12 January 2018 Compact terahertz spectrometer based on disordered rough surfaces
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Proceedings Volume 10623, 2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications; 1062308 (2018) https://doi.org/10.1117/12.2292960
Event: International Conference on Optical Instruments and Technology 2017, 2017, Beijing, China
Abstract
In this paper, a compact spectrometer based on disordered rough surfaces for operation in the terahertz band is presented. The proposed spectrometer consists of three components, which are used for dispersion, modulation and detection respectively. The disordered rough surfaces, which are acted as the dispersion component, are modulated by the modulation component. Different scattering intensities are captured by the detection component with different extent of modulation. With a calibration measurement process, one can reconstruct the spectra of the probe terahertz beam by solving a system of simultaneous linear equations. A Tikhonov regularization approach has been implemented to improve the accuracy of the spectral reconstruction. The reported broadband, compact, high-resolution terahertz spectrometer is well suited for portable terahertz spectroscopy applications.
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Tao Yang, Tao Yang, Bing Jiang, Bing Jiang, Jia-cheng Ge, Jia-cheng Ge, Yong-yuan Zhu, Yong-yuan Zhu, Xing-ao Li, Xing-ao Li, Wei Huang, Wei Huang, } "Compact terahertz spectrometer based on disordered rough surfaces", Proc. SPIE 10623, 2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications, 1062308 (12 January 2018); doi: 10.1117/12.2292960; https://doi.org/10.1117/12.2292960
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