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Real-time characterization of FM-AM modulation in a high-power laser facility using an RF-photonics system and a denoising algorithm
Huang, Canhong; Lu, Xinghua; Jiang, Youen; Wang, Xiaochao; Qiao, Zhi; Fan, Wei; fanweil@siom.ac.cn
2017
Source PublicationAppl. Optics
Volume56Issue:6Pages:1610
AbstractFM-AM modulation of high-power lasers significantly affects laser performance. Therefore, precise measurement of the FM-AM modulation depth is necessary. The subsequent FM-AM modulation generated by group velocity dispersion when the laser pulse propagates through a fiber affects the measurement accuracy. In order to eliminate this effect, a waveform-acquisition module is proposed that converts a broad-spectrum pulse of 1053 nm to a narrow-spectrum pulse of 1550 nm, without affecting the waveform. In addition, a signal-processing algorithm based on the orthogonal matching pursuit method is implemented to remove the sampling noise from the wave-form. In this way, the signal-to-noise ratio of the measurement can be readily improved. Both theoretical and experimental results indicate that the proposed FM-AM modulation detection system is effective and economical. It can measure the FM-AM modulation depth precisely, and therefore shows considerable promise for future applications in high-power lasers. (C) 2017 Optical Society of America
SubtypeArticle
Department联合
DOI10.1364/AO.56.001610
Indexed BySCI
WOS IDWOS:000394341600007
Citation statistics
Document Type期刊论文
Identifierhttp://ir.siom.ac.cn/handle/181231/27987
Collection高功率激光物理国家实验室
Corresponding Authorfanweil@siom.ac.cn
Affiliation中国科学院上海光学精密机械研究所
Recommended Citation
GB/T 7714
Huang, Canhong,Lu, Xinghua,Jiang, Youen,et al. Real-time characterization of FM-AM modulation in a high-power laser facility using an RF-photonics system and a denoising algorithm[J]. Appl. Optics,2017,56(6):1610.
APA Huang, Canhong.,Lu, Xinghua.,Jiang, Youen.,Wang, Xiaochao.,Qiao, Zhi.,...&fanweil@siom.ac.cn.(2017).Real-time characterization of FM-AM modulation in a high-power laser facility using an RF-photonics system and a denoising algorithm.Appl. Optics,56(6),1610.
MLA Huang, Canhong,et al."Real-time characterization of FM-AM modulation in a high-power laser facility using an RF-photonics system and a denoising algorithm".Appl. Optics 56.6(2017):1610.
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