Lithium niobate on insulator(LNOI), as an emerging and promising optical integration platform, faces shortages of on-chip active devices including lasers and amplifiers. Here, we report the fabrication of on-chip erbi...Lithium niobate on insulator(LNOI), as an emerging and promising optical integration platform, faces shortages of on-chip active devices including lasers and amplifiers. Here, we report the fabrication of on-chip erbium-doped LNOI waveguide amplifiers based on electron beam lithography and inductively coupled plasma reactive ion etching. A net internal gain of ~30 d B/cm in the communication band was achieved in the fabricated waveguide amplifiers under the pump of a974 nm continuous laser. This work develops new active devices on LNOI and may promote the development of LNOI integrated photonics.展开更多
Lithium-niobate microcavities have not only the ability to resonantly enhance light–matter interaction but also excellent nonlinear optical properties,thereby providing an important platform for nonlinear optical inv...Lithium-niobate microcavities have not only the ability to resonantly enhance light–matter interaction but also excellent nonlinear optical properties,thereby providing an important platform for nonlinear optical investigations.In this paper,we report the observation of multi-peak spectra in the near infrared range in lithium-niobate microcavities on a chip under the pump of a 1550 nm continuous laser.Such a multi-peak spectrum was attributed to the sum-frequency of the pump laser and its background.The conversion efficiencies of the sum-frequency processes are of the order of61.5%W-1.The influences of the phenomenon on nonlinear processes were further discussed.展开更多
基金supported by the National Key Research and Development Program of China(No.2019YFA0705000)the National Natural Science Foundation of China(Nos.12034010,11734009,92050111,92050114,12074199,12004197,and 11774182)+1 种基金the Higher Education Discipline Innovation Project(No.B07013)the Program for Changjiang Scholars and Innovative Research Team in University(PCSIRT)(No.IRT_13R29)。
文摘Lithium niobate on insulator(LNOI), as an emerging and promising optical integration platform, faces shortages of on-chip active devices including lasers and amplifiers. Here, we report the fabrication of on-chip erbium-doped LNOI waveguide amplifiers based on electron beam lithography and inductively coupled plasma reactive ion etching. A net internal gain of ~30 d B/cm in the communication band was achieved in the fabricated waveguide amplifiers under the pump of a974 nm continuous laser. This work develops new active devices on LNOI and may promote the development of LNOI integrated photonics.
基金supported by the National Key Research and Development Program of China(No.2019YFA0705000)the National Natural Science Foundation of China(Nos.12034010,92050111,12134007,11734009,92050114,12004197,and 12074199)the Higher Education Discipline Innovation Project(No.B07013).
文摘Lithium-niobate microcavities have not only the ability to resonantly enhance light–matter interaction but also excellent nonlinear optical properties,thereby providing an important platform for nonlinear optical investigations.In this paper,we report the observation of multi-peak spectra in the near infrared range in lithium-niobate microcavities on a chip under the pump of a 1550 nm continuous laser.Such a multi-peak spectrum was attributed to the sum-frequency of the pump laser and its background.The conversion efficiencies of the sum-frequency processes are of the order of61.5%W-1.The influences of the phenomenon on nonlinear processes were further discussed.
