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Quantum dot selective area intermixing for broadband light sources.
Zhou, K J; Jiang, Q; Zhang, Z Y; Chen, S M; Liu, H Y; Lu, Z H; Kennedy, K; Matcher, S J; Hogg, R A.
Affiliation
  • Zhou KJ; Department of Electronic and Electrical Engineering, University of Sheffield, Centre for Nano-Science and Technology, Broad Lane, Sheffield, UK. k.zhou@shef.ac.uk
Opt Express ; 20(24): 26950-7, 2012 Nov 19.
Article in En | MEDLINE | ID: mdl-23187550
ABSTRACT
We report a comparison of different capping materials on the intermixing of modulation p-doped InAs/In(Ga)As quantum dots (QD). QD materials with different caps are shown to exhibit significant difference in their optical properties during the annealing process. The selective area intermixing technique is demonstrated to laterally integrate two and three different QD light emitting devices with a single electrical contact. A spectral bandwidth of 240nm centered at 1188nm is achieved in a device with two sections. By calculating the point spread function for the obtained emission spectra, and applying the Rayleigh criteria for resolution, an axial resolution of 3.5µm is deduced. A three section device realizes a spectral bandwidth of 310nm centered at 1145nm. This corresponds to an axial resolution of 2.4µm. Such a small predicted axial resolution is highly desirable in optical coherence tomography system and other coherence-based systems applications.
Subject(s)

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Nanotechnology / Quantum Dots / Light / Luminescent Measurements Type of study: Prognostic_studies Language: En Journal: Opt Express Journal subject: OFTALMOLOGIA Year: 2012 Document type: Article Affiliation country:

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Nanotechnology / Quantum Dots / Light / Luminescent Measurements Type of study: Prognostic_studies Language: En Journal: Opt Express Journal subject: OFTALMOLOGIA Year: 2012 Document type: Article Affiliation country: