Key Laboratory of Terahertz Solid State Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences Cao Juncheng and Li Hua led the research team based on the highly efficient continuous wave, electrically pumped terahertz quantum cascade laser (THz QCL) light source to overcome THz laser Narrowband bottleneck, for the first time in the world to achieve uniform, wide-spectrum THz QCL frequency comb (Frequency comb), the frequency of continuous coverage to reach 330GHz. The indicator for bound state to continuous state transition THz QCL world record. Based on this homogeneous, wide-spectrum THz QCL frequency comb, successful THz spectral analysis was achieved. Related Research Articles Homogeneous spectral spanning of terahertz semiconductor lasers with radio frequency modulation was published in the March 8th Science Report (WJ Wan, H. Li, T. Zhou, and JC Cao, Sci. Rep. 7, 44109 ( 2017)). Since the research on frequency comb got the Nobel Prize in physics in 2005, the frequency combing research in each band has gradually become a hot topic. Frequency comb consists of a series of frequency stable, equally spaced spectral lines. Because of its very high frequency stability (Hz-kHz), the frequency comb can be analogized to a single ruler for applications such as absolute frequency measurement, high precision spectral analysis, or as an ultra-stable frequency reference for other lights. In the THz band, due to the lack of an effective radiation source, the development of the THz frequency comb has a certain degree of difficulty. Among many THz radiation sources, the electrically pumped THz QCL technology is the most effective and near-practical solution for THz frequency combs. Based on the current implementation of the homogeneous, wide-spectrum THz QCL frequency comb, the team is developing dual THz QCL frequency comb spectroscopy. Compared with the current commercialized THz spectrometer, the frequency comb spectroscopy is expected to increase 3-4 orders of magnitude in the resolution of the spectrum in the future, with obvious industrialization prospect. The work was funded by the "Hundred Talents Program" of the Chinese Academy of Sciences, the major scientific instruments and equipment development of the Ministry of Science and Technology, the National Natural Science Foundation of China and the Shanghai Municipal Science and Technology Commission for International Cooperation in Science and Technology. Modular grinding station can be widely used in 3c electronic products, household and sanitary ware, traffic and transportation, auto parts accessories, aerospace workpiece and millling workpiece precision fields. It has all the characters of Force Control System, or active contact flange, Constant Force Actuator---flexible control, quick reponse, instant adjusting. Modular grinding station,grinding force control system, grinding active contact flange,grinding constant force actuator DARU Technology (Suzhou) Co., Ltd. , https://www.szforcecontrolsystem.com