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Around the poles, ice accumulated over millions of years can reach depths of several kilometers. The undisturbed deep ice preserves information about the past. The air bags and particles trapped in the ice tell scientists what the atmosphere used to be like. This has aroused great interest among paleoclimatologists in glacier ice cores.By regularly sampling the ice core at its depth, they can reco...
Modern laser technology urgently requires nonlinear optical materials that can generate coherent light through second harmonic generation. However, only a small portion of the nonlinear optical properties of non centrosymmetric crystal materials have been experimentally or theoretically studied, and exploration for high-performance nonlinear optical crystal materials is still very limited.Recentl...
Semiconductor quantum dots have the advantages of high quantum yield, narrow emission spectrum, and compatibility with solution processes. They have shown broad application prospects and enormous economic value in the field of optoelectronic materials and devices, and related research has won the Nobel Prize in Chemistry in 2023.Compared with traditional II-VI and III-V quantum dots (such as CdSe,...
Figure: a. Schematic diagram of the HCF-LN-CPPLN experimental setup. W. CaF? Window M, mirror.b. The bright white light circular spots emitted by the CPPLN sample.c. The first-order diffraction beam of B displays a colorful rainbow pattern from purple to red.d. The HCF-LN-CPPLN module generates normalized spectra of the output full spectrum laser signal through the second NL HHG and third NL SPM e...
Tongkuai Optoelectronic Devices, a global leader in vertical cavity laser emitters (VCSEL) and laser diodes (PD) solutions based in Germany, and a Spanish expert in high-speed optical network solutions, KDPOF, showcased the first 980 nm multi gigabit interconnect system for automotive systems at last week's ECOC.Both companies are committed to achieving the most advanced optical data communication...