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	Double-grating frequency shifter for low-coherence heterodyne interferometry
	Wang, KW ; Zeng, LJ
	2010-05-10 ; 2010-05-10
关键词	white-light interferometery heterodyne detection frequency shifting grating WHITE-LIGHT INTERFEROMETER REFRACTIVE-INDEX OPTICAL-FIBER Optics
中文摘要	A double-grating frequency shifter for low-coherence heterodyne interferometry is proposed. Compared with conventional frequency shifting methods, the new frequency shifter can generate frequency shift without additional optical path delay between different wavelengths. It also in principle has no scanning range limitation because the scanning mirror moves in a part of an optical system where different wavelength constituents of the light propagate in the same direction. To demonstrate the effectivity of the frequency shifter, a Twyman-Green interferometer was connected with the frequency shifter through an optical fiber. Displacement values measured by the low-coherence heterodyne interferometer have a standard deviation of 0.09 mu m for a displacement range of 50 mu m. (c) 2005 Elsevier B.V. All rights reserved.
语种	英语 ; 英语
出版者	ELSEVIER SCIENCE BV ; AMSTERDAM ; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/24811]
专题	清华大学
推荐引用方式 GB/T 7714	Wang, KW,Zeng, LJ. Double-grating frequency shifter for low-coherence heterodyne interferometry[J],2010, 2010.
APA	Wang, KW,&Zeng, LJ.(2010).Double-grating frequency shifter for low-coherence heterodyne interferometry..
MLA	Wang, KW,et al."Double-grating frequency shifter for low-coherence heterodyne interferometry".(2010).

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