MANY ELEMENT LASERS.
Abstract
Theoretical and experimental results are reported, obtained with a solid-state laser consisting of many active elements in series. A statistical treatment is developed to derive the oscillation conditions. Asymptotic expressions are given of the threshold gain per unit length holding either for a very large number of elements or for inner surface reflectivities close to 1. It turns out that lossless reflections at the inner surfaces can increase the cavity Q with respect to a one-element laser of the same active length. Preliminary experiments with five and ten-elements lasers demonstrate the mode selection property of the many element laser and show the tendency of the system to a 'quasi-continuous' emission. The possibility of obtaining some optical correction of the defects inherent in the solid material was also demonstrated. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1964
- Accession Number
- AD0603968
Entities
People
- G. Toraldo Di Francia
- L. Ronchi
- R. Pratesi
Organizations
- University of Florence