STP759

    The Use of Ion-Beam Deposited Diamond-Like Carbon for Improved Optical Elements for High Powered Lasers

    Published: Oct 1981


      Format Pages Price  
    PDF (212K) 11 $25   ADD TO CART
    Complete Source PDF (8.8M) 11 $149   ADD TO CART


    Abstract

    The use of thin films of ion-beam deposited diamond-like carbon (DLC) appears to provide a number of properties that could result in improved optical elements (windows, mirrors) for high powered lasers. Many of these properties have already been described.

    Of particular importance for high powered lasers is the ultra-smooth nature of the ion-beam deposited DLC plus its transparency, chemical intertness, and barrier properties. Several mechanisms predict and explain why DLC films are observed to be smoother than the substrate, and can result in improved transmission and reflection coefficients. The problem of high power surface breadkown associated with microscopic irregularities in the substrate can be reduced as a result of the ion-beam deposition energy and the smoothing effects of a film of ion-beam diamond-like carbon. The relationship of DLC to high power breakdown at surface defects, as well as plasma breakdown will be discussed to show how the ion-beam diamond-like carbon coating can improve performance.

    Keywords:

    Diamond-like carbon, thin films, ion beam deposition, surface smoothness, barrier properties


    Author Information:

    Aisenberg, S
    Applied Science Laboratories, Waltham, Massachusetts

    Stein, M
    Applied Science Laboratories, Waltham, Massachusetts


    Paper ID: STP37023S

    Committee/Subcommittee: F01.02

    DOI: 10.1520/STP37023S


    CrossRef ASTM International is a member of CrossRef.