Picosecond spectral dynamics of gain‐switched quantum‐well lasers and its dependence on quantum‐well structures

1990 ◽  
Vol 67 (5) ◽  
pp. 2675-2677 ◽  
Author(s):  
T. Sogawa ◽  
Y. Arakawa
Keyword(s):  
Quantum Well ◽  
Quantum Well Lasers ◽  
Spectral Dynamics ◽  
Quantum Well Structures

Modulation and spectral dynamics in semiconductor quantum-well lasers

1993 ◽  
Author(s):  
Bin Zhao ◽  
T. R. Chen ◽  
Yoshiro Yamada ◽  
Y. H. Zhuang ◽  
Amnon Yariv
Keyword(s):  
Quantum Well ◽  
Quantum Well Lasers ◽  
Spectral Dynamics ◽  
Semiconductor Quantum Well

GaAs–AlGaAs multiple-quantum-well lasers for monolithic integration with optical modulators

1991 ◽  
Vol 69 (3-4) ◽  
pp. 491-496 ◽  
Author(s):  
F. Chatenoud ◽  
K. M. Dzurko ◽  
M. Dion ◽  
D. Moss ◽  
R. Barber ◽  
...  
Keyword(s):  
Quantum Well ◽  
Quantum Wells ◽  
Cavity Length ◽  
Multiple Quantum Well ◽  
Monolithic Integration ◽  
Quantum Well Lasers ◽  
Multiple Quantum ◽  
Optical Modulators ◽  
Single Quantum Well ◽  
Quantum Well Structures

Calculations of multiple-quantum-well laser threshold current show that a common minimum current value exists for each number of wells, at an appropriate cavity length. This optimum cavity length decreases rapidly with increasing number of wells, for instance from about 300 to 110 μm for one to three wells. Granded-index separate-confinement heterostructure (GRINSCH) lasers with 1–10 quantum wells, grown by molecular beam epitaxy, show consistently low threshold currents that agree well with theoretical predictions. Lasing is achieved at 160 A cm−2 and 4.6 mA for broad-area and ridge waveguide single-quantum-well devices, respectively. The field-dependent electroabsorption of these devices when operating as wave-guide modulators indicates good modulation properties for one and three quantum-well structures, with on:off ratios above 55 at lasing wavelength. The behavior becomes more complex with increasing number of wells. This systematic study of discrete multiple-quantum-well lasers and modulators demonstrates that GRINSCH structures with 1–3 wells are the most suitable for monolithic integration. Design rules for the laser cavity are also presented for numbers of wells ranging from 1 to 10.

Optical nutation in GaAs Ga Al As quantum well structures

1996 ◽  
Vol 43 (8) ◽  
pp. 1657-1669 ◽  
Author(s):  
SHARMILA BANERJEE and PRANAY K SEN
Keyword(s):  
Quantum Well ◽  
Quantum Well Structures
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