| Autor: |
Ajay K. Singh, Jakow Konradi, Sisir K. Sarkar, Arnulf Materny, V. K. Vaidyan, V. S. Jayakumar |
| Rok vydání: |
2008 |
| Předmět: |
|
| Zdroj: |
AIP Conference Proceedings. |
| DOI: |
10.1063/1.3046229 |
| Popis: |
Femtosecond time‐resolved coherent anti‐Stokes Raman scattering (fs‐CARS) gives access to ultrafast molecular dynamics. However, femtosecond laser pulses are spectrally broad and therefore coherently excite several molecular modes. While the temporal resolution is high, usually no mode‐selective excitation is possible. This paper demonstrates the feasibility of selectively exciting specific molecular vibrations in solution phase with shaped fs laser excitation using a feedback‐controlled optimization technique guided by an evolutionary algorithm. This approach is also used to obtain molecule‐specific CARS spectra from a mixture of different substances. The optimized phase structures of the fs pulses are characterized to get insight into the control process. Possible applications of the spectrum control are discussed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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