섬유

optical properties of zinc sulphide thin films prepared by sublimation in ultrahigh vacuum and by r. f. sputtering in argon

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 239
thin films of zinc sulfide, in single-crystal and in polycrystalline form, were grown by vacuum deposition methods onto silicon and gallium arsenide substrates. the thin film optical constants are determined from a computer solution of the optical waveguide dispersion relationship for measured effective indices and loss of guided modes excited by prism coupling of laser light at discrete wavelengths between 465. 8 and 632. 8 nm. sputtered films exhibit much higher levels of absorption than films prepared in ultrahigh vacuum from a molecular beam source, yet both preparation techniques give consistent values of the refractive index close to those measured for bulk material. 23 refs
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