By Igor Minin, Oleg Minin
In this ebook the authors current a number of examples of ideas used to beat the Abby diffraction restrict utilizing flat and 3D diffractive optical components, photonic crystal lenses, photonic jets, and floor plasmon diffractive optics. The buildings mentioned can be utilized within the microwave and THz diversity and likewise as scaled types for optical frequencies. Such nano-optical microlenses should be built-in, for instance, into current semiconductor heterostructure systems for next-generation optoelectronic applications.
Chapter 1 considers flat diffractive lenses and leading edge 3D radiating constructions together with a conical millimeter-wave Fresnel region plate (FZP) lens proposed for subwavelength focusing. In bankruptcy 2 the subwavelength focusing homes of diffractive photonic crystal lenses are thought of and it really is proven that at the least 3 sorts of photonic crystal lens are attainable.
With the purpose of attaining subwavelength focusing, in bankruptcy three another mechanism to supply photonic jets at Terahertz frequencies (terajets) utilizing 3D dielectric debris of arbitrary dimension (cuboids) is taken into account. A scheme to create a 2nd “teraknife” utilizing dielectric rods is additionally mentioned. within the ultimate bankruptcy the profitable variation of free-space 3D binary phase-reversal conical FZPs for operation on floor plasmon-polariton (SPP) waves demonstrates that analogues of Fourier diffractive elements will be constructed for in-plane SPP 3D optics.<
ing concept, modelling and test, this ebook could be a important source for college kids and researchers engaged on nanophotonics and sub-wavelength focusing and imaging.
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Additional resources for Diffractive Optics and Nanophotonics: Resolution Below the Diffraction Limit
The ﬁrst secondary lobes tend to conﬁne the central lobe into a low divergent beam, while the secondary lobes with high transverse components tend to reduce the length and the waist of photonic jets. Since all the results shown before have been obtained considering normal illumination, it is important to evaluate the focusing properties of the under oblique incidence . Simulation results of the normalized power distribution in the xz(H) plane for input angles from 0° to 80° are shown in Fig.
Thirakoune, S. (2002). Perforated dielectric resonator antennas. Electronics Letters, 38(24), 1493–1495. 26. , & Kishk, A. A. (2007). Analysis of dielectric resonator antenna arrays with supporting perforated rods. In 2nd European Conference on Antennas and Propagation, EuCAP 2007 (pp. 1–5). 27. , et al. (2006). Towards focusing using photonic crystal flat lens. Opto-Electronics Review, 14(3), 225–232. 28. , Minin, I. , & Minin, O. V. (2014). Terajets produced by 3D dielectric cuboids. Applied Physics Letters, 105, 084102.
Minin, I. , Minin, O. V. (2004). Correction of dispersion distortion of femtocesond pulses by choosing the surface shape of diffractive optical elements. Optoelectronics, Instrumentation and Data Processing, 40(1), 34–38 (2004). , Thakur, J. , & Kim, Y. H. (2010). Efﬁcient DRW antenna for quasi-optics feed in W-band imaging radiometer system. Microwave and Optical Technical Letters, 52, 1221. Minin, I. , Minin O. V. (2014). Spectral properties of 3D diffractive lenses with 3D subwavelengh focusing spot.