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Volume 174, 2014
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Organic semiconductor distributed feedback laser pixels for lab-on-a-chip applications fabricated by laser-assisted replication

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Abstract

The integration of organic semiconductor distributed feedback (DFB) laser sources into all-polymer chips is promising for biomedical or chemical analysis. However, the fabrication of DFB corrugations is often expensive and time-consuming. Here, we apply the method of laser-assisted replication using a near-infrared diode laser beam to efficiently fabricate inexpensive poly(methyl methacrylate) (PMMA) chips with spatially localized organic DFB laser pixels. This time-saving fabrication process enables a pre-defined positioning of nanoscale corrugations on the chip and a simultaneous generation of nanoscale gratings for organic edge-emitting laser pixels next to microscale waveguide structures. A single chip of size 30 mm × 30 mm can be processed within 5 min. Laser-assisted replication allows for the subsequent addition of further nanostructures without a negative impact on the existing photonic components. The minimum replication area can be defined as being as small as the diode laser beam focus spot size. To complete the fabrication process, we encapsulate the chip in PMMA using laser transmission welding.

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Publication details

The article was received on 22 Apr 2014, accepted on 03 Jun 2014 and first published on 07 Aug 2014


Article type: Paper
DOI: 10.1039/C4FD00077C
Citation: Faraday Discuss., 2014,174, 153-164
  • Open access: Creative Commons BY license
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    Organic semiconductor distributed feedback laser pixels for lab-on-a-chip applications fabricated by laser-assisted replication

    X. Liu, S. Prinz, H. Besser, W. Pfleging, M. Wissmann, C. Vannahme, M. Guttmann, T. Mappes, S. Koeber, C. Koos and U. Lemmer, Faraday Discuss., 2014, 174, 153
    DOI: 10.1039/C4FD00077C

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