Time-resolved coherent Raman spectroscopy controlled by spectrally tailored noisy light

✍ Scribed by Michael J. Stimson; Darin J. Ulness; A. C. Albrecht

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 491 KB
• Volume: 28
• Category: Article
• ISSN: 0377-0486
• DOI: 10.1002/(sici)1097-4555(199708)28:8<579::aid-jrs130>3.0.co;2-w

✦ Synopsis

A new type of frequency-and time-resolved coherent Raman scattering (CRS) spectroscopy using broadband non-transform limited noisy light is presented. The noisy light source is designed to have a doubly peaked spectrum, and the signal [ called I(2)CRS(3c) ] is observed to be similarly double peaked with one of the peaks being a new three-color "hybrid.Ï Time resolution of the order of 100 fs is achieved by interferometric manipulation of the noisy light in the sample. Up-conversions and down-conversions of the vibrational transition frequency being studied [ the 655.6 cm-1 vibration of called radiation di †erence oscillations, are observed in the interferometrically CS 2(l) ] , time-resolved coordinate. It is shown how the oscillations and their decay can be explained in terms of spectral "ÐlteringÏ of the noisy light involving the vibrational resonance of the sample.