期刊
PHYSICS IN MEDICINE AND BIOLOGY
卷 47, 期 21, 页码 3743-3748出版社
IOP PUBLISHING LTD
DOI: 10.1088/0031-9155/47/21/310
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We present an all-optoelectronic THz imaging system for ex vivo biomedical applications based on photomixing of two continuous-wave laser beams using photoconductive antennas. The application of hyperboloidal lenses is discussed, They allow for f-numbers less than 1/2 permitting better focusing and higher spatial resolution compared to off-axis paraboloidal mirrors whose f-numbers for practical reasons must be larger than 1/2. For a specific histological sample. an analysis of image noise is discussed.
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