Observation of Mie resonances for a single microsphere using force spectroscopy and two photon excited luminescence in an optical tweezers system

Author

Fontes, Adriana ; Neves, Antonio A R ; Moreira, Wendel L. ; de Thomaz, André A. ; Barbosa, Luis C. ; de Paula, M. ; Ajito, Katsuhiro ; Cesar, Carlos L.

Author_Institution

Inst. de Fisica, Southampton Univ., UK

fYear

2005

fDate

12-17 June 2005

Firstpage

215

Abstract

The paper demonstrates optical tweezer´s potential by showing more than eight Mie resonance peaks of a single 9 μm polystyrene microspheres, and showed the capability to selective couple the light to either the TE, TM or both microsphere modes depending of the beam size, the light polarization and the beam positioning. The spectrum obtained from the luminescence excited by two photon absorption (TPE - luminescence) using the optical tweezers to hold a 6 μm bead suspended and a femtosecond Ti:sapphire laser for two photon excitation.

Keywords

Mie scattering; photoluminescence; radiation pressure; spectroscopy; two-photon spectra; Mie resonances; optical tweezers; polystyrene microspheres; selective light coupling; two photon absorption; two photon excited luminescence; Absorption; Laser beams; Laser excitation; Luminescence; Optical coupling; Optical polarization; Resonance; Spectroscopy; Tellurium; Ultrafast optics;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics Conference, 2005. EQEC '05. European

Print_ISBN

0-7803-8973-5

Type

conf

DOI

10.1109/EQEC.2005.1567382

Filename

1567382