Issue 12, 2016

Colloidal quantum dot lasers built on a passive two-dimensional photonic crystal backbone

Abstract

We report the room-temperature lasing action from two-dimensional photonic crystal (PC) structures composed of a passive Si3N4 backbone with an over-coat of CdSe/CdS/ZnS colloidal quantum dots (CQDs) for optical gain. When optically excited, devices lased in dual PC band-edge modes, with the modal dominance governed by the thickness of the CQD over-layer. The demonstrated laser platform should have an impact on future photonic integrated circuits as the on-chip coupling between active and passive components is readily achievable.

Graphical abstract: Colloidal quantum dot lasers built on a passive two-dimensional photonic crystal backbone

Supplementary files

Article information

Article type
Paper
Submitted
02 Dec 2015
Accepted
18 Feb 2016
First published
19 Feb 2016

Nanoscale, 2016,8, 6571-6576

Author version available

Colloidal quantum dot lasers built on a passive two-dimensional photonic crystal backbone

H. Chang, K. Min, M. Lee, M. Kang, Y. Park, K. Cho, Y. Roh, S. Woo Hwang and H. Jeon, Nanoscale, 2016, 8, 6571 DOI: 10.1039/C5NR08544F

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