Enhanced stimulated raman scattering of solvent due to anharmonic energy transfer from resonance raman solute molecules
Abstract
A new nonlinear optical process, named enhanced stimulated Raman scattering (ESRS), is reported for the first time from resonance Raman in β-carotene-methanol solution. It is well known that absorption decreases the efficiency of the nonlinear optical and laser processes; however, we observed enhanced stimulated Raman peaks at the first and second Stokes from methanol solvent at 2834 cm−1 with the addition of β-carotene solutes. This enhanced SRS effect in methanol is attributed to the resonance Raman (RR) process in β-carotene, which creates a significant number of vibrations from RR and the excess vibrations are transferred to methanol from anharmonic vibrational interactions between the β-carotene solutes and the methanol solvent, and consequently leads to the increased Raman gain.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 08, 2020
- Source ID
- 10.1364/oe.395406
Entities
People
- Daniel Nolan
- George Harvey
- Jeff Secor
- Kerr Yoo
- Lingyan Shi
- Pavel Shumyatsky
- Robert Alfano
- Taposh Gayen
- Thomas Harvey
- Yury Budansky
Organizations
- Army Research Office
- Corning Inc.
- National Institutes of Health
- University of California, San Diego