Design for an efficient single photon source based on a single quantum dot embedded in a parabolic solid immersion lens

Abstract

We have designed a single photon emitter based on a single quantum dot embedded within a single mode parabolic solid immersion lens (pSIL) and a capping low-index pSIL. Numerical simulations predicted that the emitter performance should exhibit a high photon collection efficiency with excellent far-field emission properties, broadband operation, and good tolerance in its geometric (spatial configuration) parameters. Good geometric tolerance in a single-mode pSIL without yielding significant losses in the photon collection efficiency is advantageous for device fabrication. The low-index top pSIL layer provided this structure with a high photon collection efficiency, even in the case of a small numerical aperture (NA). Photon collection efficiencies of 64% and 78% were expected for NA values of 0.41 and 0.5, respectively. In addition to the benefits listed above, our combined pSIL design provided excellent broadband performance in a 100 nm range.

Defining the plasmonic cavity performance based on mode transitions to realize highly efficient device design

“…It is necessary to design a device with excellent optical characteristics across a broad wavelength range without severe deterioration in its efficiency in spite of having minor topology defects or fabrication errors. 26 Excellent optical characteristics can be seen with the disk due to its slower |E/E 0 | deterioration rate% all across the l R AE 100 nm range when compared with the cube. Considering all the above properties, the NPOM nanostructure involving the disk NP can boost the variety of the device performance.…”

“…[15][16][17][18][19][20][21] Factors like flexibility and simplicity in fabrication, good geometrical tolerance, large dielectric layer thicknesses with superior device characteristics, and low-cost processing are essential for developing next-generation devices with multiple applications. [22][23][24][25][26][27][28][29] Significantly, the nanoparticle shape, material, design, and size in a plasmonic device play considerable roles in determining the localized surface plasmon resonance (LSPR) and near-field enhancement properties. [30][31][32][33][34][35][36] In addition to these parameters, it is necessary to consider the geometrical edge effect, which influences the near field enhancement in plasmonic nanostructures.…”

Self-Assembled Nanoporous Biofilms from Functionalized Nanofibrous M13 Bacteriophage

“…Surface roughness data obtained by AFM was found to be useful for creating uneven surfaces. We modeled the pore shape as parabolic one using the following equation [ 54 ]: …”

“…This linear increase in reflectivity values can be explained using a solid immersion lens (SIL) structure. Our pores were shaped like an inverted SIL, which is parabolic shaped [ 54 ]. For pores with larger diameters and depths, light could be more easily transmitted, comparatively.…”

Modifying Plasmonic-Field Enhancement and Resonance Characteristics of Spherical Nanoparticles on Metallic Film: Effects of Faceting Spherical Nanoparticle Morphology

“…In this case, a metallic nanoparticle (100% perfect NP diameter with spherical shape) interacts with its mirror image in the underlying metallic mirror, virtually creating a dimer NP design. A thin dielectric layer is placed between the NP and the metallic film to avoid ohmic loss and metal absorption [39]. By employing this design a variety of NPOM structures with different nanogaps, as a function of dielectric layer thickness, are possible.…”