TY - JOUR
T1 - Picosecond vibrational cooling in mixed molecular crystals studied with a new coherent raman scattering technique
AU - Chang, Ta Chau
AU - Dlott, Dana D.
N1 - Funding Information:
* Research supported entirely by the National Science Foundation, Division of Materials Research, Solid State Chemistry program through grant NSF DMR 84-15070. I To whom correspondence should be addressed. 2 On leave until June 1,1988 at Department of Chemistry, Stanford University, Stanford, CA 94305, USA.
PY - 1988/5/27
Y1 - 1988/5/27
N2 - We demonstrate the pump-induced coherent Stokes Raman scattering (CSRS) technique by measuring vibrational cooling in low temperature crystals of pentacene in naphthalene following excitation of a vibration 747 cm-1 above the S1 origin. Using picosecond photon echoes and a two-color pump-probe technique, we find that the initial state decays in 33 ps, and reappears at the origin 25 ps later. We show that pump-induced CSRS simultaneously measures the decay from the initial state and reappearance at the origin. This technique has many of the advantages of conventional coherent Raman (e.g. intense coherent signals), but is a direct measure of the population dynamics in the initial and final states.
AB - We demonstrate the pump-induced coherent Stokes Raman scattering (CSRS) technique by measuring vibrational cooling in low temperature crystals of pentacene in naphthalene following excitation of a vibration 747 cm-1 above the S1 origin. Using picosecond photon echoes and a two-color pump-probe technique, we find that the initial state decays in 33 ps, and reappears at the origin 25 ps later. We show that pump-induced CSRS simultaneously measures the decay from the initial state and reappearance at the origin. This technique has many of the advantages of conventional coherent Raman (e.g. intense coherent signals), but is a direct measure of the population dynamics in the initial and final states.
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U2 - 10.1016/0009-2614(88)80216-1
DO - 10.1016/0009-2614(88)80216-1
M3 - Article
AN - SCOPUS:7444225468
SN - 0009-2614
VL - 147
SP - 18
EP - 24
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1
ER -