标题： 中红外基于低驱动功率芯片源的双梳光谱技术 显示英文标题

标题： Mid-infrared dual-comb spectroscopy with low drive-power on-chip sources

摘要： 两种消耗不到 1 W 电功率的半导体光学频率梳被用于展示高灵敏度中红外双梳谱技术，在重要的 3-4 $\mu$ 米光谱区域进行了验证。 这些设备长 4 毫米，宽 4 微米，每个平均发射 8 mW 的光功率。 通过甲烷和氯化氢的测量展示了光谱传感性能，光谱覆盖范围为 33 cm$^{-1}$ （1 THz），0.32 cm$^{-1}$ （9.7 GHz）的频率采样间隔，并且在 100 $\mu$ 秒积分时间内峰值信噪比约为 100。 单片设计、低驱动功耗以及直接产生中红外辐射对于未来地面和空间应用中的便携式宽带光谱仪器具有很高的吸引力。 显示英文摘要

摘要： Two semiconductor optical frequency combs consuming less than 1 W of electrical power are used to demonstrate high-sensitivity mid-infrared dual-comb spectroscopy in the important 3-4 $\mu$m spectral region. The devices are 4 millimeters long by 4 microns wide, and each emits 8 mW of average optical power. The spectroscopic sensing performance is demonstrated by measurements of methane and hydrogen chloride with a spectral coverage of 33 cm$^{-1}$ (1 THz), 0.32 cm$^{-1}$ (9.7 GHz) frequency sampling interval, and peak signal-to-noise ratio of ~100 at 100 $\mu$s integration time. The monolithic design, low drive power, and direct generation of mid-infrared radiation are highly attractive for portable broadband spectroscopic instrumentation in future terrestrial and space applications.