Micro Lens¶

The example is an adaption to the single photon source design in Gschrey et al. [1]. The geometry consists of a multi-layer substrate which serves as Bragg mirror and a micro lens on top, a quantum dot is situated within the top layer:

Schematics of the geometry of a micro lens with Bragg mirror (rotationally symmetric)¶

Near field and far field plots @ $969\mathrm{nm}$

The following figures show near field intensities and far fields of three dipoles with different polarizations for a spherical micro lens (with different scalings of the pseudo color plots):

Intensities of $x$ , $y$ , and $z$ -polarized dipoles (@ $969\mathrm{nm}$ ), spherical micro lens)¶

Upper far fields (in air) of $x$ , $y$ , and $z$ -polarized dipoles (@ $969\mathrm{nm}$ ), spherical micro lens)¶

Lower far fields (in substrate) of $x$ , $y$ , and $z$ -polarized dipoles (@ $969\mathrm{nm}$ ), spherical micro lens)¶

Bibliography

[1]	Gschrey, et al., Highly indistinguishable photons from deterministic quantum-dot micro lenses utilizing three-dimensional in situ electron-beam lithography. Nat. Comm. 6, 7662 (2015).