Picture of automobile manufacturing plant

Driving innovations in manufacturing: Open Access research from DMEM

Strathprints makes available Open Access scholarly outputs by Strathclyde's Department of Design, Manufacture & Engineering Management (DMEM).

Centred on the vision of 'Delivering Total Engineering', DMEM is a centre for excellence in the processes, systems and technologies needed to support and enable engineering from concept to remanufacture. From user-centred design to sustainable design, from manufacturing operations to remanufacturing, from advanced materials research to systems engineering.

Explore Open Access research by DMEM...

Mechanically flexible organic semiconductor laser array

Guilhabert, B. and Laurand, N. and Herrnsdorf, J. and Chen, Y. and Kanibolotsky, A. L. and Orofino, C. and Skabara, P. J. and Dawson, M. D. (2012) Mechanically flexible organic semiconductor laser array. IEEE Photonics Journal, 4 (3). pp. 684-690. ISSN 1943-0655

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

We report the fabrication and characterization of a mechanically flexible 4 x 4 array of organic semiconductor lasers using blue-emitting tris(trifluorene) truxene oligomers as the gain medium. The device was fabricated entirely by soft lithography from the reproduction of a 1-D silica master grating. The grating array pattern was created directly on the master by a polymeric mask. Each element, or pixel, of the resulting laser array is made of a polymer mesa with embedded surface grating, and all the array elements are on the same mechanically flexible platform. Laser oscillation thresholds of individual photopumped laser pixels are as low as 75 nJ (70 mu J/cm(2) or 14 kW/cm(2)). The emission wavelength uniformity of the array is within +/- 3 nm with individual laser pixels emitting from 432 to 438 nm. On mechanical flexing of the array, a 10-nm tuning of the emission wavelength is achieved and is attributed to a change in the grating periodicity.