Near-field optical trapping with an ultrashort pulsed laser beam

Smitha Kuriakose; Dru Morrish; Xiaosong Gan; James W. M. Chon; Kishan Dholakia; Min Gu

doi:10.1063/1.2888771

Near-field optical trapping with an ultrashort pulsed laser beam

Smitha Kuriakose
, Dru Morrish
, Xiaosong Gan
, James W. M. Chon
, Kishan Dholakia
, Min Gu

Research output: Contribution to journal › Article › peer-review

Abstract

We report the focused evanescent optical trapping of nonfluorescent and fluorescent dielectric microspheres using a femtosecond laser. The experiment confirms that the trapping efficiency increases with the size of the particles. As a result, a pulsed laser has been used to trap particles in the Mie regime and to excite whispering gallery modes in them. The excitation of whispering gallery modes in a near-field femtosecond trap shows a significant suppression of the two-photon fluorescence background with an improvement of the photon storage factor by 46%, as compared to far-field two-photon excitation. (c) 2008 American Institute of Physics.

Original language	English
Number of pages	3
Journal	Applied Physics Letters
Volume	92
DOIs	https://doi.org/10.1063/1.2888771
Publication status	Published - 25 Feb 2008

Keywords

EVANESCENT-WAVE ILLUMINATION
TOTAL INTERNAL-REFLECTION
2-PHOTON FLUORESCENCE
MICROSCOPY
EXCITATION
TWEEZERS
FORCE

Access to Document

10.1063/1.2888771

Handle.net

Persistent link to portal record

Cite this

@article{0d1996dbb46a48a7852652d0ddea02ef,

title = "Near-field optical trapping with an ultrashort pulsed laser beam",

abstract = "We report the focused evanescent optical trapping of nonfluorescent and fluorescent dielectric microspheres using a femtosecond laser. The experiment confirms that the trapping efficiency increases with the size of the particles. As a result, a pulsed laser has been used to trap particles in the Mie regime and to excite whispering gallery modes in them. The excitation of whispering gallery modes in a near-field femtosecond trap shows a significant suppression of the two-photon fluorescence background with an improvement of the photon storage factor by 46\%, as compared to far-field two-photon excitation. (c) 2008 American Institute of Physics.",

keywords = "EVANESCENT-WAVE ILLUMINATION, TOTAL INTERNAL-REFLECTION, 2-PHOTON FLUORESCENCE, MICROSCOPY, EXCITATION, TWEEZERS, FORCE",

author = "Smitha Kuriakose and Dru Morrish and Xiaosong Gan and Chon, \{James W. M.\} and Kishan Dholakia and Min Gu",

year = "2008",

month = feb,

day = "25",

doi = "10.1063/1.2888771",

language = "English",

volume = "92",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

}

TY - JOUR

T1 - Near-field optical trapping with an ultrashort pulsed laser beam

AU - Kuriakose, Smitha

AU - Morrish, Dru

AU - Gan, Xiaosong

AU - Chon, James W. M.

AU - Dholakia, Kishan

AU - Gu, Min

PY - 2008/2/25

Y1 - 2008/2/25

N2 - We report the focused evanescent optical trapping of nonfluorescent and fluorescent dielectric microspheres using a femtosecond laser. The experiment confirms that the trapping efficiency increases with the size of the particles. As a result, a pulsed laser has been used to trap particles in the Mie regime and to excite whispering gallery modes in them. The excitation of whispering gallery modes in a near-field femtosecond trap shows a significant suppression of the two-photon fluorescence background with an improvement of the photon storage factor by 46%, as compared to far-field two-photon excitation. (c) 2008 American Institute of Physics.

AB - We report the focused evanescent optical trapping of nonfluorescent and fluorescent dielectric microspheres using a femtosecond laser. The experiment confirms that the trapping efficiency increases with the size of the particles. As a result, a pulsed laser has been used to trap particles in the Mie regime and to excite whispering gallery modes in them. The excitation of whispering gallery modes in a near-field femtosecond trap shows a significant suppression of the two-photon fluorescence background with an improvement of the photon storage factor by 46%, as compared to far-field two-photon excitation. (c) 2008 American Institute of Physics.

KW - EVANESCENT-WAVE ILLUMINATION

KW - TOTAL INTERNAL-REFLECTION

KW - 2-PHOTON FLUORESCENCE

KW - MICROSCOPY

KW - EXCITATION

KW - TWEEZERS

KW - FORCE

UR - https://www.scopus.com/pages/publications/40049084016

U2 - 10.1063/1.2888771

DO - 10.1063/1.2888771

M3 - Article

SN - 0003-6951

VL - 92

JO - Applied Physics Letters

JF - Applied Physics Letters

ER -

Near-field optical trapping with an ultrashort pulsed laser beam

Abstract

Keywords

Access to Document

Handle.net

Other files and links

Fingerprint

Cite this