title: Semiconducting polymer waveguides for end-fired ultra-fast optical amplifiers.
abstract: A method to fabricate conjugated polymer waveguides with well defined edge facets is demonstrated. The utility of the approach is explored for application as end-fired ultrafast optical amplifiers based on poly(9,9'-dioctylfluorene-co-benzothiadiazole). An internal gain of 19 dB was achieved on a 760 microm long waveguide at 565 nm wavelength. This fabrication procedure may be applied to a wide range of conjugated polymers and organic light-emitting devices, providing an important step towards future applications of organic integrated photonics.
authors.affiliation: Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, Fife, UK.
authors.forename: Ning
authors.initials: N
authors.lastname: Liu
authors.forename: Arvydas
authors.initials: A
authors.lastname: Ruseckas
authors.forename: Neil A
authors.initials: NA
authors.lastname: Montgomery
authors.forename: Ifor D W
authors.initials: ID
authors.lastname: Samuel
authors.forename: Graham A
authors.initials: GA
authors.lastname: Turnbull
mesh_terms: D000669:Amplifiers, Electronic; D052160:Benzothiazoles / Q000737:chemistry; D004867:Equipment Design; D005449:Fluorenes / Q000737:chemistry; D008027:Light; D008854:Microscopy, Electron / Q000379:methods; D055096:Optical Devices; D055095:Optics and Photonics / Q000379:methods*; D009991:Oscillometry / Q000379:methods; D011108:Polymers / Q000737:chemistry*; D012666:Semiconductors
chemical_list: D052160:Benzothiazoles; D005449:Fluorenes; D011108:Polymers; C505505:poly(9,9-di-n-octylfluorene-alt-benzothiadiazole)