Nonlinear optical waveguides based on near-infrared intersubband transitions in GaN/AlN quantum wells
نویسندگان
چکیده
منابع مشابه
Nonlinear optical waveguides based on near-infrared intersubband transitions in GaN/AlN quantum wells.
We present the design, fabrication, and characterization of III-nitride quantum-well waveguides optimized for nonlinear-optical switching via intersubband transitions. A dielectric structure consisting of an AlN lower cladding and a GaN cap layer allows minimizing the propagation losses while maintaining a large modal overlap with the quantum-well active layer. A strong nonlinear saturation of ...
متن کاملNear-infrared intersubband transitions in InGaAs–AlAs–InAlAs double quantum wells
Intersubband optical transitions at short wavelengths in strain-compensated In0.70Ga0.30As—AlAs double quantum wells are investigated by means of mid-infrared absorption. Trade-offs between achieving a high transition energy and a large oscillator strength of the two highest-energy intersubband transitions using our strain-compensation approach are analyzed as a function of the widths of the tw...
متن کاملTemperature stability of intersubband transitions in AlN/GaN quantum wells
Temperature dependence of intersubband transitions in AlN/GaN multiple quantum wells grown with molecular beam epitaxy is investigated both by absorption studies at different temperatures and modeling of conduction-band electrons. For the absorption study, the sample is heated in increments up to 400◦C. The self-consistent Schrödinger-Poisson modeling includes temperature effects of the band-ga...
متن کاملTerahertz-optical mixing in undoped and doped GaAs quantum wells: From excitonic to electronic intersubband transitions
S. G. Carter,1,* V. Ciulin,1,† M. Hanson,2 A. S. Huntington,2,‡ C. S. Wang,3 A. C. Gossard,2,3 L. A. Coldren,2,3 and M. S. Sherwin1 1Physics Department and iQUEST, University of California, Santa Barbara, California 93106, USA 2Materials Department, University of California, Santa Barbara, California 93106, USA 3Electrical and Computer Engineering Department, University of California, Santa Bar...
متن کاملSuppression of absorption by quantum interference in intersubband transitions of tunnel-coupled double quantum wells
We propose and analyze an efficient scheme for suppressing the absorption of a weak probe field based on intersubband transitions in a four-level asymmetric coupled-quantum well (CQW) driven coherently by a probe laser field and a control laser field. By using the numerical simulation, we find that the magnitude of the transient absorption of the probe field is smaller than the three-level syst...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Express
سال: 2007
ISSN: 1094-4087
DOI: 10.1364/oe.15.005860