Characterizing ultrashort optical pulses using second-order nonlinear nanoprobes

Haifeng Li, Zhe Zhang, Qian Xu, Kebin Shi, Yaoshun Jia, Baigang Zhang, Yong Xu, Zhiwen Liu

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


We report a second-order nonlinear nanoprobe for characterizing ultrafast optical near fields. The proposed nanoprobe comprises second harmonic nanocrystals attached to a carbon nanotube, which is in turn attached to a silica fiber taper. We demonstrate in situ pulse characterization directly in the air core of a photonic crystal fiber. Further, it is shown that nanoprobes containing a single nanocrystal in the tip of the nanotube can be fabricated by auxiliary focused ion beam nanomilling. These results indicate that the proposed nanoprobe can open an avenue for probing the evolution of ultrafast optical fields in complex three-dimensional micro- or nanostructures.

Original languageEnglish (US)
Article number261108
JournalApplied Physics Letters
Issue number26
StatePublished - Dec 27 2010

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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