Abstract

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

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