News on China's scientific and technological development.
- Thread starter Quickie
- Start date
MSS clearly needs to be more hawkish in defending China against plausibly deniable assassinations. Sorry for the off-topic. I'll end it here unless you have some additional thoughts on this type of problem.
Huawei & Xiaomi seemed to have climbed the most in PC and tablet market. The two combined is under 20 million per quarter, so much smaller than phone market.
Dell losing out big time after it's nonsensical removing China supply chain announcement.
Apple losing out in tablet market
China RE processing tech has been shadow controlled since...ever to be honest, this is now just making it officially.
Next Generation of laser technology lays the theoretical and material foundations..
Optical crystals can realize functions such as frequency conversion, parameter amplification, and signal modulation, and are the "heart" of laser technology. After years of research, a team from Peking University creatively proposed a new optical crystal theory and used the light element material boron nitride to prepare for the first time an ultra-thin, high-energy-efficiency optical crystal "corner rhombus boron nitride" (TBN). A new generation of laser technology lays the theoretical and material foundations. The results were recently published in the authoritative physics journal Physical Review Letters.
academician of the Chinese Academy of Sciences and professor of the School of Physics of Peking University, said in an exclusive interview with a reporter from Xinhua News Agency that this achievement is not only China's original breakthrough in optical crystal theory, but also opens up a new field of using light element two-dimensional thin film materials to prepare optical crystals. , and the thickness of the prepared TBN is only on the order of microns, making it the thinnest optical crystal known in the world. Its energy efficiency is 100 to 10,000 times higher than that of traditional crystals of the same thickness.
Phase is a measure that describes changes in the waveform of a light wave. Only when the light waves in the crystal are phase-matched and in sync can a laser with ideal efficiency and power be output. In recent years, due to the limitations of traditional theoretical models and material systems, existing crystals have been unable to meet the development needs of miniaturization, high integration, and functionalization of lasers.
To this end, Professors and director of the Institute of Condensed Matter Physics and Materials Physics of the School of Physics at Peking University and deputy director of the Light Element Quantum Materials Interdisciplinary Platform at the Beijing Huairou Comprehensive National Science Center, and led a research team to propose a new "corner phase matching" theory". The team discovered that by stacking boron nitride materials like "building blocks" and then "rotating" them to a special angle, the phases of different light waves can be aligned to form a highly energy-efficient optical crystal TBN.
"If the laser generated in the crystal is regarded as a team, using the 'turning' method can make the direction and pace of all team members highly coordinated, which can improve the energy conversion efficiency of the laser." he said that the thickness of TBN is only 1 to 10 microns, which is equivalent to one-thirtieth of the thickness of ordinary A4 paper. However, the thickness of current optical crystals is mostly on the order of millimeters or even centimeters.
"Optical crystals are the cornerstone of the development of laser technology." he said that TBN has ultra-thin size, excellent integrability and new functions, and is expected to achieve new application breakthroughs in the fields of quantum light sources, photonic chips, artificial intelligence and other fields in the future..
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@tokenanalyst this seems very big breakthrough .. also very useful in next generation semiconductor tech..
Chinese scientists develop ultra-thin, energy-efficient optical crystals
Optical crystals can realize functions such as frequency conversion, parameter amplification, and signal modulation, and are the "heart" of laser technology. After years of research, a team from Peking University creatively proposed a new optical crystal theory and used the light element material boron nitride to prepare for the first time an ultra-thin, high-energy-efficiency optical crystal "corner rhombus boron nitride" (TBN). A new generation of laser technology lays the theoretical and material foundations. The results were recently published in the authoritative physics journal Physical Review Letters.
academician of the Chinese Academy of Sciences and professor of the School of Physics of Peking University, said in an exclusive interview with a reporter from Xinhua News Agency that this achievement is not only China's original breakthrough in optical crystal theory, but also opens up a new field of using light element two-dimensional thin film materials to prepare optical crystals. , and the thickness of the prepared TBN is only on the order of microns, making it the thinnest optical crystal known in the world. Its energy efficiency is 100 to 10,000 times higher than that of traditional crystals of the same thickness.
Phase is a measure that describes changes in the waveform of a light wave. Only when the light waves in the crystal are phase-matched and in sync can a laser with ideal efficiency and power be output. In recent years, due to the limitations of traditional theoretical models and material systems, existing crystals have been unable to meet the development needs of miniaturization, high integration, and functionalization of lasers.
To this end, Professors and director of the Institute of Condensed Matter Physics and Materials Physics of the School of Physics at Peking University and deputy director of the Light Element Quantum Materials Interdisciplinary Platform at the Beijing Huairou Comprehensive National Science Center, and led a research team to propose a new "corner phase matching" theory". The team discovered that by stacking boron nitride materials like "building blocks" and then "rotating" them to a special angle, the phases of different light waves can be aligned to form a highly energy-efficient optical crystal TBN.
"If the laser generated in the crystal is regarded as a team, using the 'turning' method can make the direction and pace of all team members highly coordinated, which can improve the energy conversion efficiency of the laser." he said that the thickness of TBN is only 1 to 10 microns, which is equivalent to one-thirtieth of the thickness of ordinary A4 paper. However, the thickness of current optical crystals is mostly on the order of millimeters or even centimeters.
"Optical crystals are the cornerstone of the development of laser technology." he said that TBN has ultra-thin size, excellent integrability and new functions, and is expected to achieve new application breakthroughs in the fields of quantum light sources, photonic chips, artificial intelligence and other fields in the future..
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@tokenanalyst this seems very big breakthrough .. also very useful in next generation semiconductor tech..
Very interesting, photonics could be major application for this.
supercat
Major
China's first self-developed dual-energy MRI scanner: