Abstract

Scanning near-field optical microscopy (SNOM) using local active probes provides general images of the electric part of the photonic local density of states. However, certain atomic clusters can supply more information by simultaneously revealing both the magnetic and the electric local density of states in the optical range. For example, nanoparticles doped with rare-earth elements like europium or terbium provide both electric dipolar (ED) and magnetic dipolar (MD) transitions. In this theoretical paper, we develop a quantum description of active systems (rare-earth ions) coupled to a photonic nanostructure by solving the optical Bloch equations together with Maxwell’s equations. This approach allows us to access the population of the emitting energy levels for all atoms excited by the incident light, degenerated at the extremity of the tip of a near-field optical microscope. We show that it is possible to describe the collected light intensity due to ED and MD transitions in a scanning configuration. By carrying out simulations on different experimentally interesting systems, we demonstrate that our formalism can be of great value for the interpretation of experimental configurations, including various external parameters such as the laser intensity, the polarization and wavelength, the SNOM probe size, and the nature of the sample.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Enhancement of electric and magnetic dipole transition of rare-earth-doped thin films tailored by high-index dielectric nanostructures

Peter R. Wiecha, Clément Majorel, Christian Girard, Arnaud Arbouet, Bruno Masenelli, Olivier Boisron, Aurélie Lecestre, Guilhem Larrieu, Vincent Paillard, and Aurélien Cuche
Appl. Opt. 58(7) 1682-1690 (2019)

Probing vectorial near field of light: imaging theory and design principles of nanoprobes

Lin Sun, Benfeng Bai, and Jia Wang
Opt. Express 26(14) 18644-18663 (2018)

Strong magnetic field enhancement and magnetic Purcell effect in a dielectric disk-ring composite nanocavity

Yang Yang, Bofeng Zhu, and Haitao Dai
J. Opt. Soc. Am. B 37(3) 702-708 (2020)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (43)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription