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In the interaction between ultra short and ultra strong laser and matter, electrons with short pulse width and high energy are generated, commonly referred to as "hot electrons". The generation and transport of hot electrons is one of the important fundamental issues in high-energy density physics of lasers. Superhot electrons can excite a wide range of ultrafast electromagnetic radiation, as well...
Compared to Impressionist paintings taken 50 years ago, upon closer inspection of Impressionist paintings in museums, you may notice some strange things: some are losing their bright yellow hue.Taking the dramatic sunset in Edward Munch's masterpiece "The Scream" as an example. The once bright orange yellow parts of the sky have faded to off white.Similarly, in his painting "The Joy of Life", Henr...
Not long ago, Nuburu, the developer of industrial blue light lasers, encountered a personnel change controversy. The departure of two senior executives from its board of directors resulted in a shortage of board members, and the originally scheduled special meeting for financing proposals was forced to be cancelled as a result. Recently, Nuburu announced two new director appointments that will tak...
IntroductionMetal halide perovskites have excellent optoelectronic properties and have become the undisputed "star" materials in the semiconductor field, attracting great attention from both academia and industry. With a large amount of research investment, the application of perovskite covers various optical and optoelectronic fields such as single photon sources, micro nano lasers, photodetector...
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 ...