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The time/frequency unit is the most accurate among the seven basic units, so many measurement studies that pursue ultra-high accuracy and sensitivity will be transformed into frequency measurements to achieve higher measurement accuracy and sensitivity. For example, by measuring the relative changes in the ratio of different atomic transition frequencies, ultralight dark matter can be detected or ...
The optical properties of afterglow luminescent particles in mechanical luminescence and mechanical quenching have attracted much attention in various technological applications. A group of researchers from Pohang University of Science and Technology has attracted attention by developing an optical display technology with ALP that can write and erase messages underwater.The team is composed of Pro...
When observing biological samples under a microscope, if the medium in which the objective lens is located is different from the sample, the light beam will be interfered with. For example, when observing a water sample with a lens surrounded by air, the light bends more strongly in the air around the lens than in water.This interference can cause the measured sample depth to be smaller than the a...
Recently, the team led by Professor Lv Zhiwei and Professor Bai Zhenxu from Hebei University of Technology, in collaboration with Professor Richard Mildren from Macquarie University in Australia and Professor Takashige Omatsu from Chiba University in Japan, successfully achieved direct output of Raman vortex optical rotation with large wavelength extension in a diamond Raman laser oscillator. This...
With the rapid development of society, people's demands for energy conservation, emission reduction, and safety in automobiles are increasing. Automobile manufacturers are seeking lightweight manufacturing processes for automobiles, changing traditional component packaging processes, and so on. Laser plastic welding technology has emerged, and below is a brief sharing of the application of plastic...