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Ultrasmall Lasers Based on Photonic Crystal Line Defects

Published online by Cambridge University Press:  01 February 2011

Toshihiko Baba
Toshihiko Baba*
Affiliation:
Yokohama National University, Department of Electrical and Computer Engineering 79–5 Tokiwadai, Hodogayaku, Yokohama 240–8501, Japan
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Abstract

In this paper, we discuss unique light localization in a single line defect, which is effective for constructing photonic crystal light lasers. The localization is based on additional defect doping that breaks the symmetry of the line defect. Even though such a defect is opened to the line defect, the optical field is well confined around the defect at cutoff frequencies of the line defect. This concept expands the design flexibility of microcavities; for example, the composite of point and line defects and waveguide components such as bends and branches can be microcavities. It also allows effective mode controls such as the singlemode operation in relatively large cavities. The lasing operation of these cavities in a GaInAsP photonic crystal slab was experimentally observed by photopumping at room temperature. This paper reports lasing characteristics and the dependence on various structural details.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 797: Symposium W – Engineered Porosity for Microphotonics and Plasmonics , 2003 , W6.4
Copyright
Copyright © Materials Research Society 2004

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References

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