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According to reports, a research team at the University of Chicago in the United States recently demonstrated a new method for obtaining mid infrared emission using colloidal quantum dots (QDs), which may open up new applications for mid infrared light sources.Colloidal quantum dots are a type of semiconductor nanocrystal material that provides a promising approach for the synthesis of light sourc...
Two dimensional transition metal chalcogenides have multi valley structures in their energy bands, giving them electron valley degrees of freedom, making them an ideal platform for studying multi body interactions. As the main mechanism of valley depolarization, the valley scattering process of free electrons or bound excitons is crucial for exploring excited state electron phonon interactions and...
Nikon Vision, a subsidiary of Nikon Corporation, is pleased to announce the launch of the COOLSHOT 20i GIII laser rangefinder for golfers, which is Nikon's small and lightweight model in the COOLSHOT series.While maintaining the lightweight and compact size of the COOLSHOT 20i GII, the new model notifies users through brief vibrations that the distance to the flagpole has been measured.When measur...
High power optical frequency combs play a crucial role in nonlinear precision spectroscopy, extreme ultraviolet optical frequency comb generation, nuclear atomic clock research, and other fields. Fiber optic femtosecond lasers are the preferred solution for achieving high power optical frequency combs due to their simple structure, stable performance, and easy amplification. However, due to the un...
Professor Zhang Huaijin and Yu Haohai from the Institute of Crystal Materials of Shandong University (the State Key Laboratory of Crystal Materials) proposed a spatial harmonic modulation strategy, which realizes the phase matching conditions that can be manipulated artificially in the new quartz crystal, and realizes the effective frequency doubling within the VUV range. The relevant research is ...