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

» View Full Text: Acrobat PDF (499 KB)

History
Original Manuscript: July 16, 2004
Revised Manuscript: August 19, 2004
Published: September 6, 2004

References

1. A. Ashkin, and J.M. Dziedzic, �??Optical trapping and manipulation of viruses and bacteria,�?? Science 235, 1517-1521 (1987). [CrossRef]
2. K. Svoboda, C.F. Schmidt, B.J. Schnapp, and S.M. Block, �??Direct observation of kinesin stepping by optical trapping interferometry,�?? Nature 365, 721-727 (1993). [CrossRef]
3. S. B. Smith, Y. Cui, and C. Bustamante, �??Overstretching B-DNA: the elastic response of individual doublestranded and single-stranded DNA molecules,�?? Science 271, 795-799 (1996). [CrossRef]
4. M. Gu, and P. Ke, �??Image enhancement in near-field scanning optical microscopy with laser-trapped metallic particles,�?? Opt. Lett. 24, 74-76 (1999).
5. M. Gu, and P. Ke, �??Effect of depolarization of scattered evanescent waves on particle-trapped near-field scanning optical microscopy,�?? Appl. Phys. Lett. 75, 175-178 (1999). [CrossRef]
6. R. E. Benner, P. W. Barber, J. F. Owen, and, R. K. Chang, �??Observation of structure resonances in the fluorescence spectra from microspheres,�?? Phys. Rev. Lett. 44, 475-478 (1980). [CrossRef]
7. A. Ashkin, and J. M. Dziedzic, �??Observation of optical resonances of dielectric spheres by light scattering,�?? Appl. Opt. 20, 1803-1814 (1981).
8. A. J. Campillo, J. D. Eversole, and H-B. �??Cavity quantum electrodynamic enhancement of stimulated emission in microdroplets,�?? Lin, Phys. Rev. Lett. 67, 437-440 (1991).
9. H.-M. Tzeng, K. F. Wall, M. B. Long, and R. K. Chang, �??Laser emission from individual droplets at wavelengths corresponding to morphology-dependent resonances,�?? Opt. Lett. 9, 499-501 (1984).
10. K. Sasaki, H. Fujiwara, and H. Masuhara, �??Photon tunneling from an optically manipulated microsphere to a surface by lasing spectral analysis,�?? Appl. Phys. Lett. 70, 2647-2650 (1997). [CrossRef]
11. D. Morrish, X. Gan, and M. Gu, �??Observation of orthogonally polarized transverse electric and transverse magnetic oscillation modes in a microcavity excited by localized two-photon absorption,�?? Appl. Phys. Lett. 81, 5132-5135 (2002). [CrossRef]
12. Y. Liu, G. J. Sonek, M. W. Berns, K. Konig, and B. Tromberg, �??Two-photon fluorescence excitation in continuous wave infrared optical tweezers,�?? Opt. Lett. 20, 2246-2247 (1995).
13. E. Florin, J. Hörber, and E. H. K. Stelzer, �??High-resolution axial and lateral position sensing using twophoton excitation of fluorophores by a continuous-wave Nd:YAG laser,�?? Appl. Phys. Lett. 69, 446-449 (1996). [CrossRef]
14. B. Agate, C. T. A. Brown, W. Sibbett, and K. Dholakia, �??Femtosecond optical tweezers for in-situ control of two-photon fluorescence,�?? Opt. Express 12, 3011-3017 (2004), <a href="http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-13-3011">http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-13-3011</a.> [CrossRef]
15. H. Misawa, R. Fujisawa, K. Sasaki, N. Kitamura, and H. Masuhara, �??Simultaneous manipulation and lasing of a polymer microparticle using a CW 1064 nm laser beam,�?? Jpn. J. Appl. Phys. 32, L788-L790 (1993). [CrossRef]
16. M. Gu, D. Morrish, and P. Ke, �??Enhancement of transverse trapping efficiency for a metallic particle using an obstructed laser beam,�?? Appl. Phys. Lett. 77, 34-36 (2000). [CrossRef]
17. A. Ashkin, �??Forces of a single-beam gradient laser trap on a dielectric sphere in the ray optics regime,�?? Biophys. J. 61, 569-581 (1992).

Author Affiliations

Dru Morrish, Xiaosong Gan, Min Gu

Swinburne University of Technology

Cited By

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Advanced Search

Recent ToC Categories (Beta)

• Oct 08 2009 : See the latest ISP articles in the Applied Optics feature on Digital Holography in 3-D Imaging.
• Sep 25 2009 : Energy Express: Optics Express announces a special bi-monthly supplement dedicated to rapid developments in optics for sustainable energy.
• Sep 21 2009 : The 2009 Education and Training in Optics and Photonics papers are now available.

More News

• Invisibility Visualized
  Nov 12, 2009 - Scientists and curiosity seekers who want to know what a partially or... more
• Diamonds are a Laser's Best Friend
  Sep 18, 2009 - Tomorrow’s lasers may come with a bit of bling, thanks to a new... more
• Open Wide and Say ‘Zap’
  Aug 19, 2009 - A group of researchers in Australia and Taiwan has developed a new... more