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Proceedings Paper

He-Ne laser gain dependence on discharge current and gas pressure from resonant Faraday effect
Author(s): Alina Gearba; C. Negutu; Gabriela Cone; Ion M. Popescu
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Paper Abstract

It is analyzed the influence of a longitudinal magnetic field on the operating mode of a He-Ne laser, knowing that the magnetic field is used for the suppressing of the (lambda) 3.39 micrometers , which is amplified in the same time with (lambda) 632.8 nm. It was used the Faraday magneto-optic effect at resonance, so that eh (lambda) 632.8 nm He-Ne laser radiation travels through a Ne-Ne mixture, with the pressures ratio pHe/pNe equals 5, in population inversion conditions, placed in a longitudinal magnetic field. It was studied the laser medium amplification coefficient dependence on the parameters: discharge current intensity and total gas pressure. For the relation between the rotation angle of the polarization plane in a magnetic field and the laser amplification coefficient, in the He-Ne mixture, it was found a linear theoretical dependence. By fitting the experimental data, there are obtained nonlinear dependencies, for (alpha) (p) and (alpha) (I), which can be explained in the atomic collisions theory.

Paper Details

Date Published: 23 February 2000
PDF: 8 pages
Proc. SPIE 4068, SIOEL '99: Sixth Symposium on Optoelectronics, (23 February 2000); doi: 10.1117/12.378677
Show Author Affiliations
Alina Gearba, Univ. Politehnica Bucharest (Romania)
C. Negutu, Univ. Politehnica Bucharest (Romania)
Gabriela Cone, Univ. Politehnica Bucharest (Romania)
Ion M. Popescu, Univ. Politehnica Bucharest (Romania)

Published in SPIE Proceedings Vol. 4068:
SIOEL '99: Sixth Symposium on Optoelectronics
Teodor Necsoiu; Maria Robu; Dan C. Dumitras, Editor(s)

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