Enhancement of stimulated Raman scattering of a weak vibration mode in tetrahydrofuran through the energy-transfer resonance of lycopene.
Opt Lett
; 48(19): 4977-4980, 2023 Oct 01.
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| ID: mdl-37773364
ABSTRACT
A method of energy-transfer resonance of lycopene used to enhance stimulated Raman scattering (SRS) of a weak vibration C-O mode in tetrahydrofuran (THF) was developed in this study. Only C-H SRS was observed in pure THF at high energies. When lycopene was added, the C-O SRS located at 915â
cm-1 of the weak vibration mode in THF was observed. The maximum SRS enhancement of the C-O mode was achieved when the concentration was 3.72 × 10-6â
mol/L because of the resonance enhancement of the solute, which transferred the excess vibrational energy to the solvent. Moreover, the pulse width compression phenomenon of the C-H vibration in the presence of C-O SRS was obtained.
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Opt Lett
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2023
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Article