Online citations, reference lists, and bibliographies.
Please confirm you are human
(Sign Up for free to never see this)
← Back to Search

Continuous Wave Operation Of SiO2 Sandwiched Colloidal CdSe/ZnS Quantum-Dot Microdisk Lasers

Hao-Che Chien, Chih-Yi Cheng, Ming-hua Mao
Published 2017 · Materials Science

Save to my Library
Download PDF
Analyze on Scholarcy
Share
We report continuous wave operation of SiO2 sandwiched colloidal CdSe/ZnS quantum-dot microdisk lasers at room temperature. The SiO2 sandwiched quantum dot structure is formed first and then the disk patterns are defined by e-beam lithography. The benefits of introducing the sandwich structure are two folds: one to increase the confinement factor and the other to reduce the photo-oxidation of quantum dots. The luminescence stability of CdSe/ZnS quantum dots is much improved after they are sandwiched in silicon dioxide. We observe whispering gallery modes spatially and spectrally in the microdisks. We also fabricated Si3N4 microdisks for comparison. The result shows that Si3N4 microdisks are severely damaged when operating under continuous wave excitation while SiO2 microdisks demonstrate stable lasing behavior at the same excitation condition. Therefore, SiO2 microdisks are more suitable for high excitation and/or continuous wave applications such as lasers. This device structure shows great potentials to be applied to other wavelength in the visible range.
This paper references
10.1063/1.4813408
Lasing properties of non-polar GaN quantum dots in cubic aluminum nitride microdisk cavities
M. Burger (2013)
10.1063/1.4813471
Low threshold, room-temperature microdisk lasers in the blue spectral range
I. Aharonovich (2013)
10.1002/adma.201301947
25th anniversary article: Colloidal quantum dot materials and devices: a quarter-century of advances.
J. Kim (2013)
10.1021/JP012018H
Photooxidation and Photobleaching of Single CdSe/ZnS Quantum Dots Probed by Room-Temperature Time-Resolved Spectroscopy
W. V. Sark (2001)
10.1063/1.1538312
Lasing from InGaAs quantum dots in an injection microdisk
L. Zhang (2003)
10.1021/NL025596Y
Highly Luminescent CdSe/ZnSe Core/Shell Nanocrystals of Low Size Dispersion
P. Reiss (2002)
10.1364/OE.14.001094
Cavity Q, mode volume, and lasing threshold in small diameter AlGaAs microdisks with embedded quantum dots.
K. Srinivasan (2006)
10.1364/OL.21.001390
Estimating surface-roughness loss and output coupling in microdisk resonators.
B. Little (1996)
10.1364/OE.19.014145
Room-temperature low-threshold current-injection InGaAs quantum-dot microdisk lasers with single-mode emission.
Ming-hua Mao (2011)
10.1364/OE.24.00A114
Fabrication and characterization of on-chip silicon nitride microdisk integrated with colloidal quantum dots.
Weiqiang Xie (2016)
10.1364/OE.21.022829
Overcoming SiN film stress limitations for high quality factor ring resonators
K. Luke (2013)
10.1201/9781420017663
Handbook of Semiconductor Manufacturing Technology
R. Doering (2007)
10.1063/1.4961425
Photo-stability and time-resolved photoluminescence study of colloidal CdSe/ZnS quantum dots passivated in Al2O3 using atomic layer deposition
Chih-Yi Cheng (2016)
10.1063/1.2387966
Ultralow threshold on-chip microcavity nanocrystal quantum dot lasers
B. Min (2006)
10.1063/1.4758990
From fabrication to mode mapping in silicon nitride microdisks with embedded colloidal quantum dots
B. D. Geyter (2012)
10.1063/1.1787157
Lasing characteristics of InAs quantum-dot microdisk from 3 K to room temperature
T. Ide (2004)
10.1063/1.126693
Optically pumped InAs quantum dot microdisk lasers
H. Cao (2000)
Introduction to optical waveguiding in simple double-heterosturctures
L. A. Coldren (1995)
10.1021/nn100637u
Thermally degradable ligands for nanocrystals.
A. W. Wills (2010)
10.1364/OE.20.003302
Transient behaviors of current-injection quantum-dot microdisk lasers.
Ming-hua Mao (2012)
Room temperature continuous-wave lasing near 1300 nm in microdisks with quantum dot active regions
T. Yang (2003)
10.1063/1.1883331
Efficient coupling of Er-doped silicon-rich oxide to microdisk whispering gallery modes
J. Verbert (2005)
10.1021/JP9530562
Synthesis and Characterization of Strongly Luminescing ZnS-Capped CdSe Nanocrystals
Margaret A. Hines and (1996)
10.1049/EL:20031058
Microdisks with quantum dot active regions lasing near 1300 nm at room-temperature
T. Yang (2003)



This paper is referenced by
Semantic Scholar Logo Some data provided by SemanticScholar