Luo Q, Yang C, Hao Z, Zhang R, Ma R, Zheng D, Liu H, Yu X, Gao F, Bo F, Kong Y, Zhang G, Xu J. On-chip ytterbium-doped lithium niobate microdisk lasers with high conversion efficiency.
Opt Lett 2022;
47:854-857. [PMID:
35167542 DOI:
10.1364/ol.448232]
[Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 01/11/2022] [Indexed: 06/14/2023]
Abstract
Integrated optical systems based on lithium niobate on insulator (LNOI) have attracted the interest of researchers. Recently, erbium-doped LNOI lasers have been realized. However, the reported lasers have a relatively lower conversion efficiency and only operate in the 1550 nm band. In this paper, we demonstrate an LNOI laser operating in the 1060 nm band based on a high Q factor ytterbium-doped LNOI microdisk cavity. The threshold and the conversion efficiency of the laser are 21.19 µW and 1.36%, respectively. To our knowledge, the conversion efficiency is the highest among the reported rare-earth-doped LNOI lasers. This research extends the operating band of LNOI lasers and shows the potential in realizing high-power LNOI lasers.
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