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Formation of the desired energy impact during laser processing of materials using the radiation focusators

N.L. Kazanskiy1,2   S.P. Murzin1,2   S.Y. Klochkov1,2  
1Samara State Aerospace University named after academician S.P. Korolev 

2Image Processing Systems Institute of RAS 


 PDF, 674 kB

Pages: 89-93.

Abstract:
Successful implementation of technological processes of laser processing is possible only if a certain spatial profile of radiation intensity is formed in a given area on the surface of the workpiece, which is achieved by using appropriate optical systems. The most effective processing modes are determined only by solving the inverse heat conduction problem, which allows to determine the specific heat flux through the workpiece surface using the given mathematical model and temperature field, as well as the coefficients included in the main heat conduction equation. A technique has been developed for calculating the spatial distribution of laser radiation power to form the required energy impact on technological objects; the use of this technique allows to create a more uniform temperature field along the length of a moving strip source. It is shown that the use of diffractive optical elements – radiation focusators allows to increase the width of the treatment area without overheating its central parts.

Keywords:
laser processing of materials, radiation focusator, optical system, workpiece surface, mathematical model, temperature field, conduction equation.

Citation:
Kazanskiy NL, Murzin SP, Klochkov SY. Formation of the desired energy impact during laser processing of materials using the radiation focusators. Computer Optics 2005; 28: 89-93.

References:
  1. Soifer VA, ed. Methods for computer design of diffractive optical elements. New York: John Willey and Sons Inc; 2002. ISBN: 978-0-471-09533-0. 
  2. Prokhorov AM, Sisakian IN, Golub MA, Soifer VA, Karpeev SV, Goncharsky AV, Danilov VA, Popov VV, Stepanov VV. Method and optical phase element for focusing monochromatic radiation. Patent GB2185126A of May 24, 1989. 
  3. Murzin SP. Thermal effects of combined energy flows on materials during plasma-laser coating [In Russian]. Izvestia of Samara Scientific Center of the Russian Academy of Sciences 2002; 4(1): 81-86. 
  4. Murzin SP. Increasing the efficiency of laser treatment of materials using elements of computer optics. J Adv Mater 2003; 10(2): 181-185. 
  5. Alifanov OM. Inverse heat transfer problems [In Russian]. Moscow: "Mashinostroenie" Publisher; 1988. 
  6. Tikhonov AN, Arsenin VY. Methods for solving the ill-conditioned problems [In Russian]. Moscow: "Nauka" Publisher; 1986. 
  7. Kozdoba LA. Solutions of nonlinear problems of heat conduction [In Russian]. Kiev: "Naukova Dumka" Publisher; 1976. 
  8. Grigoryants AG, Shiganov IN. Equipment and technology for laser processing of materials [In Russian]. Moscow: "Vysshaya Shkola" Publisher; 1990.

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