Ultrafast laser nanofabrication assisted with near-field scanning optical microscopy

Weijie Wang; Ming Hui Hong; Dongjiang Wu; Yeow Whatt Goh; Y. Lin; P. Luo; Boris S. Luk'yanchuk; Yongfeng Lu; Tow Chong Chong

doi:10.1117/12.540758

18 November 2003 Ultrafast laser nanofabrication assisted with near-field scanning optical microscopy

Weijie Wang, Ming Hui Hong, Dongjiang Wu, Yeow Whatt Goh, Y. Lin, P. Luo, Boris S. Luk'yanchuk, Yongfeng Lu, Tow Chong Chong

Author Affiliations +

Proceedings Volume 5063, Fourth International Symposium on Laser Precision Microfabrication; (2003) https://doi.org/10.1117/12.540758
Event: Fourth International Symposium on Laser Precision Microfabrication, 2003, Munich, Germany

Abstract

We have developed the laser nanoprocessing technique by the integration of the ultrafast laser and near-field scanning microscopy (NSOM). The second harmonic femtosecond laser working in the optical near-field with the assistance of NSOM equipment was applied to expose the photosensitive polymer material. The nanopatterns with feature size smaller than the laser wavelength can be fabricated. The optical diffraction limitation is therefore broken through by the near-field nanoprocessing. It was found in our experiment that the nanofabrication feature size depends strongly on the gap between the fiber probe tip and the substrate surface, as well as the laser coupling efficiency. The approach offers the advantages of high precision, speed and selectivity in nanopatterning, and is promising to be used in data storage device manufacture for higher density recording.

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Weijie Wang, Ming Hui Hong, Dongjiang Wu, Yeow Whatt Goh, Y. Lin, P. Luo, Boris S. Luk'yanchuk, Yongfeng Lu, and Tow Chong Chong "Ultrafast laser nanofabrication assisted with near-field scanning optical microscopy", Proc. SPIE 5063, Fourth International Symposium on Laser Precision Microfabrication, (18 November 2003); https://doi.org/10.1117/12.540758

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