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Proceedings Paper

Two-photon single-beam particle trapping of active microspheres
Author(s): Dru Morrish; Xiaosong Gan; Min Gu
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Paper Abstract

In this paper, we have demonstrated the measurement of the morphology-dependent resonance (MDR) within a laser trapped microsphere excited under two-photon excitation. Both trapping and two-photon excitation are achieved by a single femtosecond pulsed laser beam simultaneously. MDR induced by two-photon excitation has also shown to overcome difficulties in separation of excitation and resonant wavelengths and the inability to confine excitation illumination precisely3. A spectrally resolved image demonstrates that this technique provides an alternative imaging mechanism for near-field imaging and mapping surface tomography.

Paper Details

Date Published: 18 October 2004
PDF: 5 pages
Proc. SPIE 5514, Optical Trapping and Optical Micromanipulation, (18 October 2004); doi: 10.1117/12.555563
Show Author Affiliations
Dru Morrish, Swinburne Univ. of Technology (Australia)
Xiaosong Gan, Swinburne Univ. of Technology (Australia)
Min Gu, Swinburne Univ. of Technology (Australia)

Published in SPIE Proceedings Vol. 5514:
Optical Trapping and Optical Micromanipulation
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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