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Proceedings Paper

Formation of cylindrical micro-lens array in fused silica glass using laser irradiations
Author(s): Hun-Kook Choi; Md. Shamim Ahsan; Dongyoon Yoo; Ik-Bu Sohn; Young-Chul Noh; Jin Tae Kim; Deok Jung; Jin Hyeok Kim
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Paper Abstract

In this article, we report the development of plano-convex cylindrical micro-lens array on the surface of fused silica glass using laser processing technology. Initially, femtosecond laser pulses are irradiated on the target fused silica glass substrate to pattern periodic micro-grooves. Afterwards, laser beam from CO2 laser source is applied several times on the previously micro-patterned fused silica glass surface, the purpose of which is to polish the micro-patterned glass surface. As a consequence, periodic plano-convex cylindrical micro-lens array is evolved on the glass surface. The micro-lens array shows great consistency in size and shape throughout the sample area. We also investigate various optical properties of the micro-lenses evolved glass substrates including the diffraction pattern and diffraction efficiency of light. The glass sample comprising cylindrical micro-lens array can diffract light with moderate diffraction efficiency. We strongly believe that, it is possible to engineer cylindrical micro-lens array on the surface of a variety of transparent materials including glasses and polymers over a large area.

Paper Details

Date Published: 7 December 2013
PDF: 7 pages
Proc. SPIE 8923, Micro/Nano Materials, Devices, and Systems, 89234T (7 December 2013); doi: 10.1117/12.2033772
Show Author Affiliations
Hun-Kook Choi, Gwangju Institute of Science and Technology (Korea, Republic of)
Chosun Univ. (Korea, Republic of)
Md. Shamim Ahsan, Gwangju Institute of Science and Technology (Korea, Republic of)
Khulna Univ. (Bangladesh)
Dongyoon Yoo, Gwangju Institute of Science and Technology (Korea, Republic of)
Ik-Bu Sohn, Gwangju Institute of Science and Technology (Korea, Republic of)
Young-Chul Noh, Gwangju Institute of Science and Technology (Korea, Republic of)
Jin Tae Kim, Chosun Univ. (Korea, Republic of)
Deok Jung, Chonnam National Univ. (Korea, Republic of)
Jin Hyeok Kim, Chonnam National Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 8923:
Micro/Nano Materials, Devices, and Systems
James Friend; H. Hoe Tan, Editor(s)

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