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Proceedings Paper

Mode and wavelength selectivity in slab-geometry CO2 lasers
Author(s): Christopher L. Petersen; Dietmar B. Eisel; J. J. Brzezinski; Herbert Gross
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Paper Abstract

CO2 slab waveguide lasers have gain regions defined by two rectangular, flat electrodes, which are typically separated by approximately 2 mm. These electrode surfaces act to both excite the laser gas and to guide the laser light in a plane perpendicular to the surfaces. The component of the light propagating parallel to the electrode surfaces is acted on only by the resonator mirrors, and hence the complete laser is therefore a hybrid conventional/waveguide laser. These lasers share many of the properties of pure waveguide lasers, including mode selection, coupling losses, etc. It has been observed that CO2 slab waveguide lasers can exhibit erratic mode/wavelength shifts when broadband optics and non-optimized waveguide structures are used. An improved laser resonator is presented that operates on a single vibrational transition of the CO2 molecule by simultaneously optimizing the waveguide mode losses and by employing wavelength selective optics.

Paper Details

Date Published: 16 August 1994
PDF: 10 pages
Proc. SPIE 2206, High-Power Gas and Solid State Lasers, (16 August 1994); doi: 10.1117/12.184574
Show Author Affiliations
Christopher L. Petersen, Carl Zeiss Inc./Humphrey Instruments (United States)
Dietmar B. Eisel, Carl Zeiss Inc./Humphrey Instruments (United States)
J. J. Brzezinski, Carl Zeiss Inc./Humphrey Instruments (United States)
Herbert Gross, Carl Zeiss (Germany)

Published in SPIE Proceedings Vol. 2206:
High-Power Gas and Solid State Lasers
Markus Bohrer; Tommaso Letardi; Dieter Schuoecker; Horst Weber, Editor(s)

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