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- Atlasov, K. A., et al.
(författare)
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Site-controlled quantum-wire and quantum-dot photonic-crystal microcavity lasers
- 2010
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Ingår i: Photonics Society Winter Topicals Meeting Series (WTM), 2010 IEEE. - 9781424452415 ; , s. 149-150
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Konferensbidrag (refereegranskat)abstract
- Based on site- and energy-controlled quantum wires (QWR) and quantum dots (QD), diverse photonic-crystal microcavity laser systems are proposed and discussed. Results demonstrating QWR lasing, cavity coupling and QD ordered arrays are presented.
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| 3. |
- Gallo, P., et al.
(författare)
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Integration of site-controlled pyramidal quantum dots and photonic crystal membrane cavities
- 2008
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Ingår i: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 92, s. 263101-
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Tidskriftsartikel (refereegranskat)abstract
- The authors demonstrate the deterministic coupling between a single, site-controlled InGaAs/GaAs pyramidal quantum dot (QD) and a photonic crystal membrane cavity defect. The growth of self-ordered pyramidal QDs in small (300 nm base side) tetrahedral recesses etched on (111)B GaAs substrates was developed in order to allow their integration within the thin GaAs membranes. Accurate (better than 50 nm) positioning of the QD with respect to the optical cavity mode is achieved reproducibly owing to the site control. Coupling of the dot emission with the cavity mode is evidenced in photoluminescence measurements. The deterministic positioning of the pyramidal QDs and the control of their emission spectrum opens the way for devices based on QDs integrated with coupled nanocavities.
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| 10. |
- Atlasov, K.A., et al.
(författare)
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Site-controlled single quantum wire integrated into a photonic-crystal membrane microcavity
- 2007
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Ingår i: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 90, s. 153107-
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Tidskriftsartikel (refereegranskat)abstract
- Integration of a site-controlled semiconductor V-groove quantum wire (QWR) into a photonic-crystal (PhC) membrane microcavity is reported. Reproducible coupling of the QWR emission to a mode of the PhC cavity is evidenced by the narrower linewidth, higher intensity, and variation with temperature and PhC parameters of the QWR line. Finite difference time domain simulations of the cavity are employed for identifying the observed mode. The presented PhC-QWR coupled structures are promising for achieving very low-threshold lasers and for studies of one-dimensional photon-exciton coupled systems
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| 12. |
- Atlasov, K.A., et al.
(författare)
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Wavelength and loss splitting in directly coupled photonic-crystal defect microcavities
- 2008
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Ingår i: Optics Express. - 1094-4087. ; 16:20, s. 16255-16264
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Tidskriftsartikel (refereegranskat)abstract
- Coupling between photonic-crystal defect microcavities is observed to result in a splitting not only of the mode wavelength but also of the modal loss. It is discussed that the characteristics of the loss splitting may have an important impact on the optical energy transfer between the coupled resonators. The loss splitting - given by the imaginary part of the coupling strength - is found to arise from the difference in diffractive outof-plane radiation losses of the symmetric and the antisymmetric modes of the coupled system. An approach to control the splitting via coupling barrier engineering is presented. © 2008 Optical Society of America.
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