Off-axis coherently pumped laser
Abstract
A coherently optically pumped laser system is described. A pump laser beam propagates through a laser medium contained in a degenerate cavity resonator in a controlled multiple round trip fashion in such a way that the unused pump beam emerges from an injection aperture at a different angle from which it enters the resonator. The pump beam is angularly injected off of the central axis of the resonator body whereupon the pump beam alternately undergoes spreading and focusing while pumping the laser medium by a process of resonant absorption. The emergent pump beam can also be used as a second pump beam source by being reinjected back into the cavity or it can be used for pumping another laser.
- Publication:
-
National Aeronautics and Space Administration Report
- Pub Date:
- May 1984
- Bibcode:
- 1984nasa.reptV....K
- Keywords:
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- Beams (Radiation);
- Cavity Resonators;
- Coherent Electromagnetic Radiation;
- Lasers;
- Optical Pumping;
- Laser Outputs;
- Laser Pumping;
- Patents;
- Stimulated Emission;
- Thermal Blooming;
- Lasers and Masers