Journal
APPLIED PHYSICS LETTERS
Volume 97, Issue 19, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3509405
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Funding
- EPSRC [RG 432863 KJZA/051]
- Swiss National Science Foundation [PBEL22-110258]
- Engineering and Physical Sciences Research Council [GR/R45680/01] Funding Source: researchfish
- Medical Research Council [qA137861b] Funding Source: researchfish
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Herein we report a low-threshold organic laser device based on semiconducting poly(9,9'-dioctylfluoren-2,7-diyl-alt-benzothiadiazole) (F8BT) encapsulated in a mechanically stretchable polydimethylsiloxane (PDMS) matrix. We take advantage of the natural flexibility of PDMS to alter the periodicity of the distributed feedback grating which in turn tunes the gain wavelength at which the resonant feedback is obtained. This way, we demonstrate that low-threshold lasing [6.1 mu J cm(-2) (5.3 nJ)] is maintained over a large stretching range of 0%-7% which translates into a tuning range of about 20 nm. (C) 2010 American Institute of Physics. [doi:10.1063/1.3509405]
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