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.

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.

Resonance-enhanced multiphoton ionization with circularly polarized light: chiral carbonyls

2013 ◽  
Vol 405 (22) ◽  
pp. 6913-6924 ◽  
Author(s):  
Ulrich Boesl ◽  
Alexander Bornschlegl ◽  
Christoph Logé ◽  
Katharina Titze
Keyword(s):  
Multiphoton Ionization ◽  
Polarized Light ◽  
Circularly Polarized Light ◽  
Circularly Polarized

Preparation of Chiral Polydiacetylene Films by Using Three-Photon Polymerization

2016 ◽  
Vol 16 (4) ◽  
pp. 3394-3397 ◽  
Author(s):  
Takaaki Manaka ◽  
Mitsumasa Iwamoto
Keyword(s):  
Laser Power ◽  
Polarized Light ◽  
Laser Wavelength ◽  
Polymerization Rate ◽  
Power Dependence ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Photo Polymerization ◽  
Left And Right ◽  
Asymmetric Polymerization

Asymmetric polymerization of polydiacetylene (PDA) from commercially available achiral derivative of diacetylene monomer using circularly polarized pulse laser is demonstrated. Chiral source was only circularly polarized laser, and irradiation of left- and right-circularly polarized light effectively promoted the polymerization of chiral PDAs with opposite handedness. Difference between the laser wavelength and the absorption peak of monomer suggested the contribution of the multiphoton excitation to the photo-polymerization. Laser power dependence of the polymerization rate indicated the possibility of three-photon polymerization.

Suppression of multiphoton ionization with circularly polarized light

1986 ◽  
Author(s):  
T. J. McIlrath ◽  
P. H. Bucksbaum ◽  
M. Bashkansky ◽  
R. R. Freeman ◽  
L. F. DiMauro
Keyword(s):  
Multiphoton Ionization ◽  
Polarized Light ◽  
Circularly Polarized Light ◽  
Circularly Polarized

Differential polarization imaging of sickled cells

1988 ◽  
Vol 46 ◽  
pp. 62-63
Author(s):  
Marcos F. Maestre
Keyword(s):  
Optical Properties ◽  
Theoretical Approach ◽  
Polarized Light ◽  
Polarization Microscopy ◽  
Spectroscopic Techniques ◽  
Polarization Imaging ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Microscopic Scale ◽  
Chiral Structures

Recently we have developed a form of polarization microscopy that forms images using optical properties that have previously been limited to macroscopic samples. This has given us a new window into the distribution of structure on a microscopic scale. We have coined the name differential polarization microscopy to identify the images obtained that are due to certain polarization dependent effects. Differential polarization microscopy has its origins in various spectroscopic techniques that have been used to study longer range structures in solution as well as solids. The differential scattering of circularly polarized light has been shown to be dependent on the long range chiral order, both theoretically and experimentally. The same theoretical approach was used to show that images due to differential scattering of circularly polarized light will give images dependent on chiral structures. With large helices (greater than the wavelength of light) the pitch and radius of the helix could be measured directly from these images.

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