Sensing nanoparticles with a cantilever-based scannable optical cavity of low finesse and sub- λ3 volume

Journal article
(Original article)


Publication Details

Author(s): Kelkar H, Wang D, Martin-Cano D, Hoffmann B, Christiansen S, Götzinger S, Sandoghdar V
Journal: Physical Review Applied
Publisher: American Physical Society
Publication year: 2015
Volume: 4
Journal issue: 5
ISSN: 2331-7019
Language: English


Abstract


We report on the realization of an open plane-concave Fabry-Perot resonator with a mode volume below λ3 at optical frequencies. We discuss some of the less-common features of this microcavity regime and show that the ultrasmall mode volume allows us to detect cavity resonance shifts induced by single nanoparticles even at quality factors as low as 100. Being based on low-reflectivity micromirrors fabricated on a silicon cantilever, our experimental arrangement provides broadband operation, tunability of the cavity resonance, and lateral scanning. These features are interesting for a range of applications including biochemical sensing, modification of photophysics, and optomechanical studies.



FAU Authors / FAU Editors

Götzinger, Stephan Prof. Dr.
Department Physik
Sandoghdar, Vahid Prof. Dr.
Lehrstuhl für Experimentalphysik (Alexander-von-Humboldt-Professur)


Additional Organisation
Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden


External institutions
Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light


How to cite

APA:
Kelkar, H., Wang, D., Martin-Cano, D., Hoffmann, B., Christiansen, S., Götzinger, S., & Sandoghdar, V. (2015). Sensing nanoparticles with a cantilever-based scannable optical cavity of low finesse and sub- λ3 volume. Physical Review Applied, 4(5). https://dx.doi.org/10.1103/PhysRevApplied.4.054010

MLA:
Kelkar, Hrishikesh, et al. "Sensing nanoparticles with a cantilever-based scannable optical cavity of low finesse and sub- λ3 volume." Physical Review Applied 4.5 (2015).

BibTeX: 

Last updated on 2018-04-12 at 13:52