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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.

Item type: Article
ID code: 28458
Keywords: lasers, oligofluorene truxene, amplified spontaneous emission, Electrical engineering. Electronics Nuclear engineering, Chemistry, Physical and theoretical chemistry, Materials Chemistry, Mechanics of Materials, Metals and Alloys, Mechanical Engineering, Electronic, Optical and Magnetic Materials, Condensed Matter Physics
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Science > Chemistry
Science > Chemistry > Physical and theoretical chemistry
Department: Faculty of Engineering > Electronic and Electrical Engineering
Faculty of Science > Pure and Applied Chemistry
Depositing user: Mrs Roslyn MacDonald
Date Deposited: 13 May 2011 12:22
Last modified: 19 Jun 2015 04:03
Related URLs:
URI: http://strathprints.strath.ac.uk/id/eprint/28458

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