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The nanoscope can deliver a high-intensity spot (greater than 40 mW/μm2) with a near-field spot size of less than 50 nm in diameter.
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Abstract: Stanford scientists have developed a nanoscope consisting of integrated VCSEL arrays bonded to arrays of nanoaperture tips. This versatile device can serve as an AFM and/or near-field probe for a variety of applications such as heat-assisted recording, optical interconnects or single-molecule detection. The nanoscope can deliver a high-intensity spot (greater than 40 mW/μm2) with a near-field spot size of less than 50 nm in diameter. A sharp tip can be incorporated to the nanoaperture to achieve sub-20 nm resolution. Applications: A wide range of near-field applications Ultrahigh-density optical data storage Integrated light source for future nanophotonic circuits Advantages: The nano-aperture cannot be milled directly on the top surface since the focus ion beam has a 7 degrees incident angle and thus leads to tapering in the nanoaperture The rounding along the periphery of the nano-aperture will severely compromise the resonance of the aperture The near-field probe is only effective less than 20 nm from the emitting surface