Size-dependent optical forces on dielectric microspheres in hollow core photonic crystal fibers

Year: 2022

Authors: Kincaid P.S.; Porcelli A.; Neves A.A.R.; Arimondo E.; Camposeo A.; Pisignano D.; Ciampini D.

Autors Affiliation: Dipartimento di Fisica “E. Fermi”, University di Pisa, Largo B. Pontecorvo 3, Pisa, I- 56127, Italy; NEST, Istituto Nanoscienze-CNR, Scuola Normale Superiore, Piazza S. Silvestro 12, Pisa, I- 56127, Italy; Universidade Federal do ABC, Av. dos Estados 5001 Santo Andry, SP, CEP 09210-580, Brazil; INO-CNR, Via G. Moruzzi 1, Pisa, I- 56124, INO-CNR, Via G. Moruzzi 1, I- 56124 Pisa, Italy

Abstract: Optical forces on microspheres inside hollow core photonic crystal fibers (HC-PCFs) are often predicted using a ray optics model, which constrains its validity based on wavelength and microsphere sizes. Here, we introduce a rigorous treatment of the electromagnetic forces based on the Lorenz-Mie theory, which involves analytical determination of beam shape coefficients for the optical modes of a HC-PCF. The method is more practicable than numerical approaches and, in contrast with ray optics models, it is not limited by system size parameters. Time of flight measurements of microspheres flying through the HC-PCF lead to results consistent with the Lorenz-Mie predictions.

Journal/Review: OPTICS EXPRESS

Volume: 30 (14)      Pages from: 24407  to: 24420

More Information: H2020 Marie Sklodowska-Curie Actions (813367).
DOI: 10.1364/OE.458674

Citations: 3
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