Department of Physics, Ohio State University, 191 W. Woodruff Avenue, Columbus, Ohio 43210, USA.
Opt Lett. 2010 May 15;35(10):1533-5. doi: 10.1364/OL.35.001533.
A sensor based on rotational signatures in the submillimeter (SMM) region is described. This sensor uses frequency synthesis techniques in the region around 10 GHz, with nonlinear diode frequency multiplication to 210-270 GHz. This provides not only a nearly ideal instrument function, but also frequency control and agility that significantly enhance the performance of the spectrometer as a sensor. The SMM frequencies provide significantly stronger absorptions and broader spectroscopic coverage than lower-frequency microwave systems. Among the characteristics of the sensor are absolute specificity, low atmospheric clutter, good sensitivity, and near-term paths to systems that are both compact and very inexpensive.
介绍了一种基于亚毫米波（SMM）区域旋转特征的传感器。该传感器在 10GHz 左右的区域使用频率合成技术，并通过非线性二极管倍频将频率提高到 210-270GHz。这不仅提供了近乎理想的仪器函数，还提供了频率控制和灵活性，从而显著提高了作为传感器的光谱仪的性能。与较低频率的微波系统相比，SMM 频率提供了更强的吸收和更广泛的光谱覆盖范围。该传感器的特点包括绝对特异性、低大气杂波、良好的灵敏度，以及通向既紧凑又非常便宜的系统的近期途径。
