Improvement of amplified spontaneous emission performance by doping tris(8-hydroxyquinoline) aluminum (Alq) in dye-doped polymer thin films
Applied Optics, ISSN: 1539-4522, Vol: 46, Issue: 12, Page: 2320-2324
2007
- 11Citations
- 6Captures
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Article Description
A well-known red fluorescent dye 4-(dicy-anomethylene)-2-t-butyl-6(1,1,7,7- tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB) was codoped with an electron transport organic molecule tris(8-hydroxyquinoline) aluminum (Alq) in a host matrix of polystyrene (PS), and the amplified spontaneous emission (ASE) was studied by optically pumping. It was found that the ASE performance was significantly improved by the introduction of Alq. The Alq :DCJTB:PS blending thin films showed a low threshold (2.4 μJ/pulse) and a high net gain coefficient (109.95 cm) compared with the pure DCJTB:PS system (threshold of 15.2 μJ/pulse and gain of 35.94 cm). The improvement of the ASE performance was considered to be attributable to the effective Foster energy transfer from Alq to DCJTB. Our results demonstrate that the Alq:DCJTB could be a promising candidate as gain medium for red organic diode lasers. © 2007 Optical Society of America.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=34250758628&origin=inward; http://dx.doi.org/10.1364/ao.46.002320; http://www.ncbi.nlm.nih.gov/pubmed/17415402; https://www.osapublishing.org/abstract.cfm?URI=ao-46-12-2320; https://www.osapublishing.org/viewmedia.cfm?URI=ao-46-12-2320&seq=0; https://opg.optica.org/abstract.cfm?URI=ao-46-12-2320; https://dx.doi.org/10.1364/ao.46.002320; https://opg.optica.org/ao/abstract.cfm?uri=ao-46-12-2320
The Optical Society
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