The wideband light emission around 800 nm from ternary InAsP quantum dots with an intentionally broadened size and composition distribution

Author

Miyake, S. ; Lee, W.S. ; Ujihara, T. ; Takeda, Y.

Author_Institution

Dept. of Crystalline Mater. Sci., Nagoya Univ.

fYear

0

fDate

0-0 0

Firstpage

208

Lastpage

210

Abstract

Emission wavelength from a confinement quantum dot (QD) strongly depends on its size and composition. As the application of the wideband light source for optical coherence tomography (OCT), we fabricated InP and InAsP quantum dots on GaInP lattice-matched to GaAs(001) with an intentionally broadened size and composition distribution. The growth technique is droplet hetero-epitaxy using organometallic vapor phase epitaxy system. In particular, InAsP QDs showed a broad PL spectrum with the central wavelength at 845 nm and a large FWHM of 100 nm. This FWHM value improves the resolution of OCT by 4-5 times from the conventional one

Keywords

III-V semiconductors; MOCVD; chemical analysis; indium compounds; infrared sources; optical tomography; photoluminescence; semiconductor quantum dots; spectral line breadth; vapour phase epitaxial growth; 845 nm; FWHM; GaAs(001); GaInP-GaAs; InAsP-GaInP-GaAs; InP quantum dots; InP-GaInP-GaAs; OCT; central wavelength; composition distribution; confinement quantum dot; droplet hetero-epitaxy; intentionally broadened quantum dot size; lattice matching; optical coherence tomography; organometallic vapor phase epitaxy system; photoluminescence; resolution; ternary InAsP quantum dots; wideband light emission; wideband light source; Biomedical optical imaging; Coherence; Indium phosphide; Light sources; Optical interferometry; Quantum dots; Temperature; Tomography; US Department of Transportation; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Indium Phosphide and Related Materials Conference Proceedings, 2006 International Conference on

Conference_Location

Princeton, NJ

Print_ISBN

0-7803-9558-1

Type

conf

DOI

10.1109/ICIPRM.2006.1634150

Filename

1634150