Investigation of mid-infrared intersubband stimulated gain under optical pumping in GaAs/AlGaAs quantum wells

1998 ◽  
Vol 83 (6) ◽  
pp. 2920-2926 ◽  
Author(s):  
O. Gauthier-Lafaye ◽  
S. Sauvage ◽  
P. Boucaud ◽  
F. H. Julien ◽  
F. Glotin ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Optical Pumping ◽  
Mid Infrared

Spontaneous and Stimulated Intersubband Emission Under Optical Pumping

1996 ◽  
Vol 450 ◽  
Author(s):  
P. Boucaud ◽  
S. Sauvage ◽  
O. Gauthier-Lafaye ◽  
Z. Moussa ◽  
F.-H. Julien ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Free Electron Laser ◽  
Population Inversion ◽  
Laser Emission ◽  
Optical Pumping ◽  
Stimulated Emission ◽  
Mid Infrared ◽  
Asymmetric Quantum ◽  
Waveguide Length ◽  
Subband Energy

ABSTRACTWe have investigated the mid-infrared spontaneous and stimulated emission between confined subbands in the conduction band of GaAs/AlGaAs quantum wells. The carriers which give rise to the intersubband emission are excited in the upper subbands using an intersubband optical pumping in coupled asymmetric quantum wells. The quantum wells are designed using phonon engineering in order to obtain population inversion between the second and first excited subband. This is obtained by adjusting the subband energy spacing between E2 and E1 close to the optical phonon energy which in turn allows an efficient relaxation. We have first observed intersubband spontaneous emission between E3 and E2 at 14 μm using an intersubband pumping with a CO2 laser in resonance with the E1-E3 transition. In a second set of experiments, the quantum wells are embedded in an infrared waveguide. We have measured the stimulated intersubband gain using a picosecond two-color free electron laser. The first color bleaches the E1-E3 transition and provides the population inversion. The intersubband stimulated gain is measured versus the waveguide length and photon energy. Stimulated gains ≈ 80 cm−1 are reported thus demonstrating that laser emission under optical pumping appears feasible in optimized structures. Finally, we show that intersubband emission can also be observed in quantum wells using an interband optical pumping.

LIGHT EMISSION, ABSORPTION AND AMPLIFICATION IN InAs/GaAs QUANTUM DOTS AND GaAs/AlGaAs QUANTUM WELLS RESULTING FROM OPTICAL PUMPING

2007 ◽  
Vol 06 (03n04) ◽  
pp. 241-244 ◽  
Author(s):  
D. A. FIRSOV ◽  
L. E. VOROBJEV ◽  
M. A. BARZILOVICH ◽  
V. YU. PANEVIN ◽  
I. V. MIKHAYLOV ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Quantum Wells ◽  
Light Absorption ◽  
Optical Pumping ◽  
Light Emission ◽  
Optical Excitation ◽  
Ground Level ◽  
Infrared Light ◽  
Mid Infrared ◽  
Gaas Quantum Dot

Optical phenomena in quantum dot and quantum well nanostructures aimed at the development of mid-infrared lasers based on intraband electron transitions are investigated in the conditions of interband optical pumping. Evolution of photoluminescence spectra and interband light absorption with intensity of interband optical excitation is investigated in InAs / GaAs quantum dot structures. Optically induced intersubband mid-infrared light absorption is studied in undoped tunnel-coupled GaAs / AlGaAs quantum wells. The stabilization of the electron concentration at the ground level of tunnel-coupled quantum wells under increasing pumping level is established.

Mid-infrared phase modulation by intersubband transitions in quantum wells

1992 ◽  
Vol 39 (11) ◽  
pp. 2646
Author(s):  
E.B. Dupont ◽  
D. Delacourt ◽  
M. Papuchon
Keyword(s):  
Quantum Wells ◽  
Phase Modulation ◽  
Intersubband Transitions ◽  
Mid Infrared

scholarly journals Mid-infrared photoluminescence from structures with InAs/GaSb type II quantum wells

2015 ◽  
Vol 643 ◽  
pp. 012078 ◽  
Author(s):  
A V Selivanov ◽  
I S Makhov ◽  
V Yu Panevin ◽  
A N Sofronov ◽  
D A Firsov ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Type Ii ◽  
Mid Infrared ◽  
Type Ii Quantum Wells

Intersubband mid-infrared emission in optically pumped quantum wells

1996 ◽  
Vol 19 (1) ◽  
pp. 69-79 ◽  
Author(s):  
F.H. Julien ◽  
Z. Moussa ◽  
P. Boucaud ◽  
Y. Lavon ◽  
A. Sa'ar ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Infrared Emission ◽  
Optically Pumped ◽  
Mid Infrared

Mid-Infrared Intersubband Emission and Lasing in Optically Pumped Coupled Quantum Wells Structures

1998 ◽  
pp. 30-36
Author(s):  
Yoav Lavon ◽  
Amir Sa’ar ◽  
Francois H. Julien ◽  
Jean-Pierre Leburton ◽  
Richard Planel
Keyword(s):  
Quantum Wells ◽  
Optically Pumped ◽  
Coupled Quantum Wells ◽  
Mid Infrared

Carrier loss mechanisms in type II quantum wells for the active region of GaSb-based mid-infrared interband cascade lasers

2011 ◽  
Vol 33 (11) ◽  
pp. 1817-1819 ◽  
Author(s):  
G. Sęk ◽  
F. Janiak ◽  
M. Motyka ◽  
K. Ryczko ◽  
J. Misiewicz ◽  
...  
Keyword(s):  
Active Region ◽  
Quantum Wells ◽  
Type Ii ◽  
Mid Infrared ◽  
Type Ii Quantum Wells ◽  
Interband Cascade Lasers ◽  
Cascade Lasers ◽  
Loss Mechanisms

Mid-Infrared Femtosecond Spectroscopy of Intersubband Hot Hole Relaxation in Quantum Wells

1996 ◽  
pp. 398-399
Author(s):  
P. M. Fauchet ◽  
G. W. Wicks ◽  
Ju. V. Vandyshev ◽  
Z. Xu ◽  
C. W. Rella ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Femtosecond Spectroscopy ◽  
Mid Infrared

scholarly journals Mid-infrared intersubband absorption in p-Ge/SiGe quantum wells grown on Si

2015 ◽  
Author(s):  
Kevin Gallacher ◽  
Andrea Ballabio ◽  
Ross W. Millar ◽  
Antonio Samarelli ◽  
Jacopo Frigerio ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Mid Infrared ◽  
Intersubband Absorption ◽  
Sige Quantum Wells
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