9 April 2003 Beam quality enhancement for unconventional laser formats
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Proceedings Volume 5131, Third GR-I International Conference on New Laser Technologies and Applications; (2003) https://doi.org/10.1117/12.513516
Event: Third GR-I International Conference on New Laser Technologies and Applications, 2003, San Diego, CA, United States
Abstract
In this paper we review the general problem of Optical Beam Quality for beams that are not simple axial symmetric gaussian beams. We discuss the theoretical studies and experimental results obtained on the beams emitted by compact, medium power, diffusion cooled CO2 lasers and laser arrays. Our case-studies include a linear array of 9 CO2 lasers and an annular laser aperture with array-like emission produced by a Talbot cavity. We show that aspects of beam propagation that were founded on Gaussian beam theory need to be re-evaluated when considering these more complex beams. For example different polarization states in array elements lead to different field distributions in the far field and thus to a different beam quality. Furthermore we comment on the limited information given for such structured beams by traditional Beam Quality Factors, such as M2, established for nearly-Gaussian beams.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Antonio Lapucci, Antonio Lapucci, Marco Ciofini, Marco Ciofini, } "Beam quality enhancement for unconventional laser formats", Proc. SPIE 5131, Third GR-I International Conference on New Laser Technologies and Applications, (9 April 2003); doi: 10.1117/12.513516; https://doi.org/10.1117/12.513516
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