Proposal of an optical nonvolatile switch utilizing surface plasmon antenna resonance controlled by giant magnetoresistance Appl. Phys. Lett. 100, 251112 (2012) Energy dissipation in energy transfer mediated by optical near-field interactions and their interfaces with optical far-fields Appl.We propose a nano-device, produced by a two-level quantum dot coupling with two different surface plasmons, to control the transport of the resonant photons along the waveguides. Our numerical results clearly show that the transporting probabilities of the incident photons are controlled by adjusting the coupling strength between the quantum dot and the surface plasmons. Therefore, the proposed nano-device can be served as either a quantum optical switcher or a beam splitter of the resonant photons. The feasibility with the experimental quantum dots and nanowires is also discussed.

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Photoacoustic microscopy (PAM), whose image quality largely depends on the optical absorption of samples, provides endogenous information for structural and functional imaging. However, PAM technology in general can not provide edge enhancement imaging for absorbing objects. Therefore, PAM and differential microscopy are integrated for the first time in a single technique to obtain an edge enhancement image. The resolution test target RTA-07 and red blood cells are used as samples to achieve the desired spatial differential photoacoustic imaging. The feasible biomedical application of edge enhancement from the improved differential PAM was demonstrated.