Picture of athlete cycling

Open Access research with a real impact on health...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

Explore open research content by Physical Activity for Health...

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.