IT House News on April 25th, the opening ceremony of the 2024 Zhongguancun Forum Annual Meeting was held today, and the thinnest optical crystal known to the world invented by scientists invented by Chinese scientists – Lingfang nitride boronEssence
According to reports, optical crystals are the “heart” of laser technology.Laser technology has important applications in the fields of micro -nanoid processing, quantum light sources, biological monitoring and other fields.Integrated, miniaturized, and multi -functionalization is the development direction of future laserAfter repeated combination of Chinese scientists, the lock -locking light boron nitride is the optimal choice.
Peking University’s scientific research team creatively proposed the “corner phase matching theory”, and used boron nainer to prepare ultra -thin, high -energy -effective optical crystal “corner diamond boron nitride” for the first time.The thickness is only micron level, and the energy efficiency is at least 100 times, which has laid the theoretical and material foundation for the new generation of laser technology.
IT House inquiry was informed that in December 2023, Academician Wang Engo, Wang Engo, Professor Liu Kaihui, Institute of Concrete Physics and Materials Physics, Institute of Concrete Physics and Materials of the School of Physics of the School of Physics of Peking UniversityEssence
Related research results are published online in the magazine of “Physical Review Letters”.
The research team explored and found that the two -dimensional light elemental material diamond boron nitride has deep ultraviolet band gaps, excellent physical chemical stability, high laser damage threshold and non -linear coefficient. It is a very ideal ultraviolet photoresal crystal material.Based on the theory of interface turning corner phase matching theory, the team successfully prepared the third type of optical crystal, and the corner diamond -nitride optical crystals.
Bone nitrogen crystals have achieved a breakthrough in optical multiplier conversion efficiency within the wide spectrum range. It can reach 8%at 3.2 micron thickness. Compared with traditional crystals, it is 100-10000 times compared to traditional crystals. It is the thinnest known in the world.Optical crystalEssence
In addition, the corner phase matches the new function of boron -nitride, so that it can effectively regulate the polarization of the parameter light.This breakthrough lays the theoretical and material foundation for the innovation of the new generation of “extreme wavelength”, “extreme size” and “extreme stability” laser technologyEssence
Professor Liu Kaihui said that “the application of this theory is expected to reduce the size of the laser to micron level. Some materials that cannot make optical crystals in the past are also expected to rejuvenate in the rotation of the material stacking angle.”
