title: Inverse design for full control of spontaneous emission using light emitting scattering optical elements.
abstract: Full control of spontaneous emission is essential in various fields of optics. This work presents an inverse designed light-emitting scattering optical element that includes full control of spontaneously emitted photons (i.e., enhancement at a central frequency and suppression at neighboring frequencies) and directionality of the output beam. This is achieved by embedding a one-dimensional optical active element inside a cluster of square shaped gallium arsenide dielectric rods whose positions are optimized by a genetic algorithm. Large spontaneous emission enhancement of > 70 is predicted at the transition wavelength if high-quality sources are employed. Moreover, neighboring wavelengths are simultaneously suppressed over 10 times. Finally, the radiated beam is highly collimated to only 6 degrees and contains 30 times the energy emitted by the source placed in free space.
authors.affiliation: Wave Phenomena Group, Nanophotonics Technology Center, Polytechnic University of Valencia, C/Camino de Vera s/n, E-46022, Valencia, Spain.
authors.forename: Andreas
authors.initials: A
authors.lastname: Håkansson
authors.forename: Hideki T
authors.initials: HT
authors.lastname: Miyazaki
authors.forename: José
authors.initials: J
authors.lastname: Sánchez-Dehesa