Zhou Yuan, Wang Zhe, Fang Zhiwei, Liu Zhaoxiang, Zhang Haisu, Yin Difeng, Liang Youting, Zhang Zhihao, Liu Jian, Huang Ting, Bao Rui, Wu Rongbo, Lin Jintian, Wang Min, Cheng Ya
Opt Lett. 2021 Nov 15;46(22):5651-5654. doi: 10.1364/OL.440379.
We demonstrate an on-chip -doped lithium niobate (LN) microdisk laser. The intrinsic quality factors of the fabricated -doped LN microdisk resonator are measured up to 3.79×10 at a 976 nm wavelength and 1.1×10 at a 1514 nm wavelength. The multi-mode laser emissions are obtained in a band from 1020 to 1070 nm pumped by a 984 nm laser and with the low threshold of 103µ, resulting in a slope efficiency of 0.53% at room temperature. Furthermore, both the second-harmonic frequency of pump light and the sum frequency of the pump light and laser emissions are generated in the on-chip -doped LN microdisk, benefiting from the strong nonlinearity of LN. These microdisk lasers are expected to contribute to the high-density integration of a lithium niobate on insulator-based photonic chip.
我们展示了一种片上掺杂铌酸锂（LN）微盘激光器。所制备的掺杂LN微盘谐振器的本征品质因数在976nm波长下测量高达3.79×10，在1514nm波长下为1.1×10。在984nm激光器泵浦下，在1020至1070nm波段获得多模激光发射，阈值低至103µ，室温下斜率效率为0.53%。此外，得益于LN的强非线性，在片上掺杂LN微盘中产生了泵浦光的二次谐波频率以及泵浦光与激光发射的和频。这些微盘激光器有望为基于绝缘体上铌酸锂的光子芯片的高密度集成做出贡献。
