Journal article
Resonant photonic band gap structures realized from molecular-beam-epitaxially grown InGaAs/GaAs Bragg-spaced quantum wells
Journal of applied physics, Vol.100(6), p.063101
09/15/2006
DOI: 10.1063/1.2234814
Abstract
We present a comprehensive study of the growth and fabrication of Bragg-spaced quantum wells, a type of resonant photonic band gap structure. To begin, we considered the impact of disorder and drift in the periodicity of the quantum wells on the formation of the resonant photonic band gap. We found that steady decrease in the periodicity greater than a few percent leads to collapse of the resonant photonic band gap, while random disorder in the quantum well periodicity of several percent leads to extra peaks in the resonant photonic band gap due to coupling to "intermediate band" states. Next, we optimized the growth of low x (x <= 0.06) InxGa1-xAs/GaAs quantum wells, the building block of Bragg-spaced quantum well structures. Growth parameters optimized include growth rate, modulation of substrate temperature for barrier/quantum well, and V/III flux ratio. Fast growth of quantum wells was achieved with some of the narrowest heavy-hole exciton linewidths (0.37 meV) reported to date for quantum wells of these widths. Using the optimized InGaAs/GaAs quantum wells as a building block, we grew near-ideal N=210 Bragg-spaced quantum well structures. By monitoring growth rates during growth with reflection high energy electron diffraction and correcting drift by adjusting cell temperature, drift and disorder in periodicity were kept to less than 1%. We see no fundamental barriers to growing much longer structures such as N=1000 periods or longer. (c) 2006 American Institute of Physics.
Details
- Title: Subtitle
- Resonant photonic band gap structures realized from molecular-beam-epitaxially grown InGaAs/GaAs Bragg-spaced quantum wells
- Creators
- J. P. PrineasC. CaoM. YildirimW. JohnstonM. Reddy
- Resource Type
- Journal article
- Publication Details
- Journal of applied physics, Vol.100(6), p.063101
- Publisher
- Amer Inst Physics
- DOI
- 10.1063/1.2234814
- ISSN
- 0021-8979
- eISSN
- 1089-7550
- Number of pages
- 14
- Language
- English
- Date published
- 09/15/2006
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428791902771
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