RUBY LASER WITH VIBRATING REFLECTOR,
Abstract
It was thought that an effect similar to that caused by the traveling wave laser may be obtained if at least one reflector of the Fabry-Perot cavity is vibrated with sufficient amplitude and frequency. This measure could at least partially smear out a nonuniform distribution of excited states. To prove this out, experiments were performed with a ruby laser with detached reflectors. One reflector was a stationary dielectric mirror with a reflectivity of 0.99, the other reflector provided the frequency sweeping mechanism: it consisted of an X-cut quartz vibrator. It was held at its circumference at three points and its silver coating served as electrode and mirror, with a reflectivity of 0.95. Vibrators with a resonance frequency of 1, 2, or 3 mc were used. They had a diameter of 38 mm and were driven in a thickness extensional mode of vibration. A solar cell with a parallel resistor to increase its frequency range, in combination with an oscilloscope, was used to record the power output of the laser. The total energy output of the laser was measured by observing the loss of charge of a capacitor through a phototube illuminated by the laser beam. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1964
- Accession Number
- AD0612112
Entities
People
- E. A. Gerber
- E. R. Ahlstrom
Organizations
- United States Army Communications-Electronics Command