Study on Frequency Coherence Properties of Light Beams

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	Study on Frequency Coherence Properties of Light Beams
	Ke JH; Wang LX
刊名	ieee journal of quantum electronics
	2009
卷号	45 期号:5-6 页码:514-522
关键词	Coherence Fabry-Perot (FP) laser heterodyne technique intensity modulation linewidth
ISSN号	0018-9197
通讯作者	zhu nh chinese acad sci inst semicond state key lab integrated optoclect beijing 100083 peoples r china. e-mail address: nhzhu@semi.ac.cn ; liwei05@semi.ac.cn ; lxwang@semi.ac.cn ; sfchen@semi.ac.cn ; jhke@semi.ac.cn ; ylzhang@semi.ac.cn ; jmwen@semi.ac.cn ; yliu@semi.ac.cn ; wxin@semi.ac.cn ; wxin@semi.ac.cn ; xiel@semi.ac.cn
中文摘要	this paper presents a new concept of frequency coherence in the frequency-time domain to describe the field correlations between two lightwaves with different frequencies. the coherence properties of the modulated beams from lightwave sources with different spectral widths and the modes of fabry-wrot (fp) laser are investigated. it is shown that the lightwave and its corresponding sidebands produced by the optical intensity modulation are perfectly coherent. the measured linewidth of the beat signal is narrow and almost identical no matter how wide the spectral width of the beam is. the frequency spacing of the adjacent fp modes is beyond the operation frequency range of the measurement instruments. in our experiment, optical heterodyne technique is used to investigate the frequency coherence of the modes of fp laser by means of the frequency shift induced by the optical intensity modulation. experiments show that the fp modes are partially coherent and the mode spacing is relatively fixed even when the wavelength changes with ambient temperature, bias current and other factors. therefore, it is possible to generate stable and narrow-linewidth signals at frequencies corresponding to several mode intervals of the laser.
学科主题	光电子学
收录类别	SCI
资助信息	national natural science foundation of china 60820106004 605360106060601960777029national basic research program of china 2006cb604902 2006cb302806 2006dfa11880 the work was supported in part by the national natural science foundation of china under grants 60820106004, 60536010, 60606019, and 60777029, and in part by the national basic research program of china under grants 2006cb604902, 2006cb302806, and 2006dfa11880.
语种	英语
公开日期	2010-03-08
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/7163]
专题	半导体研究所_中国科学院半导体研究所（2009年前）
推荐引用方式 GB/T 7714	Ke JH,Wang LX. Study on Frequency Coherence Properties of Light Beams[J]. ieee journal of quantum electronics,2009,45(5-6):514-522.
APA	Ke JH,&Wang LX.(2009).Study on Frequency Coherence Properties of Light Beams.ieee journal of quantum electronics,45(5-6),514-522.
MLA	Ke JH,et al."Study on Frequency Coherence Properties of Light Beams".ieee journal of quantum electronics 45.5-6(2009):514-522.