Theory of laser-stimulated surface process. 2: A generalized-master-equation approach to energy transfer between an IR laser, an aspecties and phonons
Abstract
The time evolution of the vibrational states of an adspecies-surface bone (adbond) excited by IR laser radiation and coupled to phonon modes of the solid is obtained by numerical solution of a generalized master equation. For three levels of a system composed of an atom adsorbed at the end of linear chain, the average adbond energy is seen to have a monotonic and oscillatory component. Under certain resonance conditions, energy is continuously adsorbed by the adbond from both the laser and the phonons. The Markovian approximation is shown to be inappropriate for this case, and a measure of non-Markovian behavior is proposed. Feedback and synergistic effects are discussed.
- Publication:
-
Interim Technical Report Rochester Univ
- Pub Date:
- April 1985
- Bibcode:
- 1985runy.reptR....B
- Keywords:
-
- Adsorption;
- Desorption;
- Energy Transfer;
- Infrared Lasers;
- Markov Processes;
- Phonons;
- Solid Surfaces;
- Amplitudes;
- Approximation;
- Feedback;
- Laser Outputs;
- Oscillations;
- Lasers and Masers