[1] Tonouchi M. Cutting-edge Terahertz technology[J]. Nature Photonics, 1, 97-105(2007).
[2] Scalari G, Walther C, Faist J, et al. Electrically switchable, two-color quantum cascade laser emitting at 1.39 and 2.3 THz[J]. Applied Physics Letters, 88, 141102(2006).
[3] Bratman V, Glyavin M, Idehara T, et al. Review of subterahertz and terahertz gyrodevices at IAP RAS and FIR FU[J]. IEEE Transactions on Plasma Science, 37, 36-43(2009).
[4] Zhang Baolong, Ma Zhenzhe, Ma Jinglong, et al. 1.4-mJ high energy terahertz radiation from lithium niobates[J]. Laser & Photonics Reviews, 15, 2000295(2021).
[5] Chiu Y C, Huang Y C, Wang T D, et al. Generation of 4 THz radiation from lithiumniobate offaxis THz parametric oscillat[C]Proceedings of the 43rd International Conference on Infrared, Millimeter, Terahertz Waves (IRMMWTHz2018). 2018.
[7] Williams G P. FAR-IR/THz radiation from the Jefferson Laboratory, energy recovered linac, free electron laser[J]. Review of Scientific Instruments, 73, 1461-1463(2002).
[8] Tecimer M, Holldack K, Elias L R. Dynamically tunable mirrors for THz free electron laser applications[J]. Physical Review Special Topics - Accelerators and Beams, 13, 030703(2010).
[9] Gavrilov N G, Knyazev B A, Kolobanov E I, et al. Status of the Novosibirsk high-power terahertz FEL[J]. Nuclear Instruments and Methods in Physics Research Section A:Accelerators, Spectrometers, Detectors and Associated Equipment, 575, 54-57(2007).
[10] Jongma R T, Van Der Ze W J, Van Der Meer A F G, et al. Design of the Nijmegen highresolution THzFEL[C]Proceedings of the 30th International Free Electron Laser Conference, FEL 2008. Gyeongju, Kea, 2008: 200203.
[11] Tecimer M, Brunel L C, Van Tol J. A design study of a FIRTHz FEL f high magic field research[C]Proceedings of FEL 2006, BESSY. Berlin, Germany, 2006: 327330.
[12] Militsyn B L, von Helden G, Meijer G J M, et al. FELICE—the free electron laser for intra-cavity experiment[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 507, 494-497(2003).
[13] Klopf J M, Helm M, Kehr S C, et al. FELBEupgrades status of the IRlTHz FEL user facility at HZDR[C]Proceedings of the 43rd International Conference on Infrared, Millimeter, Terahertz Waves (IRMMWTHz2018). 2018.
[18] Dou Y H, Shu X J, Wang Y Z. 3D-simulations of transverse optical modes of the free electron laser resonator with hole output coupling[J]. Communications in Computational Physics, 1, 920-929(2006).