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

Fei He, Ya Cheng, Lingling Qiao, Chen Wang, Zhizhan Xu, Koji Sugioka, Katsumi Midorikawa, Ji Wu

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number041108
JournalApplied Physics Letters
Volume96
Issue number4
DOIs
Publication statusPublished - 8 Feb 2010

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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