نتایج جستجو برای: terahertz emitters
تعداد نتایج: 17467 فیلتر نتایج به سال:
Abstract Spintronic metal thin films excited by femtosecond laser pulses have recently emerged as excellent broadband sources of terahertz (THz) radiation. Unfortunately, these emitters transmit a significant proportion the incident excitation laser, which causes two issues: first, transmitted light can interfere with measurements and so must be attenuated; second, is effectively wasted it does...
⎯The terahertz time-domain spectroscopy (THz-TDS) system and the related technology and the applications in Capital Normal University are presented. The most often used THz-TDS system as a spectroscopic measurement setup in our lab is introduced in detail, including the THz radiation source, the THz detection method and its measurement, and the control system. THz spectra of various materials i...
We analyze the operation of graphene n+-i-n-n+ field-effect transistors (GFETs) and lateral diodes (GLDs) with injection ballistic electrons into n-region. The momentum transfer injected could lead to an effective Coulomb drag quasi-equilibrium in n-region plasma instability GFETs GLDs. enables generation terahertz radiation. obtained results can be used for optimization structures under consid...
Polarization analyses of the terahertz (THz) emission from Bi2Sr2CaCu2O8+δ whisker crystals used for superconducting THz emitters were conducted. The mode was estimated by a simple polarization measurement, and simulation study conducted to examine validity analysis. refractive index revealed through greater than that bulk single agreed well with our previous report. suggested complex plasma ex...
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