Untersuchung der Eigenschaften der Strahlung eines Lasers ohne äußere Rückkopplung
Version of Record online: 16 MAR 2006
Copyright © 1973 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Annalen der Physik
Volume 484, Issue 2, pages 121–136, 1973
How to Cite
Glas, P. (1973), Untersuchung der Eigenschaften der Strahlung eines Lasers ohne äußere Rückkopplung. Ann. Phys., 484: 121–136. doi: 10.1002/andp.19734840203
- Issue online: 16 MAR 2006
- Version of Record online: 16 MAR 2006
- Manuscript Received: 18 SEP 1972
The following article describes the realization of a laser without any external resonance structure and the behaviour of the emitted radiation.
The experimental setup consits of a discharge tube closed with Brewster windows and the excitation electronics.
The excitation process which brings the atoms to the upper laser level (2 p6 Neon) will not establish any coherence between the atoms.
Space coherence of the radiation has its origin in the correlated behaviour of the radiating atoms.
Theoretical and experimental values of the fringe visibility are in close agreement for a path difference till to 440 cm, if temporal coherence is measured in an MICHELSON experiment. Interference fringes result if the radiation emerging from both sides of the tube is superimposed. The contrast decreases rapidly with the number of radiation pulses producing the interference pattern.