A ring laser with orthogonally polarized counterpropagating waves
Abstract
An investigation of the polarization-frequency characteristics of a ring laser are presented. A Faraday element is placed between two intersecting plates in the isotropic cavity of the laser. The study shows, that if one of the generated modes is located near the central frequency of the gain contour, the linearly polarized radiation propagates in each direction of the cavity ring, independent of the number of simultaneously generated modes. By removing the mode from the central frequency and by placing modes in a symmetrical position with respect to the central frequency, another polarization-frequency regime is realized: modes located along both sizes of the central frequency are linearly and inter-orthogonally polarized. Polarization of the corresponding modes in the opposite direction remains inter-orthogonal, independently of radiation-frequency difference.
- Publication:
-
Zhurnal Prikladnoi Spektroskopii
- Pub Date:
- September 1981
- Bibcode:
- 1981ZhPS...35..425S
- Keywords:
-
- Helium-Neon Lasers;
- Laser Modes;
- Optical Heterodyning;
- Polarized Light;
- Ring Lasers;
- Wave Propagation;
- Faraday Effect;
- Laser Cavities;
- Linear Polarization;
- Orthogonality;
- Lasers and Masers