Optothermal Effects Of Laser Modes In Laser Materials Processing

    Authors

    A. Kar;M. D. Langlais

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    Opt. Quantum Electron.

    Keywords

    Scanning Cw Laser; Electron-Beam; Temperature Profiles; Semiconductors; Engineering, Electrical & Electronic; Optics

    Abstract

    All laser materials processing involves two fundamental phenomena: the conversion of optical energy into thermal energy, and the generation of thermal stresses in the laser-processed materials. The distributions of the thermal energy and stresses in the substrate depend on the laser mode used for materials processing. A proper understanding of the temperature and stress distributions is essential for producing high-quality products using the laser technology. The solution of the complete thermoelastic problem is very complex and requires numerical methods. This paper presents simple analytic expressions for the temperature and thermal stress distributions in the substrate processed with TEM(00) and TEM(01)* mode laser beams. The temperature is found to be maximum at the point that encounters the maximum laser intensity. The thermal stress distributions are found to be different owing to the differences in the laser modes used for this study.

    Journal Title

    Optical and Quantum Electronics

    Volume

    27

    Issue/Number

    12

    Publication Date

    1-6-1995

    Document Type

    Article

    Language

    English

    First Page

    1165

    Last Page

    1180

    WOS Identifier

    WOS:A1995TK68800006

    ISSN

    0306-8919

    Share

    COinS