论文标题
用于光谱量身定制的双弯曲光谱的集成锂二甲酸锂电光平台
An integrated lithium-niobate electro-optic platform for spectrally tailored dual-comb spectroscopy
论文作者
论文摘要
芯片上的高分辨率大光谱带宽光谱仪将为气相分子指纹创造新的机会，尤其是在环境传感中。一个足够高的分辨率在大气压下观察到过渡，并同时对多个原子或分子的敏感检测是关键挑战。在这里，基于电磁微孔的双重炸弹干涉仪在低损失的二甲甲虫在绝缘子纳米光子平台上制造，在这一成就方面表现出了重大进展。以10 GHz（0.33 cm-1）的分辨率跨越1.6 THz（53 cm-1）的光谱是在单个测量中获得的，而无需频率扫描或运动部件。系统的频率敏捷性使光谱尺寸的多路复用感应允许询问非粘附的光谱区域，此处以6.6 THz（220 cm-1）隔开，而不会损害信号噪声比率。
A high-resolution broad-spectral-bandwidth spectrometer on a chip would create new opportunities for gas-phase molecular fingerprinting, especially in environmental sensing. A resolution high enough to observe transitions at atmospheric pressure and the simultaneous sensitive detection of multiple atoms or molecules are the key challenges. Here, an electro-optic microring-based dual-comb interferometer, fabricated on a low-loss lithium-niobate-on-insulator nanophotonic platform, demonstrates significant progress towards such an achievement. Spectra spanning 1.6 THz (53 cm-1) at a resolution of 10 GHz (0.33 cm-1) are obtained in a single measurement without requiring frequency scanning or moving parts. The frequency agility of the system enables spectrally-tailored multiplexed sensing, which allows for interrogation of non-adjacent spectral regions, here separated by 6.6 THz (220 cm-1), without compromising the signal-to-noise ratio.
