Lasing in nanoparticle arrays with complex unit cells

Rebecca Heilmann; Kristian Arjas; Päivi Törmä

doi:10.1117/12.3015176

10 June 2024 Lasing in nanoparticle arrays with complex unit cells

Rebecca Heilmann, Kristian Arjas, Päivi Törmä

Proceedings Volume 12991, Nanophotonics X; 129910H (2024) https://doi.org/10.1117/12.3015176
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

In this work, we study lasing in plasmonic nanoparticle arrays with complex structures. Complex structures can be formed by unit cells that contain more than one particle or by creating supercells i.e. giant unit cells, which contain tens of particles. Here, we study lasing in supercell arrays which are based on a square array geometry. The supercell is created by leaving certain lattice sites empty, creating an aperiodic pattern. This supercell is repeated to form an array. We calculate the band structures of the arrays by combining the structure factors of the lattice geometries with an empty lattice approximation. We show that by leaving certain lattice sites empty, some of the destructive interference is removed, leading to additional dispersive branches. This provides new band edges that support lasing. We experimentally demonstrate lasing in such supercell arrays which show interesting lasing emission patterns and multimode lasing.

Conference Presentation

Citation Download Citation

Rebecca Heilmann, Kristian Arjas, and Päivi Törmä "Lasing in nanoparticle arrays with complex unit cells", Proc. SPIE 12991, Nanophotonics X, 129910H (10 June 2024); https://doi.org/10.1117/12.3015176

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available