论文标题
连贯的Terahertz辐射，通过芯片尺度的光电微孔子光学参数振荡，具有2.8八轴可调性
Coherent terahertz radiation with 2.8-octave tunability through chip-scale photomixed microresonator optical parametric oscillation
论文作者
论文摘要
Terahertz光谱中的高光谱纯度敏捷室温源是用于成像，传感，计量和通信的基础元素。在这里，我们基于集成的非线性微孔子来提出芯片量表光学参数振荡器，该振荡器在Terahertz制度中提供了广泛可调的单频率和多频率振荡器。通过光学到Terahertz使用等离激元纳米annna阵列向下转换，连贯的Terahertz辐射跨度为2.8八度，从330 GHz到2.3 THz，在每个步骤处，具有20 GHz腔模式的20 GHz腔模式限制频率调谐步骤和10 MHz动力学模式连续调谐范围。通过控制微孔室内功率和泵的共振引起，还可以实现可调多频率Terahertz振荡器。此外，通过稳定微孔子泵的功率和波长，显示出具有10-15个残留频率不稳定性的Terahertz辐射的100 Hz线宽。芯片尺度平台中单个频率，频率敏捷Terahertz辐射和多频Terahertz振荡器的室温产生提供了独特的计量，传感，成像和通信。
High spectral purity frequency agile room temperature sources in the terahertz spectrum are foundational elements for imaging, sensing, metrology, and communications. Here we present a chip scale optical parametric oscillator based on an integrated nonlinear microresonator that provides broadly tunable single frequency and multi frequency oscillators in the terahertz regime. Through optical to terahertz down conversion using a plasmonic nanoantenna array, coherent terahertz radiation spanning 2.8 octaves is achieved from 330 GHz to 2.3 THz, with 20 GHz cavity mode limited frequency tuning step and 10 MHz intracavity mode continuous frequency tuning range at each step. By controlling the microresonator intracavity power and pump resonance detuning, tunable multi frequency terahertz oscillators are also realized. Furthermore, by stabilizing the microresonator pump power and wavelength, sub 100 Hz linewidth of the terahertz radiation with 10-15 residual frequency instability is demonstrated. The room temperature generation of both single frequency, frequency agile terahertz radiation and multi frequency terahertz oscillators in the chip scale platform offers unique capabilities in metrology, sensing, imaging and communications.
