Compressed sensing method for measuring absorption spectrum of liquid samples
| Autor: | Xue-Feng Liu, Ruo-Ming Lan, Cheng-Jie Bai, Lina Zhao, Yue-Feng Zhao |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Absorption spectroscopy Spectrometer business.industry Resolution (electron density) Detector 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics Wavelength Optics Compressed sensing 0103 physical sciences Calibration Electrical and Electronic Engineering 0210 nano-technology business Spectroscopy |
| Zdroj: | Optik. 189:60-65 |
| ISSN: | 0030-4026 |
| DOI: | 10.1016/j.ijleo.2019.05.075 |
| Popis: | For low-light or near-infrared absorption spectrum measurements, it is challenging to obtain high resolution spectra due to limitations of exotic array detectors. In this paper, a new spectral measurement method based on compressed sensing (CS) is reported. An experimental spectrometer is constructed and calibrated, and the absorption spectra of two liquid samples are measured. Along with a high resolution, the new method has a better signal-to-noise ratio (SNR) than the conventional scanning spectroscopy technique. The measurement resolution of our experimental system is 0.38 nm. The result of wavelength position calibration is accurate. The peak value of characteristic spectrum of red sample is 730 nm, and that of blue sample are 440 nm and 740 nm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect