Theory for a tunable microwave resonator for laser modulation
Abstract
The microwave properties of a CO2-laser modulator device are investigated. The theory is based on the mode expansion and mode matching method for all discontinuities in the transmission line resonator. It turned out that multiple reflexions of the higher order modes have to be taken into account in order to obtain satisfactory agreement between the theoretical and experimental results. By this method equivalent circuits for the coupling sections and the tuning section are developed. The overall behavior of the modulator is described by the well known transmission line theory. The tuning behavior and the coupling coefficient of the reflexion type resonator are derived. The theory shows an excellent agreement with the results obtained by experiment.
- Publication:
-
International Symposium on Electromagnetic Waves
- Pub Date:
- 1981
- Bibcode:
- 1981emw..symp..135P
- Keywords:
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- Carbon Dioxide Lasers;
- Frequency Modulation;
- Microwave Transmission;
- Optical Resonators;
- Tunable Lasers;
- Waveguide Lasers;
- Equivalent Circuits;
- Light Modulation;
- Microwave Circuits;
- Transmission Lines;
- Lasers and Masers