A polythiophene microcavity laser
1998 (English)In: Chemical Physics Letters, ISSN 0009-2614, E-ISSN 1873-4448, Vol. 288, no 5-6, 879-884 p.Article in journal (Refereed) Published
We report photopumped lasing in a microcavity device with a polythiophene layer as the emitter. These microcavity devices are built by joining two polymer coated dielectric mirrors at elevated temperature. When photopumping the film, a lasing threshold is observed at 120 nJ/cm(2). Comparative studies with fast pump-probe spectroscopy of thin polythiophene films and the same polymer in photopumped lasing studies, indicate that the gain coefficient is 80 +/- 20 cm(-1), and that the exciton concentration is 2 X 10(17) cm(-3) at the lasing transition, well below the exciton-exciton recombination level. (C) 1998 Elsevier Science B.V. All rights reserved.
Place, publisher, year, edition, pages
Elsevier , 1998. Vol. 288, no 5-6, 879-884 p.
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-74870DOI: 10.1016/S0009-2614(98)00320-0ISI: 000074285700043OAI: oai:DiVA.org:liu-74870DiVA: diva2:496795