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Chinese Optics Letters

Chinese Optics Letters


  • Vol. 6, Iss. 2 — Feb. 1, 2008
  • pp: 108–111

Surface characteristics of SiO2-TiO2 strip fabricated by laser direct writing

Aikui Li, Zemin Wang, Jiajun Liu, Xiaoyan Zeng, Chunxia Wang, and Hongda Chen  »View Author Affiliations

Chinese Optics Letters, Vol. 6, Issue 2, pp. 108-111 (2008)

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SiO2-TiO2 sol-gel films are deposited on SiO2/Si by dip-coating technique. The SiO2-TiO2 strips are fabricated by laser direct writing using an ytterbium fiber laser and followed by chemical etching. Surface structures, morphologies and roughness of the films and strips are characterized. The experimental results demonstrate that the SiO2-TiO2 sol-gel film is loose in structure and a shrinkage concave groove forms if the film is irradiated by laser beam. The surface roughness of both non-irradiated and laser irradiated areas increases with the chemical etching time. But the roughness of laser irradiated area increases more than that of non-irradiated area under the same etching time. After being etched for 28 s, the surface roughness value of the laser irradiated area increases from 0.3 nm to 3.1 nm.

© 2008 Chinese Optics Letters

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(160.4760) Materials : Optical properties
(160.6060) Materials : Solgel
(310.3840) Thin films : Materials and process characterization

Aikui Li, Zemin Wang, Jiajun Liu, Xiaoyan Zeng, Chunxia Wang, and Hongda Chen, "Surface characteristics of SiO2-TiO2 strip fabricated by laser direct writing," Chin. Opt. Lett. 6, 108-111 (2008)

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