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Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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Broadly tunable deep blue laser based on a star-shaped oligofluorene truxene

Wang, Yue and Tsiminis, Georgios and Yang, Ying and Ruseckas, Arvydas and Kanibolotsky, Alexander L. and Perepichka, Igor F. and Skabara, Peter and Turnbull, Graham A. and Samuel, Ifor D. W. (2010) Broadly tunable deep blue laser based on a star-shaped oligofluorene truxene. Synthetic Metals, 160 (13-14). pp. 1397-1400. ISSN 0379-6779

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Abstract

We report amplified spontaneous emission (ASE) and optically pumped deep-blue-emitting distributed feedback (DFB) lasers based on a star-shaped oligofluorene truxene molecule. A low ASE threshold of 2.1 kW/cm(2) at 439 nm was achieved. The material exhibits a high net gain of 38 cm(-1) and also low optical loss coefficient of 3.5 cm(-1). Second-order DFB lasers show tuning of the emission wavelength from 422 to 473 nm, and a minimum threshold density of 515 W/cm(2). This is the broadest tuning range (51 nm) reported for organic deep-blue/blue lasing materials. (C) 2010 Elsevier B.V. All rights reserved.