CUED Publications database

Mechanically tunable conjugated polymer distributed feedback lasers

Wenger, B and T́treault, N and Welland, ME and Friend, RH (2010) Mechanically tunable conjugated polymer distributed feedback lasers. Applied Physics Letters, 97. ISSN 0003-6951

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Abstract

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 μJ 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. © 2010 American Institute of Physics.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:20
Last Modified: 08 Dec 2014 02:29
DOI: 10.1063/1.3509405