Unstable resonator for lasers operating on weakly amplifying media
Abstract
The problem of achieving a more compact structure of the output aperture of the oscillator for a laser operating on a weakly amplifying medium is discussed for the case when the laser is used in conjunction with an external shaping telescope. It is proposed that for the two lenses the common part have the shape of a logarithmic spiral. This technique makes it possible to achieve compact shape of the output aperture for arbitrarily small radiation losses by suitable choice of the angle of rotation.
- Publication:
-
Pisma v Zhurnal Tekhnischeskoi Fiziki
- Pub Date:
- April 1978
- Bibcode:
- 1978PZhTF...4..372A
- Keywords:
-
- Laser Outputs;
- Light Amplifiers;
- Optical Resonators;
- Cross Sections;
- Lens Design;
- Mirrors;
- Telescopes;
- Lasers and Masers