OPTICAL RADIATION CHARACTERISTICS OF LASER-INDUCED AIR PLASMA AND JAMMING CCD IMAGING DETECTOR
Abstract
We studied the characteristics of laser-induced air plasma optical radiation and jamming the imaging CCD detector. Optical emission spectra of the air plasma ranged from 400 to 700 nm are composed of individual spectral lines superposing on continuous radiation, while the continuum radiation is mainly due to bremsstrahlung and recombination radiation. The jamming threshold of the CCD imaging detector jammed by optical radiation of the laser-induced air plasma is 3.98 · 10 10 W/cm2. With increasing laser intensity, the plasma expansion volume and spectral intensity will increase, the image quality of the CCD detector will deteriorate, and the jamming area on the CCD detector will become larger. The experimental results indicate that the jamming effect of laser-induced plasma radiation on CCD detectors can overcome the shortcomings of a single-wavelength laser use, which is important for improving the optoelectronic jamming effect.
Supporting agencies: We acknowledge support from the National Natural Science Foundation of China (Grant No. 61575030), the Natural Science Foundation of Jilin province (Grant No. 20180101283JC), the Department of Education of Jilin Province (JJKH20190539KJ), and Funds from CUST (Grant No. XJJLG-2017-10).
About the Authors
Y. Dai
School of Science, Changchun University of Science and Technology
China
Jilin
China
Jilin
Ch. Song
School of Chemistry and Environmental Engineering, Changchun University of Science and Technology
China
Jilin
China
Jilin
J. Lei
Xi’an institute of Applied Optics
China
Shanxi
China
Shanxi
Y. Han
Xi’an institute of Applied Optics
China
Shanxi
China
Shanxi
Xun Gao
School of Science, Changchun University of Science and Technology
China
Jilin
China
Jilin
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Review
For citations:
Dai Y., Song Ch., Lei J., Han Y., Gao X. OPTICAL RADIATION CHARACTERISTICS OF LASER-INDUCED AIR PLASMA AND JAMMING CCD IMAGING DETECTOR. Zhurnal Prikladnoii Spektroskopii. 2020;87(2):349(1)-349(9).
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