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- W4252562776 abstract "Publisher SummaryThis chapter focuses on the measurements of absorption spectra of thin films. The precision methods of thin-film parameter measurement allow determining the refractive index and absorption coefficient of films while using a coherent source of radiation. In spite of the fact that the absorption bands are very wide in the visible range and they have feebly marked structure, complex investigations allow studying the density distribution of electron states in the band gap. It is difficult to measure the absorption in thin and weakly absorbing films with the help of existing methods. This difficulty is caused by the fact that the direct measurement of absorption when αd ≪ 1 becomes inexact, where d is the film thickness. The possibilities and limitations of absorption optical spectroplaotometry are discussed in the chapter. It also elaborates the instrumentation of the waveguide spectroscopy of thin films. Special features of absorption spectra recording by waveguide spectroscopy and their processing is discussed in the chapter, along with the explaining the measurement of absorption spectra by the Fourier spectroscopy of guided modes." @default.
- W4252562776 created "2022-05-12" @default.
- W4252562776 date "2005-01-01" @default.
- W4252562776 modified "2023-09-23" @default.
- W4252562776 title "Chapter 6 Measurements of absorption spectra of thin films" @default.
- W4252562776 doi "https://doi.org/10.1016/s1079-4050(05)80011-0" @default.
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