A miniaturized fiber-coupled terahertz endoscope system
نویسندگان
چکیده
منابع مشابه
A miniaturized fiber-coupled terahertz endoscope system.
In this study, we have designed, fabricated, and characterized a miniaturized optical fiber-coupled terahertz (THz) endoscope system. The endoscopic system utilized a photoconductive generator and detector driven by a mode-locked Ti:sapphire laser. In reflection mode, the endoscope showed a high signal-to-noise ratio and a wide frequency spectrum similar to the conventional THz time-domain spec...
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Low-temperature-grown (LTG) GaAs is used as an optical-heterodyne converter or photomixer, to generate coherent continuous-wave (CW) output radiation at frequencies up to 5 THz. Photomixers consist of an epitaxial LTG-GaAs layer that is patterned with interdigitated metal electrodes, on which two laser beams are focused with their frequencies offset by the desired difference frequency. The diff...
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Terahertz time-domain spectroscopy (TDS) is a field that has been steadily growing in research labs over the last 11 years with demonstrated spectroscopic applications in semiconductors, liquids, and gases, as well as more recent applications based on 2D-imaging. However, even with the interest outside of the ultrafast community given to terahertz spectroscopy and imaging (such as the system in...
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Conventional MRI instruments transmit received MRI signals through electrical cables. Although this design has proved to be effective over the years, we report a fiber-optic system that addresses the needs of recent developments in MRI technology. One of these technologies is phased array coils with a high number of elements, where total size of interconnections is a primary problem, and other ...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2009
ISSN: 1094-4087
DOI: 10.1364/oe.17.017082