A topological route to engineering robust and bright supersymmetric laser arrays

TL;DR

This paper introduces a topological and supersymmetric design for laser arrays that achieves robust, high-power, and easily fabricated in-phase synchronized lasers, advancing the practical implementation of SUSY laser systems.

Contribution

It presents a novel SUSY-based laser array design derived from the SSH model with uniform geometry and enhanced far-field intensity, improving robustness and scalability.

Findings

Achieves near-uniform geometry in laser arrays and reservoirs.

Demonstrates far-field intensity scales as N^2 with number of lasers.

Provides a practical roadmap for high-power SUSY laser arrays.

Abstract

In recent years, several proposals that leverage principles from condensed matter and high-energy physics for engineering laser arrays have been put forward. The most important among these concepts are topology, which enables the construction of robust zero-mode laser devices, and supersymmetry (SUSY), which holds the potential for achieving phase locking in laser arrays. In this work, we show that the relation between supersymmetric coupled bosonic and fermionic oscillators on one side, and bipartite networks (and hence chiral symmetry) on another side can be exploited together with non-Hermitian engineering for building one- and two-dimensional laser arrays with in-phase synchronization. To demonstrate our strategy, we present a concrete design starting from the celebrated Su-Schrieffer-Heeger (SSH) model to arrive at a SUSY laser structure that enjoys two key advantages over those reported in previous works. Firstly, the design presented here features a near-uniform geometry for both the laser array and supersymmetric reservoir (i.e. the widths and distances between the cavity arrays are almost the same). Secondly, the uniform field distribution in the presented structure leads to a far-field intensity that scales as N^2 where N is the number of lasing elements. Taken together, these two features can enable the implementation of higher-power laser arrays that are easy to fabricate, and hence provide a roadmap for pushing the frontier of SUSY laser arrays beyond the proof-of-concept phase.