AI Article Synopsis
- A semiempirical multiphonon model is utilized to analyze the absorption coefficient of materials that transmit far-infrared light, focusing on quantum-mechanical oscillators within a Morse potential framework.
- This model combines known material properties with empirical absorption data to accurately predict intrinsic absorption in the multiphonon regions of the materials.
- The extinction data, which is crucial for understanding the performance of materials like GaAs, GaP, ZnS, and ZnSe, is gathered using a Fourier-transform spectrometer, and models help distinguish between scattering and absorption losses.
Article Abstract
A semiempirical multiphonon model based on quantum-mechanical oscillators under a Morse potential is applied to the absorption coefficient of far-infrared transmitting materials. Known material properties are combined with absorption coefficient data to fit the empirical parameters of the model. This provides an accurate means of predicting the intrinsic absorption of the materials in their multiphonon regions. Extinction data are obtained by measuring material transmittances with a Fourier-transform spectrometer and comparing them with the lossless transmittances predicted by Sellmeier models. Where appropriate, scatter models are used to separate the extinction into loss due to scatter and absorption. Data and model parameters are presented for GaAs, GaP, ZnS, and ZnSe.
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| http://dx.doi.org/10.1364/ao.44.006913 | DOI Listing |
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