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The resolution of a far-field optical microscope is usually limited to d=lambda/(2nsinalpha)>200nm, with nsinalpha denoting the numerical aperture of the lens and lambda the wavelength of light. Here, lens-based fluorescence microscopy concepts that feature a resolving power on the nanoscale. All these concepts share a common basis: exploiting selected (pairs of) states and transitions of the fluorescent...
Optical Coherence Tomography (OCT) is a well known technique for creating non-invasive, high resolution images of biological microstructure. OCT has matured into animportant imaging modality since its invention in 1991. The popularity of the method lies in the numerous advantages that it offers high detection sensitivity allowing fast imaging speed, andhigh spatial resolution. In this paper we propose...
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