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

Yue Wang, Georgios Tsiminis, Ying Yang, Arvydas Ruseckas, Alexander L. Kanibolotsky, Igor F. Perepichka, Peter Skabara, Graham A. Turnbull, Ifor D. W. Samuel

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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.

Original languageEnglish
Pages (from-to)1397-1400
Number of pages4
JournalSynthetic Metals
Volume160
Issue number13-14
DOIs
Publication statusPublished - Jul 2010

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Keywords

  • lasers
  • oligofluorene truxene
  • amplified spontaneous emission

Cite this

Wang, Y., Tsiminis, G., Yang, Y., Ruseckas, A., Kanibolotsky, A. L., Perepichka, I. F., ... Samuel, I. D. W. (2010). Broadly tunable deep blue laser based on a star-shaped oligofluorene truxene. Synthetic Metals, 160(13-14), 1397-1400. https://doi.org/10.1016/j.synthmet.2010.04.016