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Recently, Tong Cunzhu, the research team of the Chinese President of Science, Chunguang Institute of Mechanical Mechanics, made important progress in the research field of photonic crystal surface emitting lasers (PCSEL), proposed a three lattice structure and achieved a low threshold 1550nm PCSEL. Relevant achievements were published in Light: Science and Application vol.13, 442024, and the famou...
Ultra short pulse lasers, such as femtosecond lasers, are increasingly becoming easy-to-use plug and play devices suitable for a wide range of industrial and biomedical applications. Fifteen years ago, the volume of these lasers was still very large, requiring daily cleaning of optical components, regular maintenance of cooling water, and continuous optimization of laser parameters. Nowada...
Recently, the research team of the High Power Laser Physics Joint Laboratory of the Chinese Academy of Sciences Shanghai Institute of Optics and Fine Mechanics identified and analyzed the abnormal near-field output of the SG - Ⅱ upgrade device by using the spatial domain computing method and the deep learning model with attention mechanism in response to the requirements of real-time and effective...
A powerful telescope in South Africa has detected a space laser 5 billion light-years away from Earth, known as the "megamaser". Scientists named it Nkalakatha, which means "big boss" in Zulu language.Nkalakatha is the farthest hydroxyl giant detected so far, discovered by the MeerKAT telescope on the first night of the survey, which is expected to include 3000 hours of observation. The team of sc...
Electro optical modulators (EOMs) are the main components in optical communication networks, which can control the amplitude, phase, and polarization of light through external electrical signals.In order to achieve ultra compact and high-performance EOM, most of today's research focuses on on-chip devices that combine semiconductor technology with state-of-the-art tunable materials. However,...