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Proceedings Paper

Microstructural modification of lithium niobate crystal induced by femtosecond laser ablation
Author(s): Benhai Yu; Deheng Shi; Qiguang Zheng; Peixiang Lu
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Paper Abstract

The morphology and mechanism of lithium niobate (LiNbO3) crystal ablated by a femtosecond laser pulse have been investigated. The ablated spots have been examined by means of scanning electron microscopy (SEM) and atom force microscopy (AFM). Sub-diffraction limit spots in LiNbO3 crystal ablated by femtosecond laser have been obtained. The diameter of ablation spot is 400 nm and 800 nm when 170 nJ single pulse and 100 nJ, 17 pulses were used, respectively. There were about 200nm periodic ripples on the bottom surfaces of the spots at low laser energy. The result shows that the sub-diffraction limit structures may be formed by the multi-photon excitation, and the femtosecond laser ablation is an innovative tool for manufacturing LiNbO3-based optical devices.

Paper Details

Date Published: 19 February 2008
PDF: 9 pages
Proc. SPIE 6625, International Symposium on Photoelectronic Detection and Imaging 2007: Related Technologies and Applications, 66251Z (19 February 2008); doi: 10.1117/12.791237
Show Author Affiliations
Benhai Yu, Huazhong Univ. of Science and Technology (China)
Xinyang Normal Univ. (China)
Deheng Shi, Xinyang Normal Univ. (China)
Qiguang Zheng, Huazhong Univ. of Science and Technology (China)
Peixiang Lu, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 6625:
International Symposium on Photoelectronic Detection and Imaging 2007: Related Technologies and Applications

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