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Amplification and absorption in a positive column He-Se laser tube.

Ristici M., Ristici E., Tivarus M., Badicu I.

Optica Applicata

1999

Vol. 29, nr 3

383-387

Perturbation spectroscopy was used to evidence the amplification and absorption regions ina positive column of He-Se laser tube. An all Pyrex, self-heating laser tube, 60 cm active length, 2 mm ID was used. The total laser power was about 28 mW. The presence of a magnetic field in the metal reservoir shows a significant of the laser power. Three different regions along the laser tube have been investigated. In the reservoir's region a strong absorption has been detected. A possible explanation of this phenomenon is presented.