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Dreischuh, A; Reiter-Domiaty, U; Gruber, D; Windholz, L; Dinev, S.
Nonlinear alignment between conical emissions generated in a four-wave parametric mixing process
APPL PHYS B-LASERS O. 1998; 66(2): 175-180. Doi: 10.1007/s003400050372
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Co-authors Med Uni Graz: Reiter Ursula
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Abstract:: The dependence of the yellow conical emission angle on pump laser intensity is studied experimentally in dense Na vapor under near-resonant one-photon excitation of the sodium 4(2)P levels. A numerical model developed to describe mechanisms involved in the conical emission generation processes indicates that the saturation observed is due to the opposite angular tuning of the near-infrared and yellow conical emission generated in the same process. The mechanisms responsible are assigned to (self)induced phase modulation processes of the waves involved.