Improvement of the quasi-continuous-wave lasing properties in organic semiconductor lasers using oxygen as triplet quencher

Atula S.D. Sandanayaka, Li Zhao, Delphine Pitrat, Jean Christophe Mulatier, Toshinori Matsusima, Chantal Andraud, Ju Hyung Kim, Jean Charles Maurice Ribierre, Chihaya Adachi

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17 Citations (Scopus)

Abstract

We demonstrate quasi-continuous-wave lasing in solvent-free liquid organic semiconductor distributed feedback lasers based on a blend containing a liquid 9-(2-ethylhexyl)carbazole host doped with a blue-emitting heptafluorene derivative. The liquid gain medium is bubbled with either oxygen or nitrogen in order to investigate the role of a triplet quencher such as molecular oxygen on the quasi-continuous-wave lasing properties of organic semiconductor lasers. The oxygenated laser device exhibits a low threshold of 2 μJ cm-2, which is lower than that measured in the nitrogenated device and is independent of the repetition rate in a range between 0.01 and 4 MHz.

Original languageEnglish
Article number223301
JournalApplied Physics Letters
Volume108
Issue number22
DOIs
Publication statusPublished - May 30 2016

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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