Projects per year
Abstract
A tunable two-photon pumped solid-state laser based on polyfluorene is reported. A detailed investigation of the two-photon absorption in polyfluorene for both nanosecond and femtosecond time regimes in solution, and solid-state allows the determination of the most favorable conditions for lasing. Tunable distributed feedback lasers are made by spin coating from a polyfluorene solution on corrugated silica substrates and lasing is achieved under two-photon excitation at 640 nm with an absorbed energy density at lasing threshold of 1.3 mJ/cm(2). These results highlight an alternative pumping scheme for blue organic semiconductor lasers.
Original language | English |
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Article number | 253304 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 94 |
Issue number | 25 |
DOIs | |
Publication status | Published - 22 Jun 2009 |
Keywords
- distributed feedback lasers
- high-speed optical techniques
- laser tuning
- optical pumping
- organic semiconductors
- polymers
- semiconductor lasers
- two-photon processes
- DISTRIBUTED-FEEDBACK
- CONJUGATED POLYMERS
- ABSORPTION
- DIODES
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Dive into the research topics of 'A two-photon pumped polyfluorene laser'. Together they form a unique fingerprint.Projects
- 3 Finished
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EP/E062636/1 Polymer Photonic Devices: The Physics of Polymer Photonic Devices: Experiment and Theory
Samuel, I. D. W. (PI) & Turnbull, G. (CoI)
1/07/08 → 30/06/11
Project: Standard
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EPSRC Advanced Organic Optoelectronic Ma: Advanced Organic Optoelectronic Materials and Devices
Samuel, I. D. W. (PI)
1/01/07 → 31/12/09
Project: Standard
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EPSRC AOOMD Fellowship: Advanced Organic Optoelectronic Materials and Devices
Samuel, I. D. W. (PI)
1/03/06 → 28/02/11
Project: Fellowship