Spectrum measurement method for free electron laser terahertz source

被引：0

作者：

Cao L. ^{[1
]}

Yin Z. ^{[1
]}

Ding J. ^{[1
]}

Xia H. ^{[1
]}

机构：

[1] School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan

来源：

Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2020年 / 48卷 / 11期

关键词：

Fourier transform infrared spectrometer; Free electron laser; Quantum cascade laser; Spectrum measurement; THz source;

D O I：

10.13245/j.hust.201101

中图分类号：

学科分类号：

摘要：

To solve the problem of spectrum measurement under conditions that the power generated by the free electron laser terahertz (FEL-THz) source is low during the debugging process, and there is also strong radiation interference on the electronic measurement equipment, the stepper-mode of Fourier transform infrared spectrometer was used to obtain the detector signal, the high-speed data acquisition card was utilized to collect discrete signal points, and a homemade program was written to process the signal. The spectrum measurement system was successfully realized for the initial commissioning of the FEL-THz source, and a commercial quantum cascade laser was used to verify the reliability of the system at different levels of repetition rate and output power. Results show that this method is well suitable for the spectrum measurement of THz pulse with repetition rate higher than 1 Hz and average power in the level of μW. © 2020, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.

引用

页码：1 / 4

页数：3

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