Quality Parameters of Zero-Order Bessel Light Beams
A collimated light beam at the output of a semiconductor laser module was studied experimentally. The intensity distribution in the transverse cross section of this beam did not have infinite-order axial symmetry and varied with the longitudinal coordinate. The experimental spatial intensity distributions in light fields formed by a conical lens (axicon) from radiation of He–Ne and semiconducting lasers were compared. Criteria were proposed for objective numerical quality assessment of zero-order Bessel light beams. The quality parameters of Bessel light fields formed by the axicon from radiation of He–Ne and semiconducting lasers were obtained from trial calculations.
KeywordsBessel light beam semiconducting laser module intensity distribution Bessel light beam quality parameter
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