Beam quality enhancement for a radio-frequency excited annular CO2 laser

Year: 1998

Authors: Lapucci A., Ciofini M., Mascalchi S., Di Fabrizio E., Gentili M.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy;
Istituto di Elettronica dello Stato Solido-CNR, Via Cineto Romano 42, 00156 Roma, Italy

Abstract: We report the preliminary experimental results obtained from an annular radio-frequency excited CO2 laser with a Talbot cavity and a phase correcting mirror external to the cavity. The Talbot cavity is adopted in order to reduce the number of oscillating azimuthal modes. The use of the external profile-modulated mirror is aimed at reducing the beam phase modulation and thus increasing the amount of fundamental annular mode energy content. The beam quality results to be sensibly increased. (C) 1998 American Institute of Physics.


Volume: 73 (18)      Pages from: 2549  to: 2551

KeyWords: Gas lasers; Design of specific laser systems; Resonators, cavities, amplifiers, arrays; Beam characteristics: profile, intensity; Modulation, tuning, and mode locking
DOI: 10.1063/1.122529

Citations: 15
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