Mode and wavelength selectivity in slab-geometry CO2 lasers

Christopher L. Petersen; Dietmar B. Eisel; J. J. Brzezinski; Herbert Gross

doi:10.1117/12.184574

16 August 1994 Mode and wavelength selectivity in slab-geometry CO₂ lasers

Christopher L. Petersen, Dietmar B. Eisel, J. J. Brzezinski, Herbert Gross

Proceedings Volume 2206, High-Power Gas and Solid State Lasers; (1994) https://doi.org/10.1117/12.184574
Event: Europto High Power Lasers and Laser Applications V, 1994, Vienna, Austria

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.

Citation Download Citation

Christopher L. Petersen, Dietmar B. Eisel, J. J. Brzezinski, and Herbert Gross "Mode and wavelength selectivity in slab-geometry CO₂ lasers", Proc. SPIE 2206, High-Power Gas and Solid State Lasers, (16 August 1994); https://doi.org/10.1117/12.184574

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