Suppression and shifting of odd-photon resonant excitations and stimulated hyper-Raman emissions

Conference · Tue Jan 01 04:00:00 EST 1991

OSTI ID:5998291

Garrett, W R; Payne, M G

When a principal atomic transition (dipole allowed from the ground state) is driven by odd-multi-photon excitation or by stimulated hyper-Raman scattering, a nonlinear multi-wave mixing field is generated at the transition frequency. A number of dramatic effects on such odd-photon mediated processes can ensue as a result of the internally generated wave-mixing fields. Excellent agreement between theory and experimental studies in Xe and in metal vapors is illustrated for a number of predicted effects including: suppression and strong shifting of resonance lines and hyper-Raman emissions under single and multi-laser excitation. We illustrate the dependence of the interference-related effects on pressure, oscillator strength, wavelength combination and relative propagation directions of pump laser beams. Contrary to most other nonlinear effects, we show that none of the features (in the semi-classical regime) depends on the intensity of the driving laser field.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5998291
• Report Number(s): CONF-920124-4; ON: DE92005116
• Country of Publication: United States
• Language: English

Related Subjects

664100 -- Theory of Electronic Structure of Atoms & Molecules-- (1992-)
664400* -- Experimentally Derived Information on Atomic & Molecular Properties-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
FREQUENCY MIXING
GASES
IONIZATION
LASER RADIATION
MATRIX ELEMENTS
MULTI-PHOTON PROCESSES
NONMETALS
OSCILLATOR STRENGTHS
PHOTOIONIZATION
PRESSURE DEPENDENCE
RADIATIONS
RAMAN EFFECT
RARE GASES
XENON