Analysis of a Cylindrical Laser Resonator Having a Zoned Output Mirror
Abstract
A theoretical analysis was performed on a zoned resonator to determine whether both resonator feedback and a focused output could be achieved with a single optical element. It was found that under certain conditions that well-defined modes do exist and that a focused output could be obtained. The resonator was formed by two parallel mirrors (circular, plane, and equal sized) symmetrically placed about a common axis. One mirror had a uniform reflectivity of unity. The other mirror was zoned. It consisted of alternately transmitting and totally reflecting concentric zones. The reflecting zones provided the resonator feedback and the transmitting zones provided the output coupling. The transmission zones were arranged in a manner similar to the transmission zones on a Freznel zone plate. Thus, the zoned mirror tended to focus the field coupled out of the resonator.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 16, 1970
- Accession Number
- AD0714981
Entities
People
- George A. Emmons