کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9785784 | 1512656 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Double-grating frequency shifter for low-coherence heterodyne interferometry
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
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 μm for a displacement range of 50 μm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 251, Issues 1â3, 1 July 2005, Pages 1-5
Journal: Optics Communications - Volume 251, Issues 1â3, 1 July 2005, Pages 1-5
نویسندگان
Kaiwei Wang, Lijiang Zeng,