Beam quality characterization of a radial laser array |
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Authors: | Baida Lü Hong Ma |
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Affiliation: | 1. Institute of Laser Physics &2. Chemistry, Sichuan University , Chengdu, 61064, China E-mail: baidalu@263.net |
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Abstract: | Abstract With the Hermite-Gaussian mode used to describe radial laser arrays and the M2-factor and power in the bucket (PIB) chosen as criteria for characterizing beam quality, a detailed study of beam quality of coherent and incoherent radial laser arrays is made. The closed-form expression for the M2-factor of incoherent radial arrays, which depends upon the Hermite-Gaussian order m, inverse radial fill factor r' and aspect ratio w 0x /w 0y , is derived. Numerical examples are given to illustrate and compare beam quality of coherent and incoherent radial arrays. |
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Keywords: | thin gas cell slow light optical pumping |
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