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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea


  • Vol. 9, Iss. 3 — Sep. 25, 2005
  • pp: 92–94

Femtosecond Laser Application to Optical Memory and Microfluidics

Ik-Bu Sohn, Man-Seop Lee, Jeong-Sik Woo, Sang-Man Lee, and Jeong-Yong Chung  »View Author Affiliations

Journal of the Optical Society of Korea, Vol. 9, Issue 3, pp. 92-94 (2005)

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We present a novel method for three-dimensional optical memory and microchannel embedded in fused silica glass. Three-dimensional dot patterning with a femtosecond laser pulse and observation with optical microscope are performed. Dot patterns are created by use of a 0.42 N.A. objective to focus 100 fs laser pulses inside the material. We demonstrate data storage with <TEX>$2{\mu}m$</TEX> dot pitch and <TEX>$7{\mu}m$</TEX>layer spacing <TEX>$(36 Gbit/cm^3)$</TEX>. A three-dimensional microchannel acting as microfluidic and microoptical components is directly fabricated inside a silica glass. The optical micrographs of the microchannel are obtained by a digital camera of a microscope.

© 2005 Optical Society of Korea

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(140.3390) Lasers and laser optics : Laser materials processing
(230.1360) Optical devices : Beam splitters
(230.7370) Optical devices : Waveguides

Original Manuscript: May 23, 2005
Revised Manuscript: July 21, 2005
Published: September 1, 2005

Ik-Bu Sohn, Man-Seop Lee, Jeong-Sik Woo, Sang-Man Lee, and Jeong-Yong Chung, "Femtosecond Laser Application to Optical Memory and Microfluidics," J. Opt. Soc. Korea 9, 92-94 (2005)

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  1. S. Juodkazis, S. Matsuo, H. Misawa, V. Mizeikis, A. Marcinkevicius, H. B. Sun, Y. Tokuda, M. Takahashi, T. Yoko, J. Nushii, "Application of femtosecond laser pulse for microfabrication of transparent media," Appl. Surf Scien., 197-198, pp. 705-709, 2002 [CrossRef]
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  7. E. N. Glezer, M. Milosavljevic, L. Juang, R. J. Finlay, T. H. Her, J. P. Callan, and E. Mazure, "Three-dimensional optical storage inside transparent materials," Opt. Lett., vol. 21, pp. 2023-2025, 1996 [CrossRef]
  8. Ya Cheng, Koji Sugioka, Katsumi Midorikawa, "Microfabrication of 3D hollow structures embedded in glass by femtosecond laser for Lab-on-a-chip applications," Appl. Surface Science, 2005 [CrossRef]
  9. C. B. Schaffer, T. N. Kim, K. N. Campbell, A. N. Groisman, D. N. Kleinfeld, "Machining microfluidic devices in PDMS using femtosecond laser pulses," Photonics West, 5713A, 2005

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