Super-Resolution Terahertz Wave Spectrometer

被引：0

作者：

Wei B. ^{[1
]}

Yuan H. ^{[2
,3
]}

Zhao Y. ^{[3
]}

Zhang C. ^{[4
]}

机构：

[1] Office of Academic Affairs, Jilin Institute of Chemical Technology, Jilin, 132022, Jilin

[2] Physikalisches Institut, Johann Wolfgang Goethe-Universität, Frankfurt am Main

[3] Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, School of Optoelectronics, Beijing Institute of Technology, Beijing

[4] Key Laboratory of Terahertz Optoelectronics, Department of Physics, Capital Normal University, Beijing

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2019年 / 46卷 / 06期

关键词：

Interference; Measurement; Spectroscopy; Super-resolution; Terahertz;

D O I：

10.3788/CJL201946.0614036

中图分类号：

学科分类号：

摘要：

Herein, a super-resolution terahertz wave spectrometer system is proposed based on optical interference theory. The interference system can be used for the multipoint simultaneous detection of signals based on a self-developed broadband GaN array detector. The proposed spectrometer has high precision and can achieve super-resolution. The beam quality of the source to be tested can be measured based on the two-dimensional intensity distribution obtained by the proposed array detector. Continuous terahertz waves, generated by a multiplier-chain emission source with a frequency range from 470 to 720 GHz, are used as the testing source to verify the proposed spectrometer. At a detection distance of 75 mm, the spectral resolution and the measurement accuracy are determined to be 100 MHz and 0.1%, respectively. These values are 20 times the resolution and accuracy limits under the same detection conditions. © 2019, Chinese Lasers Press. All right reserved.

引用

共 20 条

[1] Peiponen K.E., Zeitler A., Kuwata-Gonokami M., Terahertz Spectroscopy and Imaging, pp. 29-40, (2013)
[2] Lu T.L., Yuan H., Wu T., Et al., Continuous terahertz spectrum measurement based on interferometry, Laser & Optoelectronics Progress, 53, 4, (2016)
[3] Yang Y.P., Zhang Z.W., Terahertz Imaging Technology, pp. 2-4, (2008)
[4] Fattinger C., Grischkowsky D., Terahertz beams, Applied Physics Letters, 54, 6, pp. 490-492, (1989)
[5] Capasso F., Paiella R., Martini R., Et al., Quantum cascade lasers: ultrahigh-speed operation, optical wireless communication, narrow linewidth, and far-infrared emission, IEEE Journal of Quantum Electronics, 38, 6, pp. 511-532, (2002)
[6] Yokoyama S., Nakamura R., Nose M., Et al., Terahertz spectrum analyzer based on a terahertz frequency comb, Optics Express, 16, 17, pp. 13052-13061, (2008)
[7] Yasui T., Hayashi K., Ichikawa R., Et al., Real-time absolute frequency measurement of continuous-wave terahertz radiation based on dual terahertz combs of photocarriers with different frequency spacings, Optics Express, 23, 9, pp. 11367-11377, (2015)
[8] Lin Q.G., Pan X.J., Zheng S.Q., Et al., Crossed and balanced single-shot electro-optic measurement for terahertz pulses, Chinese Journal of Lasers, 44, 1, (2017)
[9] Gaal P., Raschke M.B., Reimann K., Et al., Measuring optical frequencies in the 0-40 THz range with non-synchronized electro-optic sampling, Nature Photonics, 1, 10, pp. 577-580, (2007)
[10] Yasui T., Kabetani Y., Saneyoshi E., Et al., Terahertz frequency comb by multifrequency-heterodyning photoconductive detection for high-accuracy, high-resolution terahertz spectroscopy, Applied Physics Letters, 88, 24, (2006)

← 1 2 →