A rigorous electrodynamic model for periodic structure formation during UV laser-induced metal atom deposition
✍ Scribed by Andrew C.R. Pipino; George C. Schatz; Richard P. Van Duyne
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 538 KB
- Volume
- 237
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
A model is presented which describes the time and spatial frequency evolution of periodic structures formed during metal atom deposition arising from UV laser-induced photodissociation of organometallics. In addition to the occurrence of rapid growth of spatial frequencies which allow direct coupling of the incident radiation to the surface-plasmon polariton (SPP), a high-wavevector profile component, associated with the interference of counterpropagating SPP waves, also develops with extremely high gain but without feedback. Pump/probe diffraction methods for verifying the predictions and elucidating the surface modification of photodissociation are briefly proposed. Deposition of aluminum by photolysis of (CH3)3A1 at 257 nm is chosen as the model system.