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

Nanoscale

Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea. and Inter-university Semiconductor Research Center, Seoul National University, Seoul 08826, Republic of Korea and Department of Biophysics and Chemical Biology, Seoul National University, Seoul 08826, Republic of Korea.

Published: March 2016

AI Article Synopsis

  • - We discovered room-temperature lasing from photonic crystal structures made of Si3N4 and coated with colloidal quantum dots (CQDs) for optical gain.
  • - The lasing occurs in two different modes, influenced by how thick the CQD layer is.
  • - This new laser technology could greatly affect future integrated photonic circuits, as it allows easy connection between active and passive components on the same chip.

Article 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.

Download full-text PDF

Source
http://dx.doi.org/10.1039/c5nr08544fDOI Listing

Publication Analysis

Top Keywords

colloidal quantum
8
two-dimensional photonic
8
photonic crystal
8
quantum dot
4
dot lasers
4
lasers built
4
built passive
4
passive two-dimensional
4
crystal backbone
4
backbone report
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!