Journal
OPTICS EXPRESS
Volume 20, Issue 20, Pages 22743-22752Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.20.022743
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Funding
- Funds for the Development of Human Resources in Science and Technology
- MEXT KAKENHI [23104721]
- JSPS KAKENHI [23686015, 20226002]
- FIRST program
- Grants-in-Aid for Scientific Research [23686015, 20226002] Funding Source: KAKEN
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We have studied the feasibility of extending the operating wavelength range of high-Q silicon nanocavities above and below the 1.55 mu m wavelength band, while maintaining Q factors of more than one million. We have succeeded in developing such nanocavities in the optical telecommunication bands from 1.27 mu m to 1.50 mu m. Very high Q values of more than two million were obtained even for the 1.30 mu m band. The Q values increase proportionally to the resonant wavelength because the scattering loss decreases. We have also analyzed the influence of absorption due to surface water. We conclude that high-Q nanocavities are feasible for an even wider wavelength region including parts of the mid-infrared. (C)2012 Optical Society of America
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