STP954: Design of High Power Laser Coatings for Grazing Incidence Mirrors

    Southwell, WH
    Rockwell International Science Center, Thousand Oaks, California

    Pages: 8    Published: Jan 1986


    Abstract

    Several interesting features occur for high reflectance (HR) coatings at near-grazing incidence: the existence of a Brewster's angle, a double-valued effective index for the p-polarization (enabling a MacNeille-type polarizer to be constructed in air), and a half-wave retarder. It is shown that HR coatings can be designed which have high reflectance and, as compared to normal-incidence designs, extremely low internal E-field standing waves for both s- and p-polarization components. Such mirrors should exhibit considerably less thermal distortion due to decreased laser absorption.

    Keywords:

    coatings, damage thresholds, electric fields, grazing incidence, mirrors


    Paper ID: STP23133S

    Committee/Subcommittee: F01.19

    DOI: 10.1520/STP23133S


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