Abstract

We report on the measurement of morphology-dependent resonance within a laser-trapped micro-sphere excited under two-photon absorption. Both trapping and two-photon excitation are simultaneously achieved by a single femtosecond pulsed laser beam. The effect of the laser power as well as the pulse width on the transverse trapping force is first investigated. The dependence of two-photon-induced morphology-dependent resonance on the scanning velocity of a trapped particle is then experimentally determined.

©2004 Optical Society of America

Femtosecond optical tweezers for in-situ control of two-photon fluorescence

B. Agate, C. T. A. Brown, W. Sibbett, and K. Dholakia
Opt. Express 12(13) 3011-3017 (2004)

Near-field imaging by a micro-particle: a model for conversion of evanescent photons into propagating photons

Djenan Ganic, Xiaosong Gan, and Min Gu
Opt. Express 12(22) 5325-5335 (2004)

Two-photon absorption-induced photoacoustic imaging of Rhodamine B dyed polyethylene spheres using a femtosecond laser

Gregor Langer, Klaus-Dieter Bouchal, Hubert Grün, Peter Burgholzer, and Thomas Berer
Opt. Express 21(19) 22410-22422 (2013)

Strong optical force induced by morphology-dependent resonances

Jack Ng, C. T. Chan, Ping Sheng, and Zhifang Lin
Opt. Lett. 30(15) 1956-1958 (2005)

Flow imaging by use of femtosecond-laser-induced two-photon fluorescence

James B. Kelman, Douglas A. Greenhalgh, Euan Ramsay, Dong Xiao, and Derryck T. Reid
Opt. Lett. 29(16) 1873-1875 (2004)