DataVXACS NanoPaper
journal article·2025-10-07

Lasing from Brillouin Zone Folding Guided Resonances

Matthew R. Chua, Lu Ding, Xiao Liang, Corentin Dabard, Wudeng Wang, Syed Akhil, Emek Goksu Durmusoglu, Febiana Tjiptoharsono, Hilmi Volkan Demir, Ramón Paniagua-Domínguez, Arseniy I. Kuznetsov

ACS Nano· Volume 19· Issue 39
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Source abstract

Abstract

High-quality factor (Q-factor) nanophotonic cavities are critical components in applications such as lasing and nonlinear optics. However, to obtain out-of-plane lasing emission and a low lasing threshold, the lasing mode must fulfill the contradictory requirement of coupling to the light cone while maintaining a high Q-factor. One relatively unexplored method to design such modes consists of using a Brillouin Zone folding guided resonance (BZF-GR) as the high Q-factor mode for lasing. In such a design, guided modes are "folded" into the light cone via periodic perturbations, allowing fine control of the Q-factor throughout momentum space. In this paper, we experimentally demonstrate the use of such a BZF-GR to achieve vertical emission lasing from a nanophotonic cavity with colloidal quantum dots as a gain medium. The lowest lasing threshold fluence under nanosecond pump is (20.4 ± 0.3) μJ cm-2. When considering the absorption, this value falls to (4.08 ± 0.08) μJ cm-2. This work presents a method of designing lasing modes that may be further developed for use in low-threshold nanoscale lasers.
Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

Nanomaterials

OpenAlex topics: Photonic and Optical Devices · Plasmonic and Surface Plasmon Research · Photonic Crystals and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Agency for Science, Technology and Research (A*STAR), Institute of Materials Research and Engineering (IMRE), 2 Fusionopolis Way, Innovis #08-03, Singapore 138634, Republic of Singapore

LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays, The Photonics Institute, School of Electrical and Electronic Engineering, School of Physical and Mathematical Sciences

School of Materials Science and Engineering Nanyang Technological University

Information Science and Engineering College

Dalian Polytechnic University

UNAM-Institute of Materials Science and Nanotechnology, The National Nanotechnology Research Center, Department of Electrical and Electronics Engineering, Department of Physics

Bilkent University

Funding

Agency for Science, Technology and Research · National Research Foundation Singapore · T?rkiye Bilimsel ve Teknolojik Arastirma Kurumu · T?rkiye Bilimler Akademisi

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