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Interferometry of resonator modes in submillimeter wave lasers
P Schwaller1, H Steffen, J F Moser
1Laboratorium für Festkörperphysikder Eidgenössischen Technischen Hochschule, Zürich, Switzerland.
Applied Optics
|January 9, 2010
Summary
Submillimeter wave gas lasers with low Fresnel numbers were studied using laser resonator interferometry. Experimental data validated theoretical predictions for resonator modes and mirror tilt effects on laser emission intensity.
Area of Science:
- Physics
- Laser Technology
- Optics
Background:
- Submillimeter wave gas lasers exhibit unique properties like low Fresnel numbers and narrow gain widths.
- These characteristics enable interferometry of laser emissions and resonator modes within the laser cavity.
Purpose of the Study:
- To compare experimental data with the Bergstein and Schachter theory for modes in low Fresnel number resonators.
- To investigate the impact of resonator mirror tilt on laser emission intensity across different modes.
Main Methods:
- Utilized laser resonator interferometry to analyze submillimeter wave gas laser emissions.
- Performed experimental measurements of laser emission intensity as a function of resonator mirror tilt for various modes.
Main Results:
- Experimental data aligned with the Bergstein and Schachter theoretical model for resonator modes.
- Quantified the influence of resonator mirror tilt on the intensity of different laser emission modes.
Conclusions:
- The study validates theoretical models for low Fresnel number resonators using experimental interferometry.
- Demonstrated the practical method of laser resonator interferometry for characterizing laser modes and mirror effects.
