Raman scattering and anti-Stokes emission from a single spherical microcavity with a CdTe quantum dot monolayer

Rakovich, Yu. P.; Donegan, J.F.; Gaponik, N.; Rogach, A.L.
September 2003
Applied Physics Letters;9/29/2003, Vol. 83 Issue 13, p2539
Academic Journal
We have studied the Raman and luminescence spectra of a microcavity–quantum dot system consisting of a melamine formaldehyde latex microsphere coated by CdTe colloidal quantum dots. The cavity-induced enhancement of the Raman scattering allows the observation of Raman spectra from only a monolayer of CdTe quantum dots. Periodic structure with very narrow peaks in the luminescence spectra of a single microsphere was detected arising from the coupling between the emission from quantum dots and spherical cavity modes. Strong anti-Stokes emission from CdTe quantum dots coupled to the cavity modes was observed using low intensity below band-gap excitation and attributed to the strong field enhancement at the microcavity resonances. © 2003 American Institute of Physics.


Related Articles

  • Raman scattering in InAs/(AlGa)As self-assembled quantum dots: Evidence of Al intermixing. Ibáñez, J.; Cuscó, R.; Artús, L.; Henini, M.; Patanè, A.; Eaves, L. // Applied Physics Letters;4/3/2006, Vol. 88 Issue 14, p141905 

    We use Raman scattering to study the composition of InAs self-assembled quantum dots (QDs) embedded in an AlxGa1-xAs matrix. When Al is introduced into the matrix (0.15

  • Electronic Raman Scattering in InAs/AlAs Quantum Dot Structures. Milekhin, A. G.; Toropov, A. I.; Bakarov, A. K.; Lentze, M.; Geurts, J.; Zahn, D. R. T. // AIP Conference Proceedings;2007, Vol. 893 Issue 1, p911 

    We present a resonant Raman study of periodical structures with InAs quantum dots (QDs) in AlAs matrix focusing on zero-dimensional inter-subband spin and charge density excitations (SDEs and CDEs, respectively), as well as coupled intersubband plasmon-phonon modes. The behaviour of the SDE and...

  • Probing the excited state distributions of CdTe/ZnTe self-assembled quantum dots using resonant Raman scattering. Abdi, A.; Hoang, T. B.; Mackowski, S.; Smith, L. M.; Jackson, H. E.; Yarrison-Rice, J. M.; Kossut, J.; Karczewski, G. // Applied Physics Letters;10/31/2005, Vol. 87 Issue 18, p183104 

    Resonant Raman scattering is a sensitive means to probe electronic states in semiconductor materials even when such states are not accessible either through photoluminescence or transport techniques. We show that resonant Raman scattering can be used to probe the excited state distribution of...

  • Resonant Raman Scattering In Spherical InP QDs: The Role Of The Optical Deformation Potential Interaction. Rolo, A. G.; Vasilevskiy, M. I.; Talapin, D. V.; Rogach, A. L. // AIP Conference Proceedings;2005, Vol. 772 Issue 1, p747 

    Anomalous TO-type modes in the Raman spectra of spherical InP QDs are explained invoking the optical deformation potential mechanism which is shown to be as important as the Fröhlich-type one. Raman spectra, calculated in a model taking into account electron, hole and optical phonon...

  • Raman spectroscopy of In(Ga)As/GaAs quantum dots. Chu, L.; Zrenner, A.; Bichler, M.; Bo¨hm, G.; Abstreiter, G. // Applied Physics Letters;12/11/2000, Vol. 77 Issue 24 

    We report on inelastic light scattering on self-assembled In(Ga)As/GaAs quantum dots. Phonon modes are investigated in backscattering from (001) surface and (110) cleaved edge both in polarized and depolarized geometry. One relatively broad phonon signal is observed which is attributed to...

  • Temporal evolution of resonant Raman-scattering in ZnCdSe quantum dots. Kaschner, A.; Strassburg, M.; Hoffmann, A.; Thomsen, C.; Bartels, M.; Lischka, K.; Schikora, D. // Applied Physics Letters;5/8/2000, Vol. 76 Issue 19 

    We investigated ZnCdSe/ZnSe quantum-dot structures which include planar and coherently strained three-dimensional islands with different sizes. Optical excitation of these islands well below the ZnSe band gap leads to a resonant enhancement of the Zn[sub 0.7]Cd[sub 0.3]Se longitudinal-optical...

  • Resonant Raman scattering in nanostructures with InGaAs/AlAs quantum dots. Milekhin, A. G.; Toropov, A. I.; Bakarov, A. K.; Schulze, S.; Zahn, D. R. T. // JETP Letters;8/1/2006, Vol. 83 Issue 11, p505 

    Raman scattering by optical phonons in InxGa1 - x As/AlAs nanostructures with quantum dots has been studied experimentally for compositions corresponding to x = 0.3-1 under out-resonance conditions. Features due to scattering by GaAs-and InAs-like optical phonons in quantum dots have been...

  • Theory of coherent Raman scattering with quasi-cw noisy light for a general line shape function. Ulness, Darin J.; Kirkwood, Jason C.; Stimson, Michael J.; Albrecht, A.C. // Journal of Chemical Physics;11/8/1997, Vol. 107 Issue 18, p7127 

    Studies the theory of coherent Raman scattering with quasi-cw noisy light for a general line shape function. Interferometric decay of each of the terms; Identical decay of the Lorentzian line; Principles of factorized time correlation diagram analysis.

  • The Raman spectrum of Ti3SiC2. Amer, M.; Barsoum, M. W. // Journal of Applied Physics;11/15/1998, Vol. 84 Issue 10, p5817 

    Presents information on a study which compared the Raman spectrum of Ti3SiC2 with that of TiC0.67. Similarities between Ti3SiC2 and TiCx; Processing details; Results; Conclusions.


Read the Article


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

Try another library?
Sign out of this library

Other Topics