Abstract
Rhodamine 6G doped poly(methyl methacrylate) thin films were prepared on glass substrates. Tuneable distributed feedback (DFB) lasing output in a reflection grating geometry was realized in the films. Pure gain coupling and an additional index coupling were created in the films by the two crossing pump beams. Under low pump energy, a permanent gain modulation caused by dye bleaching was generated. An index modulation of the medium caused by photodamage was induced at higher pump energy. Dualpeak DFB lasing emission indicative of the existence of the index grating was observed under these conditions.
| Original language | English |
|---|---|
| Pages (from-to) | 1415-1418 |
| Number of pages | 4 |
| Journal | Optical Materials |
| Volume | 34 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Jun 2012 |
| Externally published | Yes |
Keywords
- Distributed feedback
- Dye laser
- Polymer film
- Reflection grating
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- General Computer Science
- Atomic and Molecular Physics, and Optics
- Spectroscopy
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry
- Electrical and Electronic Engineering