Lighting of a monochromatic scatterer with virtual gain

Autor(es)

Ali, Rfaqat ^[1]

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, Gleb Wataghin Phys Inst, Appl Phys Dept, Photon Res Ctr, POB 6165, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PHYSICA SCRIPTA; v. 96, n. 9 SEP 2021.
• Citações Web of Science: 0

Resumo

In this work, we discuss the scattering features of a dipolar particle made of large refractive index material by employing the concept of virtual gain and virtual loss. The virtual gain and loss can be achieved in a lossless passive nanostructure by shaping the temporal waveform of incident signals in the complex frequency plane. We show that an appropriate tuning of excitation time of the impinging field allows to capture and release the electromagnetic energy on-demand for an arbitrary time scale in a lossless nanosphere. Thus, the nanosphere obliges to emit monochromatic magnetic light which can be tuned throughout the whole visible spectrum by varying the size of the nanosphere. This proposal may find fruitful applications in lab-on-a-chip technologies and the realization of monochromatic sectoral multipole light source with a large quality factor at nanoscale level. (AU)

• Processo FAPESP: 20/03131-2 - Interação entre luz e som em microcavidades ópticas
• Beneficiário: Rfaqat Ali
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado