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Glass modification by continuous-wave laser backside irradiation (CW-LBI)

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Abstract

We report on a permanent change in the physical properties inside glass that is rapidly heated and quenched with a continuous-wave (CW) laser beam. The absorption of the glass was enhanced by laser heating, and the heated spot moved by thermal radiation and conduction. To trigger the heating, an absorbent material was placed on the backside of a glass plate and irradiated through the glass. The laser beam can modify borosilicate glass with a high aspect ratio (∼100:1) at a rate of ∼130 mm/s. The modified zone consists of two concentric cylindrical zones and is crack-free.

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Authors and Affiliations

  1. Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8550, Japan

    Hirofumi Hidai, Masato Yoshioka, Kuniaki Hiromatsu & Hitoshi Tokura

  2. Research Center, AGC Asahi Glass Co., Ltd., 1-1, Suehiro-cho, Tsurumi-ku, Yokohama-shi, Kanagawa, 230-0045, Japan

    Kuniaki Hiromatsu

Authors
  1. Hirofumi Hidai
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  2. Masato Yoshioka
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  3. Kuniaki Hiromatsu
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  4. Hitoshi Tokura
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Correspondence to Hirofumi Hidai.

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Hidai, H., Yoshioka, M., Hiromatsu, K. et al. Glass modification by continuous-wave laser backside irradiation (CW-LBI). Appl. Phys. A 96, 869–872 (2009). https://doi.org/10.1007/s00339-009-5324-x

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  • DOI: https://doi.org/10.1007/s00339-009-5324-x

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