Both linearly and circularly polarized light were used. The results are compared with the calculated results of others.

Erratum: Three photon ionization of alkali atoms at the ruby laser wavelength

1976 ◽  
Vol 54 (6) ◽  
pp. 728-728
Author(s):  
M. R. Cervenan ◽  
R. H. C. Chan ◽  
N. R. Isenor
Keyword(s):  
Ruby Laser ◽  
Laser Wavelength ◽  
Alkali Atoms ◽  
Photon Ionization

Formation and dissociation of by ruby laser radiation

1983 ◽  
Vol 61 (1) ◽  
pp. 40-43 ◽  
Author(s):  
G. Wagner ◽  
N. R. Isenor
Keyword(s):  
Laser Radiation ◽  
Dissociation Energy ◽  
Atomic Beam ◽  
Ruby Laser ◽  
Time Of Flight ◽  
Laser Polarization ◽  
Axis Orientation

The formation and dissociation of [Formula: see text] in an atomic beam by ruby laser radiation have been observed. Values of the dissociation energy of [Formula: see text] have been determined by the time of flight of the resulting Na+ ions and the potential needed to stop them. These results, with a mean of 1.02 ± 0.09 eV, have been compared with the calculated and observed values of others. The effects of laser polarization vs. dimer axis orientation have been clearly demonstrated.

Three photon ionization of alkali atoms at the ruby laser frequency

1976 ◽  
Vol 58 (4) ◽  
pp. 223-225 ◽  
Author(s):  
G. Laplanche ◽  
Y. Flank ◽  
M. Jaouen ◽  
A. Rachman
Keyword(s):  
Ruby Laser ◽  
Laser Frequency ◽  
Alkali Atoms ◽  
Photon Ionization

BOLOMETRIC MEASURER OF LINEAR POLARIZATION OF LASER RADIATION

2013 ◽  
Vol 72 (15) ◽  
pp. 1423-1429
Author(s):  
S. V. Pogorelov ◽  
B. V. Safronov ◽  
V. P. Balkashin ◽  
I. A. Priz ◽  
I. V. Krasovskyy
Keyword(s):  
Laser Radiation ◽  
Linear Polarization

scholarly journals Broadband Linear Polarization in Ap Stars

1993 ◽  
Vol 138 ◽  
pp. 305-309
Author(s):  
Marco Landolfi ◽  
Egidio Landi Degl’Innocenti ◽  
Maurizio Landi Degl’Innocenti ◽  
Jean-Louis Leroy ◽  
Stefano Bagnulo
Keyword(s):  
Magnetic Field ◽  
Circular Polarization ◽  
Linear Polarization ◽  
Rotation Axis ◽  
Spectral Lines ◽  
Line Of Sight ◽  
Long Time ◽  
Rotating Star ◽  
Ap Stars ◽  
The Magnetic Field

AbstractBroadband linear polarization in the spectra of Ap stars is believed to be due to differential saturation between σ and π Zeeman components in spectral lines. This mechanism has been known for a long time to be the main agent of a similar phenomenon observed in sunspots. Since this phenomenon has been carefully calibrated in the solar case, it can be confidently used to deduce the magnetic field of Ap stars.Given the magnetic configuration of a rotating star, it is possible to deduce the broadband polarization at any phase. Calculations performed for the oblique dipole model show that the resulting polarization diagrams are very sensitive to the values of i (the angle between the rotation axis and the line of sight) and β (the angle between the rotation and magnetic axes). The dependence on i and β is such that the four-fold ambiguity typical of the circular polarization observations ((i,β), (β,i), (π-i,π-β), (π-β,π-i)) can be removed.

Ruby Laser Induced Changes in the Absorption Spectra of Sodium Decorated Sodium Chloride Crystals

1970 ◽  
Vol 25 (2) ◽  
pp. 229-236
Author(s):  
H. Kuzmany
Keyword(s):  
Absorption Spectra ◽  
Ruby Laser ◽  
Laser Light ◽  
Temperature Treatment ◽  
Laser Wavelength ◽  
Beam Path ◽  
General Increase ◽  
Annealing Conditions ◽  
Different Depths ◽  
Induced Changes

Abstract The effects of intense Q-switched ruby laser light on the absorption spectra of NaCl crystals, additively coloured by colloidal sodium were investigated at different depths along the laser beam path as well as after being subjected to different annealing conditions. A strong general increase in absorption was observed in the region where the laser light entered the crystal, while a strong decrease in absorption occurred in the colloid band, especially around the laser wavelength. This bleaching was accompanied by the generation of a new absorption band at ~ 1200 nm (~1.0eV) in the infrared, which, according to its sensitivty to temperature treatment, is not of colloidal origin, The energy denisty necessary for its generation was found to be about 400mJ/cm2. Its is suggested that the bleaching of the colloid band could be used for the storage of holograms.

Direct excitation of potassium diffuse bands by single mode laser radiation

1986 ◽  
Vol 2 (3) ◽  
pp. 233-238 ◽  
Author(s):  
?. Vadla ◽  
K. Niemax ◽  
G. Pichler
Keyword(s):  
Laser Radiation ◽  
Single Mode ◽  
Mode Laser ◽  
Single Mode Laser ◽  
Direct Excitation
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