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Single-Mode Laser in the Telecom Range by Deterministic Amplification of the Topological Interface Mode.

ABSTRACT: Photonic integrated circuits are paving the way for novel on-chip functionalities with diverse applications in communication, computing, and beyond. The integration of on-chip light sources, especially single-mode lasers, is crucial for advancing those photonic chips to their full potential. Recently, novel concepts involving topological designs introduced a variety of options for tuning device properties, such as the desired single-mode emission. Here, we introduce a novel cavity design that allows amplification of the topological interface mode by deterministic placement of gain material within a topological lattice. The proposed design is experimentally implemented by a selective epitaxy process to achieve closely spaced Si and InGaAs nanorods embedded within the same layer. This results in the first demonstration of a single-mode laser in the telecom band using the concept of amplified topological modes without introducing artificial losses.

SUBMITTER: Scherrer M

PROVIDER: S-EPMC10958602 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature

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Single-Mode Laser in the Telecom Range by Deterministic Amplification of the Topological Interface Mode.

Scherrer Markus M Lee Chang-Won CW Schmid Heinz H Moselund Kirsten E KE

ACS photonics 20240212 3

Photonic integrated circuits are paving the way for novel on-chip functionalities with diverse applications in communication, computing, and beyond. The integration of on-chip light sources, especially single-mode lasers, is crucial for advancing those photonic chips to their full potential. Recently, novel concepts involving topological designs introduced a variety of options for tuning device properties, such as the desired single-mode emission. Here, we introduce a novel cavity design that al ...[more]

PMID: 38523747

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