Low threshold electrically pumped quantum dot-micropillar lasers

Reitzentein, S.; Heindel, T.; Kistner, C.; Rahimi-Iman, A.; Schneider, C.; Höfling, S.; Forchel, A.
August 2008
Applied Physics Letters;8/11/2008, Vol. 93 Issue 6, p061104
Academic Journal
We report on low threshold lasing in electrically pumped quantum dot-micropillar cavities. Lasing action associated with threshold currents as low as 8 μA at 10 K is observed for micropillar cavities with quality factors exceeding 10.000. Due to an optimized contact scheme lasing is achieved for pillar structures with diameters as small as 1.5 μm, containing on average less than 100 quantum dots in the active layer. The transition from spontaneous to stimulated emission is confirmed by autocorrelation measurements which reveal pronounced photon bunching near threshold.


Related Articles

  • Proposal for efficient mode converter based on cavity quantum electrodynamics dark mode in a semiconductor quantum dot coupled to a bimodal microcavity. Jiahua Li; Rong Yu; Jinyong Ma; Ying Wu // Journal of Applied Physics;2014, Vol. 116 Issue 16, p164306-1 

    The ability to engineer and convert photons between different modes in a solid-state approach has extensive technological implications not only for classical communication systems but also for future quantum networks. In this paper, we put forward a scheme for coherent mode conversion of optical...

  • Demonstration of high-Q (>8600) three-dimensional photonic crystal nanocavity embedding quantum dots. Tandaechanurat, A.; Ishida, S.; Aoki, K.; Guimard, D.; Nomura, M.; Iwamoto, S.; Arakawa, Y. // Applied Physics Letters;4/27/2009, Vol. 94 Issue 17, p171115 

    The authors report on an experimental demonstration of coupling of quantum dots with a point-defect nanocavity in woodpile three-dimensional (3D) photonic crystal (PhC) with the highest quality (Q) factor among those for 3D PhC cavities. The Q factor of more than 8600 was achieved by stacking 25...

  • Dynamics of a two-state quantum dot laser with saturable absorber. Viktorov, E. A.; Cataluna, M. A.; O’Faolain, L.; Krauss, T. F.; Sibbett, W.; Rafailov, E. U.; Mandel, Paul // Applied Physics Letters;3/19/2007, Vol. 90 Issue 12, p121113 

    The authors study the regime of self-pulsations in a two-state quantum dot laser with saturable absorber. Experiments demonstrate and theory explains the appearance of self-pulsations at low relaxation oscillation frequency. The system exhibits a period doubling sequence of bifurcations leading...

  • Detection of single photons using a field-effect transistor gated by a layer of quantum dots. Shields, A. J.; Shields, A.J.; O'Sullivan, M. P.; O'Sullivan, M.P.; Farrer, I.; Ritchie, D. A.; Ritche, D.A.; Hogg, R. A.; Hogg, R.A.; Leadbeater, M. L.; Leadbeater, M.L.; Norman, C. E.; Norman, C.E.; Pepper, M. // Applied Physics Letters;6/19/2000, Vol. 76 Issue 25 

    We demonstrate that the conductance of a field-effect transistor (FET) gated by a layer of nanometer-sized quantum dots is sensitive to the absorption of single photons. Rather than relying upon an avalanche process, as in conventional semiconductor single-photon detectors, the gain in this...

  • Enhanced photoluminescence from embedded PbSe colloidal quantum dots in silicon-based random photonic crystal microcavities. Jun Yang; Junseok Heo; Ting Zhu; Jian Xu; Topolancik, Juraj; Vollmer, Frank; Ilic, Rob; Bhattacharya, Pallab // Applied Physics Letters;6/30/2008, Vol. 92 Issue 26, p261110 

    The experimental observation of enhanced photoluminescence from high-Q silicon-based random photonic crystal microcavities embedded with PbSe colloidal quantum dots is being reported. The emission is optically excited at room temperature by a continuous-wave Ti-sapphire laser and exhibits...

  • Photoluminescence study of high density Si quantum dots with Ge core. Kondo, K.; Makihara, K.; Ikeda, M.; Miyazaki, S. // Journal of Applied Physics;2016, Vol. 119 Issue 3, p1 

    Si quantum dots (Si-QDs) with Ge core were self-assembled on thermally grown SiO2 from alternate thermal decomposition of pure SiH4 and GeH4 diluted with He. When the sample was excited by the 979 nm line of a semiconductor laser, fairly broad photoluminescence (PL) spectra in the region of...

  • Our choice from the recent literature.  // Nature Photonics;Mar2011, Vol. 5 Issue 3, p128 

    The article presents several research related to photonics. It denotes the weak interaction between the quantum dots despite their advantages in boosting exciton qubits' coherent manipulation. Meanwhile, it denotes the wide spectral coverage feature of the organic lasers and cites their...

  • Dot-in-a-dot: electronic and photonic confinement in all three dimensions. Woggon, U.; Wannemacher, R.; Artemyev, M. V.; M�ller, B.; Lethomas, N.; Anikeyev, V.; Sch�ps, O. // Applied Physics B: Lasers & Optics;Oct2003, Vol. 77 Issue 5, p469 

    We have studied the optical properties of three-dimensionally confined photon states in a spherical microcavity (the photonic dots) resonantly excited by photons emitted from semiconductor nanocrystals (the quantum dots). Glass and polymer microspheres with sizes of 2? < R < 10 are characterized...

  • Whispering gallery resonances in semiconductor micropillars. Astratov, V. N.; Yang, S.; Lam, S.; Jones, B. D.; Sanvitto, D.; Whittaker, D. M.; Fox, A. M.; Skolnick, M. S.; Tahraoui, A.; Fry, P. W.; Hopkinson, M. // Applied Physics Letters;8/13/2007, Vol. 91 Issue 7, p071115 

    In this letter, the authors observe high quality (Q up to 20 000) whispering gallery modes (WGMs) with small modal volumes V∼0.3 μm3 in 4–5 μm Al(Ga)As/GaAs micropillars by employing an experimental geometry in which both excitation and collection of emission are in a direction...


Read the Article


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

Try another library?
Sign out of this library

Other Topics