Title :
Dependence of rotational and vibrational Raman scattering on focusing geometry
Author :
Perrone, M.R. ; Piccinno, V. ; De Nunzio, G. ; Nassisi, V.
Author_Institution :
Dipartimento di Fisica, Lecce Univ., Italy
fDate :
6/1/1997 12:00:00 AM
Abstract :
Stimulated rotational and vibrational Raman scattering in H2 was investigated with a circularly and a linearly polarized XeCl laser beam and the influence of the focusing geometry on the threshold for rotational and vibrational scattering, respectively, was studied. It is shown that with a circularly polarized pump beam a high-angle focusing geometry allows to get only rotational Raman scattering, whereas a low-angle focusing geometry provides only vibrational Raman scattering for gain suppression effects
Keywords :
geometry; hydrogen; laser beams; optical focusing; rotational states; stimulated Raman scattering; vibrational states; H2; XeCl; circularly polarized XeCl laser beam; circularly polarized pump beam; excimer lasers; focusing geometry; gain suppression effects; high-angle focusing geometry; linearly polarized XeCl laser beam; low-angle focusing geometry; rotational Raman scattering; stimulated rotational scattering; vibrational Raman scattering; Geometrical optics; Geometry; Hydrogen; Laser beams; Laser excitation; Optical scattering; Polarization; Pump lasers; Raman scattering; Stimulated emission;
Journal_Title :
Quantum Electronics, IEEE Journal of
