Accurate wavelength calibration method for compact CCD spectrometer

作者:Sun, Y. C.; Huang, C.; Xia, G.*; Jin, S. Q.; Lu, H. B.
来源:Journal of the Optical Society of America A-Optics Image Science and Vision, 2017, 34(4): 498-505.
DOI:10.1364/JOSAA.34.000498

摘要

Wavelength calibration is an important step in charge-coupled device (CCD) spectrometers. In this paper, an accurate calibration method is proposed. A model of a line profile spectrum is built at the beginning, followed by noise reduction, bandwidth correction, and automatic peak-seeking treatment. Experimental tests are conducted on the USB4000 spectrometer with a mercury-argon calibration light source. Compared with the traditional method, the results show that this wavelength calibration procedure obtains higher accuracy and the deviations are within 0.1 nm.