Iterative correction process for optical thin film synthesis with the Fourier transform method
作者： P. G. Verly , J. A. Dobrowolski
DOI: 10.1364/AO.29.003672
关键词: Spectral density estimation 、 Short-time Fourier transform 、 Fast Fourier transform 、 Optics 、 Fourier transform 、 Materials science 、 Iterative method 、 Refractive index 、 Thin film 、 Discrete-time Fourier transform
摘要: Several errors inherent to the Fourier transform method for optical thin film synthesis, including inaccuracy of spectral functions Q (sigma) used in transforms, are compensated numerically by using successive approximations. We show that complex phase is a key parameter which can be exploited reduce significantly thickness synthesized films and control shape refractive index profiles without affecting performance. This compared other well established design techniques.
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