Suppression of the mode-interference noise in the He-Ne laser
Abstract
An experimental setup for the suppression of mode-interference noise (beat frequencies between modes in lasers with more than one mode) by the application of a dc magnetic field is described. A two-mode laser is used. Application of a 0.055-0.072 Tesla field produces the maximum (80%) reduction in noise; it does this by lowering the amplitude of one mode and raising the amplitude of the other, thus suppressing the beat frequency between them.
- Publication:
-
Optical and Quantum Electronics
- Pub Date:
- July 1975
- Bibcode:
- 1975OptQE...7..331A
- Keywords:
-
- Electromagnetic Interference;
- Helium-Neon Lasers;
- Laser Modes;
- Noise Reduction;
- Beat Frequencies;
- Laser Applications;
- Magnetic Fields;
- Optical Heterodyning;
- Lasers and Masers