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A plasmonic structure is proposed to achieve perfect absorber. Numerical simulations indicate that there are two absorption peaks at wavelength 1565nm and 1998nm with absorptivity 99.93% and 99.86%, respectively. Near perfect dual-band absorber is obtained.
We developed a custom-design video-rate intravital laser-scanning microscopy system for direct in vivo cellular visualization. We visualized the dynamic behavior of flowing T lymphocytes in lymph node and the molecular absorption in small intestine.
A new back-illuminated uni-traveling-carrier photodiode (UTC-PD) is designed for long-wavelength applications in this paper. This device design incorporates dual absorption regions with conventional UTC-PDs, simultaneously by adopting a cliff layer in the collection layer to obtain high efficiency and high speed. Theoretical and simulation study indicate that the responsivity of the 14 µm2 active...
By a metal catalytic chemical etching method we obtained “black silicon” with very high absorption efficiency from ultraviolet to near infrared range. The characteristic of the black silicon as absorber for photo-thermal-electricity conversion was investigated.
The rapid development of nanotechnology, such as microelectromechanical systems (MEMS), microelectronics and nanophotonics, has led to the emerging attentions in achieving functional optoelectronic structures and/or metamaterials at micro and nanoscale resolution. Multiphoton absorption nanofabrication has demonstrated its great potential for applications in preparation of complex three-dimensional...
With the help of the strong nonlinear optical response in silicon nanophotonic wire waveguides complex sources and devices can be integrated on a chip. We demonstrate mid-infrared wavelength translators and frequency combs Furthermore, we open up the possibility for the integration of nonlinear optical functions at telecom wavelengths by exploiting more exotic nonlinear interactions in silicon waveguides...
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