Abstract
Brighter far-field pattern of a phase-locked Nd:YAG microchip laser array was obtained by the Talbot effect in a three-mirror cavity. The laterally coupled Nd:YAG microchip laser array produced a pair of spots with sharper peaks with an angular separation of λ/d in its far-field, where d is the distance between the adjacent sources, indicating an out-of-phase spatial mode coupling was improved. The far-field spot size is reduced by a factor of 9.3 compared with that obtained by incoherent pile of the individual microchip laser outputs. We demonstrated that the far-field pattern is improved by enhancing the self-imaging with side mirrors which make the array source disguise as infinity. A mode selecting slit placed right after the crystal is also effective to stabilize the out-of-phase mode.
| Original language | English |
|---|---|
| Pages (from-to) | 240-247 |
| Number of pages | 8 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 3611 |
| Publication status | Published - 1999 Jan 1 |
| Event | Proceedings of the 1999 Laser Resonators II - San Jose, CA, USA Duration: 1999 Jan 27 → 1999 Jan 29 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering