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	Laser devices
	DAVID GOULDING; STEPHEN P. HEGARTY; ANDREW ELLIS; GUILLAUME HUYET
	2008-11-26
著作权人	UNIVERSITY COLLEGE CORK - NATIONAL UNIVERSITY OF IRELAND C RK
专利号	IE20080222A1
国家	爱尔兰
文献子类	发明申请
其他题名	Laser devices
英文摘要	The light from two Quantum Dot (QD) lasers (QDL1 and QDL2) are collimated and reflected from an arrangement of mirrors and a blazed diffraction grating. The grating ensures single longitudinal mode operation. The output from each of the lasers is independently coupled into optical fibres and then reformed into nearly collimated free-space beams. The two beams are combined at a beam splitter and directed onto a video camera, the camera output having interference fringes demonstrating that the two sources have locked their phases. One or other of the QD lasers may be coupled to a high-bandwidth photodiode and the intensity dynamics is analysed with an oscilloscope and a microwave electronic spectrum analyser. The oscilloscope indicates there are no significant fluctuations in the laser intensity. To provide higher sensitivity analysis, an electronic spectrum analyser generates a Fourier transform of the laser intensity, the output of which lacks any signal above the instrument noise floor, demonstrating the high stability of the locked output.
公开日期	2008-11-26
申请日期	2008-03-27
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/51626]
专题	半导体激光器专利数据库
作者单位	UNIVERSITY COLLEGE CORK - NATIONAL UNIVERSITY OF IRELAND C RK
推荐引用方式 GB/T 7714	DAVID GOULDING,STEPHEN P. HEGARTY,ANDREW ELLIS,et al. Laser devices. IE20080222A1. 2008-11-26.

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