Phase-locked operation of a compact three slab-sections radio-frequency discharged CO2 laser

Year: 1993

Authors: Lapucci A., Cangioli G.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: In order to obtain a compact source with a good power extraction and a low divergence we constructed a laser making use of both large area discharges and laser array principles. In this paper we show the near- and far-field patterns obtained from the laser working in unlocked and phase-locked conditions, and compare them to distributions obtained by means of simple diffraction theories. We give a modal description to the field distribution and discuss the conditions for the attainment of the phase-locked emission, making use of the information obtained from the spectrum of beat frequencies.


Volume: 29 (12)      Pages from: 2962  to: 2971

More Information: This work was partly supported by the E.C. Esprit Basic Research Action n.7118 (TONICS). The authors are also grateful to Prof. N. R. Heckenberg of Queensland University (Brisbane-Australia) for his useful comments, and to P. Bianchi and M. D’Uva for their prompt technical assistance.
KeyWords: Arrays; Directional patterns (antenna); Electric discharges; Electric excitation; Electromagnetic field theory; Electromagnetic fields; Electromagnetic wave diffraction; Laser mode locking; Laser resonators; Optical design; Phase locked loops; Spectrum analysis, Diffraction theory; Laser arrays; Near and far field patterns; Radiofrequency discharge; Three slab sections, Carbon dioxide lasers
DOI: 10.1109/3.259413

Citations: 12
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