A two-photon pumped polyfluorene laser

Tsiminis, Georgios; Ruseckas, Arvydas; Samuel, Ifor D. W.; Turnbull, Graham A.
June 2009
Applied Physics Letters;6/22/2009, Vol. 94 Issue 25, p253304
Academic Journal
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/cm2. These results highlight an alternative pumping scheme for blue organic semiconductor lasers.


Related Articles

  • Stimulated emission and optical gain in ZnO epilayers grown by plasma-assisted molecular-beam epitaxy with buffers. Chen, Yefan; Tuan, N. T.; Segawa, Yusaburo; Ko, Hang-ju; Hong, Soon-ku; Yao, Takafumi // Applied Physics Letters;3/12/2001, Vol. 78 Issue 11, p1469 

    We report the results of an experimental investigation on lasing mechanisms in optically pumped ZnO epilayers at room temperature. High-quality ZnO epilayers grown on sapphire by plasma-assisted molecular-beam epitaxy employing an MgO buffer were used. Free exciton emissions and their phonon...

  • A GaAs polariton light-emitting diode operating near room temperature. Tsintzos, S. I.; Pelekanos, N. T.; Konstantinidis, G.; Hatzopoulos, Z.; Savvidis, P. G. // Nature;5/15/2008, Vol. 453 Issue 7193, p372 

    The increasing ability to control light–matter interactions at the nanometre scale has improved the performance of semiconductor lasers in the past decade. The ultimate optimization is realized in semiconductor microcavities, in which strong coupling between quantum-well excitons and...

  • Control of surface-emitting laser diodes by modulating the distributed Bragg mirror reflectivity.... Avrutin, E.A.; Gorfinkel, V.B. // Applied Physics Letters;11/1/1993, Vol. 63 Issue 18, p2460 

    Presents scheme to control the photon lifetime in the laser cavity by a modulation of the reflectivity of cavity mirrors. Contrast between Bragg mirror reflectivity with the conventional method of modulating semiconductor lasers; Proposal of Yamamoto and Bjork; Manifestation of...

  • Noise squeezing in a semiconductor laser with an inhomogeneously broadened gain line. Kozlov, V. V.; Trifonov, A. S. // Journal of Experimental & Theoretical Physics;Aug97, Vol. 85 Issue 2, p234 

    This paper is a theoretical analysis of the noise produced by a single-mode semiconductor laser. We allow for spectral hole-burning in the gain line and for the nonlinear dependence of the carrier spontaneous recombination rate on the number of carriers in the active area. We show that these...

  • Evanescent and propagating wave characteristics of the photonic quantum ring laser. Park, B. H.; Ahn, J. C.; Bae, J.; Kim, J. Y.; Kim, M. S.; Baek, S. D.; Kwon, O’Dae // Applied Physics Letters;9/10/2001, Vol. 79 Issue 11 

    We present the wave propagation characteristics of photonic quantum ring lasers with clear evidence of the evanescence-propagation crossover behavior. The data obtained from the fiber probe measurements of 15–36 μm disk size lasers show that the Rayleigh’s whispering gallery...

  • Quantum ring confines photons in wire laser. Hecht, Jeff // Laser Focus World;Aug95, Vol. 31 Issue 8, p24 

    Reports on the photon-wire semiconductor laser which confines photons in a stripe on the order of 400 nanometer wide in InGaAsP. Features of the lasers; Process of developing the lasers; Advantages; Applications.

  • Advances in semiconductor lasers. Suematsu, Yasuharu // Physics Today;May85, Vol. 38 Issue 5, p32 

    Examines the capability of semiconductor junction lasers. Representation of a central building block of photonics; Shift of operation to the optimal wavelengths for fiberoptics; Improvement of laser reliability and spectral purity.

  • The use of Einstein’s coefficients to predict the theory of operation of a semiconductor laser. Taylor, G. W. // Journal of Applied Physics;10/1/1990, Vol. 68 Issue 7, p3122 

    Presents a study on the formulation of the rate equation for the semiconductor laser in terms of the appropriate Einstein coefficients. Details on the rate equations; Determination of photon density; Determination of quasi-fermi levels.

  • Photon noise correlations in electrically coupled semiconductor lasers. Mayer, P. M.; Rana, F.; Ram, R. J. // Applied Physics Letters;2/3/2003, Vol. 82 Issue 5, p689 

    Measurements of the correlation between the photon noise of two semiconductor lasers sharing a bias circuit are presented. The photon noise of the electrically coupled lasers is found to be correlated by as much as 70%. The photon noise correlations are measured at low frequencies as a function...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics