Open AccessEffect of pulse temporal shape on optical trapping and impulse transfer using ultrashort pulsed lasers
Author(s) -
Janelle Shane,
Michaël Mazilu,
Woei Ming Lee,
Kishan Dholakia
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.007554
Subject(s) - optics , femtosecond , materials science , multiphoton intrapulse interference phase scan , femtosecond pulse shaping , laser , pulse duration , bandwidth limited pulse , ultrashort pulse , pulse (music) , trapping , pulse shaping , optical tweezers , impulse (physics) , nanosecond , physics , ecology , quantum mechanics , detector , biology
We investigate the effects of pulse duration on optical trapping with high repetition rate ultrashort pulsed lasers, through Lorentz-Mie theory, numerical simulation, and experiment. Optical trapping experiments use a 12 femtosecond duration infrared pulsed laser, with the trapping microscope's temporal dispersive effects measured and corrected using the Multiphoton Intrapulse Interference Phase Scan method. We apply pulse shaping to reproducibly stretch pulse duration by 1.5 orders of magnitude and find no material-independent effects of pulse temporal profile on optical trapping of 780nm silica particles, in agreement with our theory and simulation. Using pulse shaping, we control two-photon fluorescence in trapped fluorescent particles, opening the door to other coherent control applications with trapped particles.