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On February 11th, global industrial fiber laser giant IPG Photonics announced its financial performance for the fourth quarter and full year of 2024. Annual sales have fallen below the $1 billion mark for the first time, with a year-on-year decline of 24% and a pre tax loss of up to $162 million. As an industry leader, IPG's financial report not only reflects the deep adjustment faced by the ind...
The research team led by Professor Gao Xiaoming and Professor Liu Kun of the Chinese Academy of Sciences Hefei Institute of Physical Sciences recently designed a concentration independent pressure sensing technology for high-temperature combustion diagnosis. This method is based on dual color laser absorption spectroscopy.The results of this study have been published in Optics Letters.Aircraft eng...
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...
The beam emitted by almost all laser systems follows the Angle pattern of Gaussian distribution. The Gaussian irradiance distribution means that irradiance has a smooth peak at the center point and slowly declines toward the edge. In theory, the irradiance level of a Gaussian distribution can never reach zero, which means that the distribution can expand indefinitely. This phenomenon in the laser ...
Recently, the research team of the High Power Laser Element Technology and Engineering Department of the Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, has made new progress in evaluating the laser damage resistance and damage mechanism of 532nm thin film polarizers using different laser damage test protocols. The related achievements were published in Optical Materi...