New Terahertz Spectroscopy System Balances Resolution Trade-offs
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January 29, 2026
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2 min
Researchers at Tianjin University, China, have developed a groundbreaking terahertz (THz) spectroscopy system called SPRATS, which combines high-resolution spectral data capture with near-field spatial detail. This innovative system integrates asynchronous optical sampling (ASOPS) with a micrometer-scale photoconductive probe (PPB), enabling the study of THz resonant structures with enhanced resolution. The system significantly enhances the exploration of functional materials and chemical sensing, representing a pivotal advancement in terahertz photonics and materials research.
1. SPRATS system developed by Tianjin University integrates ASOPS and PPB. 2. Achieves spatial resolution of 20 µm and spectral resolution of 100 MHz. 3. Enables detailed study of THz resonant structures. 4. Addresses limitations of conventional THz setups. 5. Can aid in developing THz sensors and narrow-linewidth filters. 6. Enhances understanding of light-matter interactions. 7. Utilized to study silicon dual-period grating with GMR.
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