Photoluminescence of self-assembled InAs quantum dots embedded in photonic crystal nanocavities with shifted air holes

Wen Yen Chen, Hsiang Szu Chang, Chia Han Lin, Pei Chin Chiu, Chun Jung Wang, Yen Chun Tseng, Jen Inn Chyi, Tzu Min Hsu

Research output: Contribution to journalArticlepeer-review

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Abstract

This study investigates the photoluminescence for self-assembled InAs quantum dots embedded in photonic crystal nanocavities as two of the air holes nearest the H1 cavity were shifted. A rapid decrease of resonant wavelength and quality factor for the cavity modes, in which the electric field patterns extended in the shifting direction, were found as the shift increased from 0.2 to 0.4 lattice constants. This phenomenon is interpreted as being caused by the formation of two point defects between the nearest and second nearest air holes.

Original languageEnglish
Article number055201
JournalNanotechnology
Volume21
Issue number5
DOIs
StatePublished - 2010

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