TY - JOUR
T1 - Optical Stark shifts of Raman gain spectra in polydiacetylene
AU - Halle, S. D.
AU - Yoshizawa, M.
AU - Matsuda, H.
AU - Okada, S.
AU - Nakanishi, H.
AU - Kobayashi, T.
PY - 1994/5
Y1 - 1994/5
N2 - We report that the stimulated Raman gain signals of a single-crystal polydiacetylene with the side groups2, 5-bis-trifluoromethyl-phenyl, PDA-DFMP, exhibit an optical Stark shift of ==50 cm-1. Using an ultrashort, near-resonant high-intensity laser, we find that te intensity-dependent signal shifts to higher probe photonenergies for both the C=C- and C=C-stretching modes. Semiquantitative agreement between the dataand a three-level-system density-matrix calculation is achieved with a nonlinear-optical mechanism in whicha pump-laser field is optically coupled to both the exciton ← zero-phonon ground-state and the excit←ononephonon ground-state transitions.
AB - We report that the stimulated Raman gain signals of a single-crystal polydiacetylene with the side groups2, 5-bis-trifluoromethyl-phenyl, PDA-DFMP, exhibit an optical Stark shift of ==50 cm-1. Using an ultrashort, near-resonant high-intensity laser, we find that te intensity-dependent signal shifts to higher probe photonenergies for both the C=C- and C=C-stretching modes. Semiquantitative agreement between the dataand a three-level-system density-matrix calculation is achieved with a nonlinear-optical mechanism in whicha pump-laser field is optically coupled to both the exciton ← zero-phonon ground-state and the excit←ononephonon ground-state transitions.
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U2 - 10.1364/JOSAB.11.000731
DO - 10.1364/JOSAB.11.000731
M3 - Article
AN - SCOPUS:84975647185
VL - 11
SP - 731
EP - 736
JO - Journal of the Optical Society of America B: Optical Physics
JF - Journal of the Optical Society of America B: Optical Physics
SN - 0740-3224
IS - 5
ER -