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Matter manipulation in terahertz range calls for a strong-field broadband light source. Here, we present a scheme for intense terahertz generation from DSTMS crystal driven by a high power optical parametric chirped pulse amplifier. The generated terahertz energy is up to 175 µJ with a peak electric field of 17 MV/cm. The relationship between terahertz energy, conversion efficiency, and pump fluence is demonstrated. This study provides a powerful driving light source for strong-field terahertz pump-probe experimentation.
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http://dx.doi.org/10.1364/OE.496248 | DOI Listing |
J Colloid Interface Sci
August 2025
Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China; Terahertz Technology Innovation Research Institute, Terahertz Spectrum and Imaging Technology Cooperative Innovation Center, Shanghai Key Lab of Modern Optical System, School of Optical-Electrical and Computer Engin
Precise engineering of hydrophobic microenvironments in synthetic peptide-catecholamine co-assemblies remains challenging for tunable fluorescence. Hierarchical nanostructures were constructed through sequence-specific peptide encoding (GYK tripeptide and Ac-IIIGYK-NH₂ hexapeptide) and co-assembly with catecholamines of graded hydrophobicity. Structural dynamics were analyzed via molecular simulations, HPLC, AFM, and spectroscopy.
View Article and Find Full Text PDFiScience
September 2025
Center for Biophotonics, Institute of Medical Robotics, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China.
Ptychography is a phase imaging technique that leverages intensity images obtained by translating objects across an illumination beam. Deep learning has demonstrated promising potential in solving inverse problems, offering effective solutions for phase retrieval. However, obtaining substantial amounts of labeled data in the terahertz (THz) bands for pretraining the neural networks is very challenging, thereby limiting the generalization ability of the networks.
View Article and Find Full Text PDFNat Commun
August 2025
State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, China.
Modern reconnaissance technologies, including hyperspectral and multispectral intensity imaging across optical, thermal infrared, terahertz, and microwave bands, can detect the shape, material composition, and temperature of targets. Consequently, developing a camouflage technique that seamlessly integrates both spatial and spectral dimensions across all key atmospheric windows to outsmart advanced surveillance has yet to be effectively developed and remains a significant challenge. In this study, we propose a digital camouflage strategy that covers the optical (0.
View Article and Find Full Text PDFNat Commun
August 2025
State Key Laboratory of Photonics and Communications, School of Electronics, Peking University, Beijing, China.
Capturing multi-dimensional optical information is indispensable in modern optics. However, existing photodetectors can at best detect light fields whose wavelengths or polarizations are predefined at several specific values. Integrating broadband high-dimensional continuous photodetection including intensity, polarization, and wavelength within a single device still poses formidable challenges.
View Article and Find Full Text PDFBull Exp Biol Med
August 2025
Novosibirsk State University, Novosibirsk, Russia.
The morphofunctional characteristics of rabbit corneas were studied after terahertz (THz) irradiation at a frequency of 2.3 THz with varying durations (15 or 30 min) or intensities (0.012 mW/cm (38°C), 0.
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