A 0.4-mm-diameter probe for nonlinear optical imaging

Author(s)

Bao, Hongchun; Gu, Min

Available versions

Abstract

A miniaturized probe that possesses a diameter of 0.4 mm is developed for two-photon-excited fluorescence imaging. The miniaturized probe was manufactured by the collapse of air holes and the formation of a lens on the tip of a double-clad photonic crystal fiber (DCPCF) using electric arc discharging from a conventional fusion splicer. As a result, a femtosecond pulsed laser beam delivered by the DCPCF can be directly focused on a sample for two-photon fluorescence imaging. The numerical aperture of the lensed DCPCF is 0.12. The corresponding focal spot size is 6 µm, which is close to the diffraction limit. This 0.4-mm-diamter probe can provide clear two-photon-excited fluorescence images of 10-µm-diameter fluorescent microspheres.

Publication year

2009

Publication type

Journal article

Source

Optics Express, Vol. 17, no. 12 (2009), pp. 10098-10104

ISSN

1094-4087

Publisher

Optical Society of America

Copyright

Copyright © 2009 OSA. The published version is reproduced in accordance with the copyright policy of the publisher. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OE.17.010098. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

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