Photochemistry of refractive index structures in poly(methyl methacrylate) by femtosecond laser irradiation

Baum, Alexandra; Scully, Patricia; Basanta, Maria; Thomas, C. L. Paul; Fielden, Peter R.; Goddard, N J; Perrie, Walter; Chalker, Paul R.

doi:10.1364/ol.32.000190

Cited by 81 publications

(53 citation statements)

References 6 publications

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“…Finally, the versatility of DLW suggests that fabricating electrical circuits and photonic components could be achieved using a single methodology. Coating materials that support DLW optical waveguides, such as glass [1,2] and polymers [49], with PI films may prove to be a viable platform for integrating optics and electronics.…”

Section: Discussionmentioning

confidence: 99%

Direct laser write process for 3D conductive carbon circuits in polyimide

2017

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Direct laser writing (DLW) is a versatile materials processing technique often applied to device prototyping. However, a fast and cost effective DLW process for fabricating three-dimensional (3D) conductor-insulator composites has yet to be demonstrated. In this work, polyimide (PI) is established as a viable platform for creating 3D graphitic circuits through ultrafast DLW. Under optimized processing conditions, graphitic material with a resistivity of 6 Ω·cm was formed in the laser irradiated regions. A thermal and microstructural material model is proposed for the non-linear DLW process and its graphitic products. The process is demonstrated to be an inexpensive and rapid technique for creating electrical contacts to nanoscale components. Future applications of the technique range from nanowire power generation to 3D integrated photonic and electronic devices.0a The

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Section: Discussionmentioning

confidence: 99%

Direct laser write process for 3D conductive carbon circuits in polyimide

2017

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“…Using this technique, waveguides have been demonstrated in different material systems including glasses and polymers [12][13][14][15][16][17][18][19]. Also, emission from these polymers upon irradiation with fs laser has been demonstrated which has applications in memory based devices [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Emission properties of femtosecond (fs) laser fabricated microstructures in Polystyrene (PS)

Deepak

Kuladeep

Rao

2011

Optics Communications

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“…One of the most important applications of this ability to modify the refractive index (RI) is in the field of photonics [4][5][6][7]. A variety of three-dimensional structures such as waveguides, couplers and gratings have been fabricated in PMMA and PDMS, which are useful for photonic and microfluidic applications [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. A comprehensive understanding of the interaction of femtosecond pulses with these materials with particular attention to their pulse duration, energies, shapes, focussing conditions etc.…”

Section: Introductionmentioning

confidence: 99%

Femtosecond laser-fabricated microstructures in bulk poly(methylmethacrylate) and poly(dimethylsiloxane) at 800 nm towards lab-on-a-chip applications

Deepak

Rao

2010

Pramana - J Phys

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Laser direct writing technique is employed to fabricate microstructures, including gratings (buried and surface) and two-dimensional photonic crystal-like structures, in bulk poly(methylmethacrylate) (PMMA) and poly(dimethylsiloxane) (PDMS) using ∼100 femtosecond (fs) pulses. The variation of structure size with different writing conditions (focussing, speed and energy) was investigated in detail. Diffraction efficiencies of the gratings were calculated and the changes in diffraction efficiency (DE) as a function of period, energy and scanning speed were evaluated. Highest diffraction efficiencies of 34% and 10%, for the first order, were obtained in PMMA and PDMS respectively. Heat treatment of these gratings demonstrated small improvement in the diffraction efficiency. Several applications resulting from these structures are discussed. Fs modification in PMMA and PDMS demonstrated emission when excited at a wavelength of 514 nm. We attempted to prepare buried waveguides in PMMA with higher refractive index at the core. We have successfully fabricated branched and curved structures in PMMA and PDMS finding impending applications in microfluidics.

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Photochemistry of refractive index structures in poly(methyl methacrylate) by femtosecond laser irradiation

Cited by 81 publications

References 6 publications

Direct laser write process for 3D conductive carbon circuits in polyimide

Direct laser write process for 3D conductive carbon circuits in polyimide

Emission properties of femtosecond (fs) laser fabricated microstructures in Polystyrene (PS)

Femtosecond laser-fabricated microstructures in bulk poly(methylmethacrylate) and poly(dimethylsiloxane) at 800 nm towards lab-on-a-chip applications

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