Extremely low room-temperature threshold current density diode lasers using InAs dots in In0.15Ga0.85As quantum well

1999 ◽  
Vol 35 (14) ◽  
pp. 1163 ◽  
Author(s):  
G.T. Liu ◽  
A. Stintz ◽  
H. Li ◽  
K.J. Malloy ◽  
L.F. Lester
Keyword(s):  
Quantum Well ◽  
Current Density ◽  
Room Temperature ◽  
Diode Lasers ◽  
Threshold Current ◽  
Threshold Current Density ◽  
Temperature Threshold

2.3–2.7µm InGaAsSb/AlGaAsSb Broad-Contact and Single-Mode Ridge-Waveguide SCH-QW Diode Lasers Operating in CW Regime at Room Temperature

1999 ◽  
Vol 607 ◽  
Author(s):  
D. Garbuzov ◽  
H. Lee
Keyword(s):  
Quantum Well ◽  
Wavelength Range ◽  
Current Density ◽  
Room Temperature ◽  
Diode Lasers ◽  
Single Mode ◽  
Threshold Current ◽  
Threshold Current Density ◽  
Ridge Waveguide ◽  
Longitudinal Modes

AbstractA new approach in the design of (Al)InGaAsSb/GaSb quantum well separate confinement heterostructure (QW-SCH) diode lasers has led to CW room-temperature lasing up to 2.7 gm. To avoid QW material degradation associated with the miscibility gap in the 2.3–2.7 tim wavelength range, we used highly strained, “quasi-ternary” InxGa1−xSbl−yAsy compounds with 0.25<x<0.38 and y<0.07 as the material for QWs. Very low threshold current density (∼300 A/cm2) and high CW output powers (>100 mW) were obtained from broad contact devices operating in the 2.3–2.6 μm wavelength range. From the spontaneous emission measurements we have identified that the Auger process determines the rate of recombination in quantum well active region over the entire temperature range studied (15– 110 'C) for 2.6 gim lasers and only at temperatures higher than 65 'C for 2.3 pim lasers. If Auger recombination dominates, strong temperature dependence of Auger coefficient leads to the rapid increase of threshold current density with temperature (To ∼40 °C). In the range of 15 – 65 °C for 2.3 gim devicesa monomolecular, non-radiative mechanism dominates and To is about 110 °C. In addition, single-mode CW room temperature ridge-waveguide lasers with wavelength of 2.3-2.55 gim have been fabricated for the first time. The lasers display threshold currents around 50 mA with CW output powers of several milliwatts. Since for a certain range of temperatures and currents one of the longitudinal modes dominates in the spectra of the ridge lasers they have been successfully applied forgas spectroscopy.

Excellent uniformity and very low (<50 A/cm2) threshold current density strained InGaAs quantum well diode lasers on GaAs substrate

1991 ◽  
Vol 58 (16) ◽  
pp. 1704-1706 ◽  
Author(s):  
Naresh Chand ◽  
E. E. Becker ◽  
J. P. van der Ziel ◽  
S. N. G. Chu ◽  
N. K. Dutta
Keyword(s):  
Quantum Well ◽  
Current Density ◽  
Gaas Substrate ◽  
Diode Lasers ◽  
Threshold Current ◽  
Threshold Current Density ◽  
Ingaas Quantum Well

1.3 [micro sign]m InAs∕GaAs multilayer quantum-dot laser with extremely low room-temperature threshold current density

2004 ◽  
Vol 40 (22) ◽  
pp. 1412 ◽  
Author(s):  
I.R. Sellers ◽  
H.Y. Liu ◽  
K.M. Groom ◽  
D.T. Childs ◽  
D. Robbins ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Current Density ◽  
Room Temperature ◽  
Threshold Current ◽  
Threshold Current Density ◽  
Temperature Threshold ◽  
Quantum Dot Laser

scholarly journals Effect of Quantum Well Compressive Strain Above 1% On Differential Gain and Threshold Current Density in Type-I GaSb-Based Diode Lasers

2008 ◽  
Vol 44 (12) ◽  
pp. 1204-1210 ◽  
Author(s):  
Jianfeng Chen ◽  
Dmitry Donetsky ◽  
Leon Shterengas ◽  
Mikhail V. Kisin ◽  
Gela Kipshidze ◽  
...  
Keyword(s):  
Quantum Well ◽  
Current Density ◽  
Diode Lasers ◽  
Compressive Strain ◽  
Threshold Current ◽  
Threshold Current Density ◽  
Type I ◽  
Differential Gain

740 nm InP∕GaInP quantum-dot laser with 190 A cm−2 room temperature threshold current density

2005 ◽  
Vol 41 (5) ◽  
pp. 247 ◽  
Author(s):  
J. Lutti ◽  
P.M. Smowton ◽  
G.M. Lewis ◽  
A.B. Krysa ◽  
J.S. Roberts ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Current Density ◽  
Room Temperature ◽  
Threshold Current ◽  
Threshold Current Density ◽  
Temperature Threshold ◽  
Quantum Dot Laser
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