Near-Field Spectroscopy of the Quantum Constituents of a Luminescent System

Abstract

Luminescent centers with sharp (<0.07 millielectron volt), spectrally distinct emission lines were imaged in a GaAs/AlGaAs quantum well by means of low-temperature near-field scanning optical microscopy. Temperature, magnetic field, and linewidth measurements establish that these centers arise from excitons laterally localized at interface fluctuations. For sufficiently narrow wells, virtually all emission originates from such centers. Near-field microscopy/spectroscopy provides a means to access energies and homogeneous line widths for the individual eigenstates of these centers, and thus opens a rich area of physics involving quantum resolved systems.

Keywords

Laser linewidthSpectroscopyLuminescenceExcitonField (mathematics)MicroscopyPhysicsCondensed matter physicsAtomic physicsMagnetic fieldQuantumHomogeneousMolecular physicsMaterials scienceOpticsLaserQuantum mechanics

Affiliated Institutions

AT&T (United States) US

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Publication Info

Year: 1994
Type: article
Volume: 264
Issue: 5166
Pages: 1740-1745
Citations: 509
Access: Closed

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APA Style

                            
                                
                                    Harald F. Hess, 
                                
                                    Eric Betzig, 
                                
                                    T.D. Harris
                                
                                et al.
                            
                            (1994). 
                            Near-Field Spectroscopy of the Quantum Constituents of a Luminescent System. 
                            Science
                            , 264
                            (5166)
                            , 1740-1745.
                            https://doi.org/10.1126/science.264.5166.1740
                        

Identifiers

DOI: 10.1126/science.264.5166.1740