Recent Progresses on Hybrid Lithium Niobate External Cavity Semiconductor Lasers

Overview

Journal Materials (Basel)

Publisher MDPI

Date 2024 Sep 28

PMID 39336195

Authors

Min Wang

Zhiwei Fang

Haisu Zhang

Jintian Lin

Junxia Zhou

Ting Huang

Yiran Zhu

Chuntao Li

Shupeng Yu

Botao Fu

Lingling Qiao

Ya Cheng

Affiliations

Soon will be listed here.

Abstract

Thin film lithium niobate (TFLN) has become a promising material platform for large scale photonic integrated circuits (PICs). As an indispensable component in PICs, on-chip electrically tunable narrow-linewidth lasers have attracted widespread attention in recent years due to their significant applications in high-speed optical communication, coherent detection, precision metrology, laser cooling, coherent transmission systems, light detection and ranging (LiDAR). However, research on electrically driven, high-power, and narrow-linewidth laser sources on TFLN platforms is still in its infancy. This review summarizes the recent progress on the narrow-linewidth compact laser sources boosted by hybrid TFLN/III-V semiconductor integration techniques, which will offer an alternative solution for on-chip high performance lasers for the future TFLN PIC industry and cutting-edge sciences. The review begins with a brief introduction of the current status of compact external cavity semiconductor lasers (ECSLs) and recently developed TFLN photonics. The following section presents various ECSLs based on TFLN photonic chips with different photonic structures to construct external cavity for on-chip optical feedback. Some conclusions and future perspectives are provided.

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