By Professor Motoichi Ohtsu, Dr. Kiyoshi Kobayashi (auth.)
Using the skinny movie of sunshine, the optical close to box, that's localized at the floor of a nanometric fabric has got rid of the diffraction restrict as a barrier to imaging at the nano- and atomic scales. yet a paradigm shift within the techniques of optics and optical know-how is needed to appreciate the instrinsic nature of the close to fields and the way most sensible to take advantage of them. Professors Ohstu and Kobayashi crafted Optical close to Fields at the foundation in their speculation that the entire strength for using optical close to fields might be discovered basically with novel nanometric processing, capabilities, and manipulation, i.e., via controlling the intrinsic interplay among nanometer-sized optical close to fields and fabric platforms, and extra, atoms. The e-book provides bodily intuitive ideas and theories for college kids, engineers, and scientists engaged in learn in nanophotonics and atom photonics.
Read Online or Download Optical Near Fields: Introduction to Classical and Quantum Theories of Electromagnetic Phenomena at the Nanoscale PDF
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Additional info for Optical Near Fields: Introduction to Classical and Quantum Theories of Electromagnetic Phenomena at the Nanoscale
8, whose tip radius a corresponds to the radius of P. By inserting this ﬁber probe into the optical near ﬁeld on S, the probe tip disturbs the optical near ﬁeld to generate the scattered light 2. Part of the scattered light 2 is coupled to the ﬁber probe and transmitted to its end. A photodetector installed at the end measures the transmitted power of the scattered light 2. On the other hand, an opaque ﬁlm coated on the tapered part and foot of the ﬁber probe works as a screen to prevent scattered light 1 from coupling to the ﬁber probe.
6a, the positions of the light source and photodetector are exchanged. It would be more appropriate to say that the roles of the spheres S and P are exchanged. That is, Fig. 10a represents light propagating from the light source to the sphere P and the sphere S is then illuminated by the optical near ﬁeld on the surface of P. This optical near ﬁeld is disturbed by S and the converted scattered light 2 propagates to the photodetector. 10b shows the sphere P of Fig. 10a replaced by a ﬁber probe, where the light from the source is injected into the end of the ﬁber probe to 10 The sphere S stands for the sample under microscopic measurement, whilst sphere P is named after the probe.
12 Atom guidance experiments have been successfully carried out using rubidium (Rb) atoms. By heating metallic Rb to 200◦ C in an oven, Rb atomic 12 This attractive force is the sum of the van der Waals force (see the supplement to Sect. 1) and the Casimir–Polder force, which has been called the cavity potential. (A detailed explanation is given in Sect. 3. 44 3 Past and Present of Near-Field Optics Hollow fiber Cladding Optical near field Core Atom Hollow Guided light (a) (b) Fig. 18. Atom guidance by a hollow optical ﬁber.