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Optics Letters

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  • Vol. 28, Iss. 1 — Jan. 1, 2003
  • pp: 55–57

Control of the cross-sectional shape of a hollow microchannel embedded in photostructurable glass by use of a femtosecond laser

Ya Cheng, Koji Sugioka, Katsumi Midorikawa, Masashi Masuda, Koichi Toyoda, Masako Kawachi, and Kazuhiko Shihoyama  »View Author Affiliations


Optics Letters, Vol. 28, Issue 1, pp. 55-57 (2003)
http://dx.doi.org/10.1364/OL.28.000055


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Abstract

Theoretical and experimental investigations have been made of the three-dimensional microchannel fabrication of photostructurable glass by use of a femtosecond (fs) laser. Generally, a microchannel fabricated inside glass by the scanning focal spot of a fs laser perpendicular to the direction of laser propagation assumes an elliptical shape with a cross section of large aspect ratio. We demonstrate that one can greatly reduce the aspect ratio merely by inserting a slit, which is oriented parallel to the laser’s scanning direction, before the focusing lens. Computer simulations show that a more symmetrical pattern is obtained in the vicinity of the focal point with the help of such a slit, owing essentially to a diffraction effect.

© 2003 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(140.7090) Lasers and laser optics : Ultrafast lasers
(270.4180) Quantum optics : Multiphoton processes
(350.3390) Other areas of optics : Laser materials processing

Citation
Ya Cheng, Koji Sugioka, Katsumi Midorikawa, Masashi Masuda, Koichi Toyoda, Masako Kawachi, and Kazuhiko Shihoyama, "Control of the cross-sectional shape of a hollow microchannel embedded in photostructurable glass by use of a femtosecond laser," Opt. Lett. 28, 55-57 (2003)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-28-1-55


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References

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