Influence of spherical aberration on beam parameters in design of laser optical focusing systems

zhao bao-yin; yang dang-xiao; lv bai-da

Volume 19 Issue 05

May 2007

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Article Navigation > High Power Laser and Particle Beams > 2007 > 19(05): 0-

liu xin, liu jin-yuan, yang fang, et al. High-voltage pulse generation with MOSFET[J]. High Power Laser and Particle Beams, 2008, 20.

Citation:

zhao bao-yin, yang dang-xiao, lv bai-da. Influence of spherical aberration on beam parameters in design of laser optical focusing systems[J]. High Power Laser and Particle Beams, 2007, 19.

liu xin, liu jin-yuan, yang fang, et al. High-voltage pulse generation with MOSFET[J]. High Power Laser and Particle Beams, 2008, 20.

Citation:

zhao bao-yin, yang dang-xiao, lv bai-da. Influence of spherical aberration on beam parameters in design of laser optical focusing systems[J]. High Power Laser and Particle Beams, 2007, 19.

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Influence of spherical aberration on beam parameters in design of laser optical focusing systems

1.
Institute of Laser Physics and Chemistry,Sichuan University,Chengdu 610064,China

Publish Date: 2007-05-15

Abstract

Abstract

Using the second-order-moment and entropy-based definitions of the beam width, changes of the beam parameters including beam width, far-field divergence angle and beam quality factor of flat-topped beams passing through a spherically aberrated lens are studied. It is shown that the spherical aberration affects the beam parameters in the image space. The relative errors of the beam width and far-field divergence angle introduced by the spherical aberration increase with increasing spherical aberration coefficient and decreasing beam order. The spherical aberration results in an increase of the beam quality factor of flat-topped beams. The relative errors of the waist width at the real focal plane depend on the sign of the spherical aberration coefficient, whereas the relative errors of the
- laser optics,
- flat-topped beam,
- spherical aberration,
- beam parameter,
- relative error

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