论文标题
近红外电磁调节器可见的低1伏和高带宽
Sub-1 Volt and High-Bandwidth Visible to Near-Infrared Electro-Optic Modulators
论文作者
论文摘要
集成电极（EO）调节器是基本的光子学组件，在从数字通信到量子信息处理的领域中有用。在电信波长时，薄膜Niobate调节器在电压长度产品（$V_π$ L），光损耗和EO带宽方面表现出最先进的性能。但是，光学成像，光遗传学和量子科学中的应用通常需要在可见光到网状（VNIR）波长范围内运行的设备。在这项工作中，我们意识到vnir振幅和相位调节器具有$v_π$ l的sub-1 v $ \ cdot \，$ cm，$ cm，低光学损失和高带宽EO响应。我们的Mach-Zehnder调制器显示出低至0.55 V $ \ CDOT \，738 nm的$ CM，EO带宽超过35 GHz。此外，我们通过在VNIR波长处展示了第一个集成的EO频率梳子，通过EO剪切方法来展示这些高性能调节器提供的新机会，具有超过50行和可调间距的第一个集成的EO频率梳，具有超过50行的线和可调的间距，以及通过EO剪切方法将脉冲光的首次频率转移（最多7倍傅立叶限制）。
Integrated electro-optic (EO) modulators are fundamental photonics components with utility in domains ranging from digital communications to quantum information processing. At telecommunication wavelengths, thin-film lithium niobate modulators exhibit state-of-the-art performance in voltage-length product ($V_π$L), optical loss, and EO bandwidth. However, applications in optical imaging, optogenetics, and quantum science generally require devices operating in the visible-to-near-infrared (VNIR) wavelength range. In this work, we realize VNIR amplitude and phase modulators featuring $V_π$L's of sub-1 V$\cdot\,$cm, low optical loss, and high bandwidth EO response. Our Mach-Zehnder modulators exhibit a $V_π$L as low as 0.55 V$\cdot\,$cm at 738 nm, and EO bandwidths in excess of 35 GHz. Furthermore, we highlight the new opportunities these high-performance modulators offer by demonstrating the first integrated EO frequency combs at VNIR wavelengths, with over 50 lines and tunable spacing, and the first frequency shifting of pulsed light beyond its intrinsic bandwidth (up to 7x Fourier limit) by an EO shearing method.
