The influence of time-of-flight effects on the nonlinear resonance characteristics of ring lasers
Abstract
The nonlinear resonance characteristics of ring lasers are investigated theoretically in the absorbing gas pressure range where the time-of-flight mechanism of absorption line broadening is significant. An analysis of lasing equations with allowance for time-of-flight effects shows that in the region of low pressures of the absorbing gas, the behavior of resonance characteristics as a function of pressure differs from that predicted by a phenomenological theory. This result is ascribed to the anomalous contribution of slow molecules to the nonlinear medium polarizability. Formulas are obtained for the shift of the nonlinear resonance maximum relative to the center of the absorption line caused by the curvature of the wavefronts of counterpropagating waves.
- Publication:
-
Kvantovaia Elektronika Moscow
- Pub Date:
- 1984
- Bibcode:
- 1984KvanE....Q...3D
- Keywords:
-
- Frequency Stability;
- Laser Stability;
- Nonlinear Optics;
- Optical Resonators;
- Pressure Broadening;
- Ring Lasers;
- Absorption Spectra;
- Frequency Shift;
- Frequency Standards;
- Gas Lasers;
- Molecular Interactions;
- Polarization (Waves);
- Lasers and Masers