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Nanoscale local field sensing is a powerful technique for various applications in physical and biological studies. The performance critically depends on the high spatial resolving capability. Conventional protocols mainly make use of the scanning pointed tips with near field interaction, while the tips would introduce perturbation to the detected field at nanoscale and. Also the preparation of tips...
“Whispering gallery modes” (WGM) optical micro- and nano resonators are important category in nanophotonics researches. The ultra-high quality factor (Q) makes them promising ranging from sensors, filters to low threshold sources. In the above supplications, the frequency stability of the WGM is critical, which is determined by several factors. In this paper, using the microsphere resonator we construct...
We propose and realize a spot-packaged structure for the microsphere-taper coupling system by only encapsulating and solidifying the coupling region with low refractive index polymer as the package material. After spot-package, ultrahigh quality factor is obtained with the microsphere diameters around 300 . The robustness of the spot-packaged structure is also tested, demonstrating...
This paper expounds the working principle and the development program of on-line real-time automatic detector with high precision. By a series of techniques, such as combining driving frequency regulation and integration time adjustment, the independent regulations of high-speed synchronous counter, data transmission clock and transfer clock of optical signal are achieved, and the technical problems...
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