On-Chip Integrated Quantum-Dot-Silicon-Nitride Microdisk Lasers.

Xie, Weiqiang; Stöferle, Thilo; Rainò, Gabriele; Aubert, Tangi; Bisschop, Suzanne; Zhu, Yunpeng; Mahrt, Rainer F; Geiregat, Pieter et al. · Adv Mater · 2017

basic_science · Level V

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Abstract

Hybrid silicon nitride (SiN)-quantum-dot (QD) microlasers coupled to a passive SiN output waveguide with a 7 µm diameter and a record-low threshold density of 27 µJ cm<sup>-2</sup> are demonstrated. A new design and processing scheme offers long-term stability and facilitates in-depth QD material and device characterization, thereby opening new paths for optical communication, sensing, and on-chip cavity quantum optics based on colloidal QDs.