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Two-photon fluorescence excitation with a microlens fabricated on the fused silica chip by femtosecond laser micromachining

Source: Appl. Phys. Lett. 96, 041108 (2010); doi:10.1063/1.3294627

Published 28 January 2010

KEYWORDS and PACS
Keywords
PACS
  • 42.79.Bh
    Optical lenses, prisms and mirrors
  • 42.82.Cr
    Optical fabrication techniques; lithography, pattern transfer (integrated optics)
  • 42.50.Hz
    Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift
  • 42.65.Re
    Ultrafast processes; optical pulse generation and pulse compression
  • 42.62.Cf
    Industrial applications of lasers
  • YEAR: 2010
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PUBLICATION DATA
ISSN:
1553-9601 (online)
Publisher:
AIP is a member of CrossRef AIP
Fei He,1,2 Ya Cheng,1 Lingling Qiao,1,2 Chen Wang,1 Zhizhan Xu,1 Koji Sugioka,3 Katsumi Midorikawa,3 and Ji Wu4
1State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P.O. Box 800-211, Shanghai 201800, People's Republic of China
2Graduate School of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China
3Laser Technology Laboratory, RIKEN—The Institute of Physical and Chemical Research, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
4Department of Materials, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom
We report on the fabrication of a microlens on a fused silica chip with excellent optical performance by femtosecond laser microfabrication. We show, both in theory and experimentally, that the fabricated microlens offers a high resolution approaching the optical diffraction limit. Moreover, two-photon excitation of fluorescence with the fabricated microlens is demonstrated. The lateral and axial resolutions of fluorescence are measured to be ~1.7 and 12.3  µm, respectively. ©2010 American Institute of Physics
History: Received 10 November 2009; accepted 29 December 2009; published 28 January 2010
Permalink: http://link.aip.org/link/?APPLAB/96/041108/1

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