Title :
Learning how to control vibrations in multimode molecules
Author :
Weinacht, T.C. ; White, J.L. ; Bucksbaum, P.H.
Author_Institution :
Michigan Univ., Ann Arbor, MI, USA
Abstract :
Summary form only given. We have constructed an automated learning machine to study complex quantum systems. We have used this machine to learn how to selectively excite vibrational modes in a multimode molecule. By using a genetic algorithm to guide a computer controlled optical pulse shaper, we were able to discover what pulse shape would excite a single, selected C-H stretch mode in liquid methanol. The vibrations were excited through stimulated Raman scattering with an intense, shaped, ultrafast laser pulse and they were detected by spectrally analyzing the forward scattered radiation.
Keywords :
optical pulse shaping; stimulated Raman scattering; vibrational states; automated learning machine; complex quantum systems; computer controlled optical pulse shaper; forward scattered radiation; genetic algorithm; intense shaped ultrafast laser pulse; liquid methanol; multimode molecules; selected C-H stretch mode; selectively excite; stimulated Raman scattering; vibration control; vibrational modes; Automatic control; Genetic algorithms; Laser excitation; Machine learning; Optical computing; Optical control; Optical pulse shaping; Raman scattering; Shape control; Vibration control;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2000. (QELS 2000). Technical Digest
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-608-7
