Healing of micro-cracks in optical glass using a pulsed laser

Nozomi Takayama, Yuta Nishide, Jiwang Yan

研究成果: Conference contribution

抄録

Optical glasses are used in a wide range of applications such as lenses in cameras and projectors, medical instruments and window panes. It is highly important to remove cracks in glass in order to prevent breakage, to prolong the lifetime of the glass part and to prevent injury to the user. In this study, the possibility of healing cracks in glass using laser irradiation is presented. Micro-indents, generated under indenting loads, were irradiated using a pulsed laser with a wavelength of 1064 nm using various coating materials at various laser fluences. The results show that laser irradiation greatly decreases the depth of the indents and closes the subsurface cracks. This is due to laser light interaction with glass and coating materials leading to a localized high temperature and the softening of glass.

元の言語English
ホスト出版物のタイトルProceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017
出版者Japan Society of Mechanical Engineers
出版物ステータスPublished - 2017 11 13
イベント9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017 - Hiroshima City, Japan
継続期間: 2017 11 132017 11 17

Other

Other9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017
Japan
Hiroshima City
期間17/11/1317/11/17

Fingerprint

Optical glass
Pulsed lasers
Cracks
Glass
Laser beam effects
Glass lasers
Coatings
Lasers
Lenses
Cameras
Wavelength
Temperature

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

これを引用

Takayama, N., Nishide, Y., & Yan, J. (2017). Healing of micro-cracks in optical glass using a pulsed laser. : Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017 [069] Japan Society of Mechanical Engineers.

Healing of micro-cracks in optical glass using a pulsed laser. / Takayama, Nozomi; Nishide, Yuta; Yan, Jiwang.

Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017. Japan Society of Mechanical Engineers, 2017. 069.

研究成果: Conference contribution

Takayama, N, Nishide, Y & Yan, J 2017, Healing of micro-cracks in optical glass using a pulsed laser. : Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017., 069, Japan Society of Mechanical Engineers, 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017, Hiroshima City, Japan, 17/11/13.
Takayama N, Nishide Y, Yan J. Healing of micro-cracks in optical glass using a pulsed laser. : Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017. Japan Society of Mechanical Engineers. 2017. 069
Takayama, Nozomi ; Nishide, Yuta ; Yan, Jiwang. / Healing of micro-cracks in optical glass using a pulsed laser. Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017. Japan Society of Mechanical Engineers, 2017.
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AB - Optical glasses are used in a wide range of applications such as lenses in cameras and projectors, medical instruments and window panes. It is highly important to remove cracks in glass in order to prevent breakage, to prolong the lifetime of the glass part and to prevent injury to the user. In this study, the possibility of healing cracks in glass using laser irradiation is presented. Micro-indents, generated under indenting loads, were irradiated using a pulsed laser with a wavelength of 1064 nm using various coating materials at various laser fluences. The results show that laser irradiation greatly decreases the depth of the indents and closes the subsurface cracks. This is due to laser light interaction with glass and coating materials leading to a localized high temperature and the softening of glass.

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