Profile Measurement of Laser Microbeam Produced by Glass Capillaries

Mori, Mitsumasa; Kawamura, Shunya; Ikeda, Tokihiro; Jin, Wei–Guo

doi:10.23919/ps.2019.8817735

Cited by 1 publication

(1 citation statement)

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“…With high brightness, purity of color, and strong directional transmission, the Gaussian beam has been widely used in many fields, such as laser processing [1][2][3] , laser precision measurement [4][5][6][7][8] , optical information processing [9][10][11][12][13] , holography [14,15] , and optical communication [16,17] . Semiconductor lasers in the field of photo-electronic technology status and development trends of other lasers have been irreplaceable, which is an important source of epoch-making significance.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical study of linearly polarized Lorentz–Gauss beams with heterogeneous distribution

et al. 2021

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The unevenly distributed Lorentz-Gaussian beams are difficult to reproduce in practice, because they require modulation in both amplitude and phase terms. Here, a new linearly polarized Lorentz-Gauss beam modulated by a helical axicon (LGB-HA) is calculated, and the two various experimental generation methods of this beam, Fourier transform method (FTM) and complex-amplitude modulation (CAM) method, are depicted. Compared with the FTM, the CAM method can modulate the phase and amplitude simultaneously by only one reflection-type phase-only liquid crystal spatial light modulator. Both of the methods are coincident with the numerical results. Yet CAM is simpler, efficient, and has a higher degree of conformance through data comparison. In addition, considering some barriers exist in shaping and reappearing the complicated Lorentz-Gauss beam with heterogeneous distribution, the evolution regularities of the beams with different parameters (axial parameter, topological charge, and phase factor) were also implemented.

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