Amorphous germanium waveguides for medical diagnostics using mid-infrared spectroscopy
Amorphous germanium waveguides for medical diagnostics using mid-infrared spectroscopy
复制标题
使用中红外光谱进行医疗诊断的非晶锗波导
DOI:
10.1117/12.2648868
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Osborne E
中科院分区:
文献类型:
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作者:
Osborne E
Molecules have ‘fingerprint’ absorptions in the mid-infrared, enabling their identification via infrared spectroscopy. For applications beyond the lab, such as medical diagnosis, fully integrated mid-infrared spectroscopy on chip would be ideal. Germanium offers low absorption in the mid-IR, making it an ideal candidate for waveguides for mid-IR spectroscopy via the evanescent field. Amorphous germanium could offer a low-cost fabrication route; our work compares methods to deposit amorphous germanium films via RF sputtering, e-beam evaporation and plasma-enhanced chemical vapour deposition (PECVD). In addition to standard germanium waveguides produced by etching a germanium film, an alternative manufacturing method is proposed, where silicon is etched to form pedestals, followed by deposition of amorphous germanium to produce waveguides. Pedestal waveguides offer potential for single-mode operation across a broad wavelength range, making them a strong candidate for spectroscopy applications.
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DOI:
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发表时间:
2019
期刊:
BiOS
影响因子:
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作者:
Lorenz Sykora;A. Müller;A. Kondratiev;A. Roth;Vitalii Mozin;Axel Fehr;Gloria Zörnack
通讯作者:
Gloria Zörnack
DOI:
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发表时间:
2019
期刊:
2019 Workshop on Recent Advances in Photonics (WRAP)
影响因子:
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通讯作者:
E. G. Melo
DOI:
--
发表时间:
2021
期刊:
影响因子:
--
作者:
Y. Kuznetsova;A. Zatsepin;N. Gavrilov
通讯作者:
N. Gavrilov