Femtosecond-laser direct writing in polymers and potential applications in microfluidics and memory devices

被引：15

作者：

Kallepalli, Lakshmi Narayana Deepak ^{[1
,2
]}

Rao, Soma Venugopal ^{[3
]}

Desai, Narayana Rao ^{[2
]}

机构：

[1] CNRS Aix Marseille Univ, Lab LP3, FR-13288 Marseille 9, France

[2] Univ Hyderabad, Sch Phys, Hyderabad 500046, Andhra Pradesh, India

[3] Univ Hyderabad, Adv Ctr Res High Energy Mat, Hyderabad 500046, Andhra Pradesh, India

来源：

OPTICAL ENGINEERING | 2012年 / 51卷 / 07期

关键词：

laser direct writing; diffraction grating; electron spin resonance; free radicals; waveguide; ELECTRON-SPIN-RESONANCE; POLY(METHYL METHACRYLATE); FREE-RADICALS; POLY(METHYLMETHACRYLATE); POLY(DIMETHYLSILOXANE); PULSES; MICROSTRUCTURES; BREAKDOWN; ABLATION; FILMS;

D O I：

10.1117/1.OE.51.7.073402

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have investigated femtosecond-laser-induced microstructures (on the surface and within the bulk), gratings, and craters in four different polymers: polymethyl methacrylate, polydimethylsiloxane, polystyrene, and polyvinyl alcohol. The structures were achieved using a Ti:sapphire laser delivering 100-fs pulses at 800 nm with a repetition rate of 1 kHz and a maximum pulse energy of 1 mJ. Local chemical modifications leading to the formation of optical centers and peroxide radicals were studied using ultraviolet-visible absorption and emission, confocal micro-Raman and electron spin resonance spectroscopic techniques. Potential applications of these structures in microfluidics, waveguides, and memory-based devices are demonstrated. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.7.073402]

引用

页数：6

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