High-power laser beam and focus transverse intensity distribution measuring instrument

Qiang Li; Hong Lei; Tiechuan Zuo

doi:10.1117/12.401750

5 October 2000 High-power laser beam and focus transverse intensity distribution measuring instrument

Qiang Li, Hong Lei, Tiechuan Zuo

Proceedings Volume 4223, Instruments for Optics and Optoelectronic Inspection and Control; (2000) https://doi.org/10.1117/12.401750
Event: Optics and Optoelectronic Inspection and Control: Techniques, Applications, and Instruments, 2000, Beijing, China

Abstract

Using the method of rotating hollow probe, the measuring system which can directly measure laser transverse intensity distribution of high power laser beams/focus for laser processing is studied. The mathematical and physical models of measured laser beams/focus propagation in hollow probe are founded. According to the calculation, the system parameters, including pinhole diameter of hollow probe, dimension of propagation channel, dot number of sampling, are discussed. A new measuring system is designed. The measuring of high power laser beams/focus by this system is realized. The calculation results are satisfied with the measuring results. The instrument can measure CO₂ and YAG laser, measured power larger than 10kW, maximal measured power density up to 10⁷w/cm², maximal diameter 60mm, laser focus minimal diameter smaller than 0.5mm.

Citation Download Citation

Qiang Li, Hong Lei, and Tiechuan Zuo "High-power laser beam and focus transverse intensity distribution measuring instrument", Proc. SPIE 4223, Instruments for Optics and Optoelectronic Inspection and Control, (5 October 2000); https://doi.org/10.1117/12.401750

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KEYWORDS

High power lasers

Laser processing

Carbon dioxide lasers

3D displays

Mathematical modeling

Data processing

Visualization

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