Unstable resonators with a distributed focusing gain
- Resource Type
- Article
- Authors
- Ferguson, Thomas R.
- Source
- Applied Optics; August 1994, Vol. 33 Issue: 24 p5830-5836, 7p
- Subject
- Language
- ISSN
- 1559128X; 21553165
The geometrical optics approximation is used to form a model of axisymmetric unstable resonators having distributed focus, gain, and loss. A tapered reflectivity feedback mirror is included. The rate equations for propagation through the focusing gain medium are derived. A unique grid is found for propagation without interpolation along eigenrays in each direction. Numerical examples show the effects of distributed gain and focus on the axial and transverse intensity distributions.