Integrated Photonics Based on Rare‐Earth Ion‐Doped Thin‐Film Lithium Niobate (Laser Photonics Rev. 16(9)/2022)

Integrated Photonics Rare‐earth‐ion‐doped thin‐film LiNbO3 (RE:LNOI) meets the urgent demands for chip‐integrated laser sources, optical amplifiers, and quantum memories based on LNOI photonics. In article number 2200059, Yuechen Jia, Yuping Chen, Feng Chen, and colleagues provide a timely review on the development of RE:LNOI photonics in terms of ion‐doping techniques, chip‐integrated lasers and amplifiers, as well as low‐temperature optical characterizations for quantum photonics. And the RE:LNOI platform is expected to soon become a photonics game‐changer. [ABSTRACT FROM AUTHOR]