Precise laser spot measurement based on film-scanning

ZHANG Jian-rong; WU Feng-tie; XING Xiao-xue; ZENG Xia-hui

Using color reversal film as record medium,the radius of the Bessel beam central spot is measured through the analysis of the digital image by film-scanning.The experimental result 16.77μm±0.01μm is consisted well with the theory result 15.16μm.The result also indicates that the film-scanning method shows some advantages in lower cost,higher accuracy and larger measurable scale.Furthermore,this measurement is superior to the expensive laser beam parameter analyzer in measuring the beam size on micrometer magnitude of 1Hz ultrashort pulse.

Corresponding author: WU Feng-tie, ftwu@public.qz.fj.cn;

1. College of Science and Technology, Huaqiao University, Quanzhou 362021, China

Received Date: 2005-11-25

Accepted Date: 2005-12-29

Available Online: 2007-02-25

Abstract: Using color reversal film as record medium,the radius of the Bessel beam central spot is measured through the analysis of the digital image by film-scanning.The experimental result 16.77μm±0.01μm is consisted well with the theory result 15.16μm.The result also indicates that the film-scanning method shows some advantages in lower cost,higher accuracy and larger measurable scale.Furthermore,this measurement is superior to the expensive laser beam parameter analyzer in measuring the beam size on micrometer magnitude of 1Hz ultrashort pulse.

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Reference (10)

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Precise laser spot measurement based on film-scanning

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References

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