TY - JOUR
T1 - Cavity formation and light propagation in partially ordered and completely random one-dimensional systems
AU - Chang, Shih Hui
AU - Cao, Hui
AU - Ho, Seong Tiong
N1 - Funding Information:
Manuscript received June 20, 2002; revised October 17, 2002. This work was supported by the National Science Foundation under Grant ECS-9877113. S.-H. Chang and S. T. Ho are with the Department of Electrical and Computer Engineering, Northwestern University, Evanston IL 60208 USA (e-mail: [email protected]). H. Cao is with the Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208 USA. Digital Object Identifier 10.1109/JQE.2002.807178
PY - 2003/2
Y1 - 2003/2
N2 - We study light transport in ordered, partially ordered, and completely random one-dimensional (1-D) systems. In a periodic structure, there are three types of passbands with different origins. When disorder is introduced to a periodic system, the passbands change differently, depending on their origins. The transmissivity and decay length in the passbands near the band edges decrease drastically. The stopbands are widened. The introduction of randomness to a periodic structure enhances light localization in frequency regions in which it is delocalized in a periodic structure. In a completely random system, a resonant cavity is formed by two stacks of multiple layers which serve as two highly reflective broadband mirrors. We calculate the size and the quality factor of 1-D random cavities. With an increase in the degree of disorder, the lasing threshold in such a cavity first decreases, then increases. The lasing frequency spreads from the band edge toward the stopband center.
AB - We study light transport in ordered, partially ordered, and completely random one-dimensional (1-D) systems. In a periodic structure, there are three types of passbands with different origins. When disorder is introduced to a periodic system, the passbands change differently, depending on their origins. The transmissivity and decay length in the passbands near the band edges decrease drastically. The stopbands are widened. The introduction of randomness to a periodic structure enhances light localization in frequency regions in which it is delocalized in a periodic structure. In a completely random system, a resonant cavity is formed by two stacks of multiple layers which serve as two highly reflective broadband mirrors. We calculate the size and the quality factor of 1-D random cavities. With an increase in the degree of disorder, the lasing threshold in such a cavity first decreases, then increases. The lasing frequency spreads from the band edge toward the stopband center.
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U2 - 10.1109/JQE.2002.807178
DO - 10.1109/JQE.2002.807178
M3 - Article
AN - SCOPUS:0037321980
SN - 0018-9197
VL - 39
SP - 364
EP - 374
JO - IEEE Journal of Quantum Electronics
JF - IEEE Journal of Quantum Electronics
IS - 2
ER -