Femtosecond laser application to optical memory and microfluidics

다국어 초록 (Multilingual 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 2 μm dot pitch and 7 μm layer spacing (36 Gbit/cm3). 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.

참고문헌 (Reference)

1 "Writing waveguides and gratings in silica and related materials by a femtosecond laser" 239 : 91-95, 1998.

2 "Nano-structuring of transparent materials by femtosecond laser" 9 : 1-5, 2005.

3 "Microfabrication of 3D hollow structures embedded in glass by femtosecond laser for Lab-on-a-chip applications" 2005.

4 "Machining microfluidic devices in PDMS using femtosecond laser pulses" 2005.

5 "Fiber Bragg gratings with suppressed cladding modes made in SMF-28 with a femtosecond IR laser and a phase mask" 16 : 1864-1866, 2004.

6 "Femtosecond micromachining applications for optical devices" 8 : 127-131, 2004.

7 "Fabrication and characterization of photonic devices directly written in glass using femtosecond laser pulses" 21 : 246-253, 2003.

8 "Application of femtosecond laser pulse for microfabrication of transparent media" 197-198 : 705-709, 2002.