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Product Introduction
This ultra-wideband spin-based terahertz source represents a significant achievement of the national major scientific research instrument development project led by Nanjing University. The core structure of the spin terahertz source is a ferromagnetic–nonmagnetic heterostructure; under femtosecond laser pulse pumping, it induces the generation, transport, and conversion of ultrafast spin currents into spin–charge current radiation, producing ultra-wideband terahertz pulses.The terahertz spectrum width continuously spans from 0.1 to 30 THz, with no gaps caused by phonon absorption or other factors. Supported by a national major scientific research instrument development project, through optimization of the materials and structure of the spin-based terahertz source, its generated terahertz electric field strength exceeds 1.96 MV/cm—representing the highest level achieved for spin-based terahertz sources reported to date.
Leading Feature:
Continuous ultra-wide spectrum without spectral gaps (0.1–30 THz, pumped with 15 fs pulses).
High production efficiency (for ZnTe crystals thicker than 1 mm).
Capable of generating strong terahertz fields (>1.96 MV/cm with 6 mJ pumping energy; currently the highest reported level).
The pump wavelength range is broad (from mid-infrared to X-rays), compatible with various types of femtosecond lasers including titanium gemstone lasers (800 nm), ytterbium-doped lasers (1030 nm), and erbium-doped lasers (1550 nm).
Compatible with fiber-optic and solid-state femtosecond lasers, as well as femtosecond oscillators and amplifiers.
Line polarization can be continuously adjusted over 360 degrees; a special design enables the generation of wide-spectrum circularly polarized terahertz waves.
High stability and radiation resistance.
Typical Application
Ultra-wideband terahertz time-domain spectroscopy
Light-pumped terahertz ultra-wideband detection
Terahertz ultra-wideband pumping – Terahertz ultra-wideband detection
Terahertz wide-field imaging
Terahertz Near-field Imaging Microscope/Terahertz Scanning Tunneling Microscope
Terahertz Electron Acceleration
Metric Parameters:
Product Model | T-TS-S06 | T-TS-D50 |
Big or small | 6×6 mm | Diameter 50 mm |
Thickness | 1 mm | 3 mm |
Underlayment | High Resistivity Silicon | |
Spectrum Width | 0.1-30 THz (15fs pump) 0.1-15 THz (50fs pump) (no spectral gap) | |
Terahertz field strength[1] | 0~1.96MV/cm | |
Generate efficiency | ZnTe crystal with a thickness of>1 mm | |
Maximum pump power density | 0.7 mJ/cm2 | |
Polarization state[2] | Line polarization can be continuously adjusted over 360 degrees; its special design enables wide-spectrum circular polarization generation. | |
Pump center wavelength | 800 nm (other wavelengths are customizable, with a range of 20 nm to 2 μm) | |
Pour ：
[1] The value of 1.96 MV/cm is obtained under a pumping power of 6 mJ.
[2] The polarization state is adjusted by an externally applied rotating magnet block. The special design enables switching between online polarization and wide-spectrum circular polarization states via the rotating magnet block.
Product Picture
Test Curve
