正入射反射式太赫兹光谱测量的不确定度分析

太赫兹时域光谱技术能够快速、宽频带测量物质在太赫兹频段的光学或介电常数, 是物质识别的重要技术.光学常数的测量准确度完全受到复杂的测量过程和数据处理所影响.针对正入射反射式THz光谱测量, 分析了在测量材料介电特性过程中的误差来源, 它们包括太赫兹幅值误差、位置误差以及样品倾斜误差.建立了单独表征每个误差来源对于光学常数影响的不确定度分量的公式.利用MATLAB仿真了每个误差来源对于光学参数不确定度的影响.

Abstract

Terahertz time-domain spectroscopy (THz-TDS) is a significant technique for characterizing materials as it allows fast and broadband measurement of optical constants in the THz regime. The measurement precision of the constants is highly influenced by the complicated measurement procedure and data processing. With particular emphasis on normal reflection measurement, the sources of error including amplitude errors and positioning error and sample misalignment in determining the dielectric properties of materials were analyzed. The uncertainty that characterizes the influence on the optical constants for each source was formulated independently. Several simulations were carried out to illustrate the relations between the error sources and the uncertainty of the optical constants.

参考文献

[1] Tanaka K, Hirori H, Nagai M. THz Nonlinear Spectroscopy of Solids ［J］. IEEE Transactions on Terahertz Science & Technology, 2011, 1(1):301-312.

[2] Federici J F. Review of Moisture and Liquid Detection and Mapping using Terahertz Imaging［J］. Journal of Infrared Millimeter & Terahertz Waves, 2012, 33(2):97-126.

[3] Hübers H W, Pavlov S G, Richter H, et al. High-resolution gas phase spectroscopy with a distributed feedback terahertz quantum cascade laser ［J］. Applied Physics Letters, 2006, 89(6):061115-061115-3.

[4] Hangyo M, Nagashima T, Nashima S. Spectroscopy by pulsed terahertz radiation ［J］. Measurement Science & Technology, 2002, 13(13):1727-1738.

[5] Wang X, Sun W, Zhang Y. A novel normal reflection terahertz spectrometer ［J］. Optik, 2010, 121(12):1148-1153.

[6] Rnne C, Thrane L, strand P O, et al. Investigation of the temperature dependence of dielectric relaxation in liquid water by THz reflection spectroscopy and molecular dynamics simulation［J］. Journal of Chemical Physics, 1997, 107(14):5319-5331.

[7] Jepsen P U, Mller U, Merbold H. Investigation of aqueous alcohol and sugar solutions with reflection terahertz time-domain spectroscopy.［J］. Optics Express, 2007, 15(22):14717-37.

[8] Hirori H, Yamashita K, Nagai M, et al. Attenuated Total Reflection Spectroscopy in Time Domain Using Terahertz Coherent Pulses［J］. Japanese Journal of Applied Physics, 2004, 43(10A):361-363.

[9] Hirori H, Yamashita K, Nagai M, et al. Attenuated Total Reflection Spectroscopy in Time Domain Using Terahertz Coherent Pulses［J］. Japanese Journal of Applied Physics, 2004, 43(10A):361-363.

[10] Duvillaret L, Garet F, Coutaz J L. Influence of noise on the characterization of materials by terahertz time-domain spectroscopy ［J］. J. Opt. Soc. Amer. B, 2000, 17(3): 452-461.

[11] Withayachumnankul W, Fischer B M, Lin H, et al. Uncertainty in terahertz time-domain spectroscopy measurement［J］. Journal of the Optical Society of America B, 2008, 25(6):1059-1072.

[12] Lin H, Mickan S P, Fischer B M, et al. Analysis of measurement uncertainty in THz-TDS［J］. Proceedings of SPIE-The International Society for Optical Engineering, 2007, 6593.

[13] Soltani A, Probst T, Busch S F, et al. Error from Delay Drift in Terahertz Attenuated Total Reflection Spectroscopy ［J］. Journal of Infrared Millimeter & Terahertz Waves, 2014, 35(5):468-477.

[14] Yang Fei, Liu Li-Ping, Song Mao-jiang, et al. Uncertainty in Terahertz time-domain spectroscopy measurement of liquids［J］. J Infrared Milli Terahz Waves, 2017, 38(2): 229-247.

[15] Hangyo M, Nagashima T, Nashima S. Spectroscopy by pulsed terahertz radiation［J］. Measurement Science & Technology, 2002, 13(13):1727-1738.

[16] Khazan M, Meissner R, Wilke I. Convertible transmission-reflection time-domain terahertz spectrometer ［J］. Review of Scientific Instruments, 2001, 72(8): 3427-3430.

[17] Vartiainen E M, Ino Y, Shimano R, et al. Numerical phase correction method for terahertz time-domain reflection spectroscopy［J］. Journal of Applied Physics, 2004, 96(8):4171-4175.

[18] Duvillaret L, Garet F, Roux J F, et al. Analytical modeling and optimization of terahertz time-domain spectroscopy experiments, using photoswitches as antennas［J］. IEEE Journal of Selected Topics in Quantum Electronics, 2001, 7(4):615-623.

[19] Gürtler A, Winnewisser C, Helm H, et al. Jepsen, Terahertz pulse propagation in the near field and the far field［J］. J. Opt. Soc. Am. A, 2000, 17,74-83.

杨霏, 刘丽萍, 宋茂江, 韩锋, 沈力, 胡鹏飞, 张放. 正入射反射式太赫兹光谱测量的不确定度分析[J]. 红外与毫米波学报, 2017, 36(1): 10. YANG Fei, LIU Li-Ping, SONG Mao-Jiang, HAN Feng, SHEN Li, HU Peng-Fei, ZHANG Fang. Uncertainty in normal reflection terahertz spectroscopy measurement[J]. Journal of Infrared and Millimeter Waves, 2017, 36(1): 10.

正入射反射式太赫兹光谱测量的不确定度分析

关于本站 Cookie 的使用提示

全站搜索

正入射反射式太赫兹光谱测量的不确定度分析

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索