Accurate determination of terahertz optical constants by vector network analyzer of Fabry-Perot response

作者：Sun, Wenfeng; Yang, Bin; Wang, Xinke; Zhang, Yan; Donnan, Robert^*

来源：Optics Letters, 2013, 38(24): 5438-5441.

DOI：10.1364/OL.38.005438

• TIME-DOMAIN SPECTROSCOPY
• THZ
• PARAMETERS
• DNA

We present a method based on a Fabry-Perot model to efficiently and accurately estimate optical constants of wafer samples in transmission-only measurements performed by a vector network analyzer (VNA). The method is demonstrated on two separate wafer samples: one of silicon and the other of polymethylmethacrylate. Results show that the method can not only acquire optical constants accurately and simply over a broad frequency domain but also overcome the limitations of calculation for dispersive and lossy materials to which existing methods are susceptible, such as those based on VNA-driven quasi-optical transmissometers and terahertz time-domain spectrometry.

• 出版日期2013-12-15
• 单位首都师范大学