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Short wave ultraviolet all solid-state coherent light sources have the characteristics of strong photon energy, practicality and precision, and high spectral resolution. They have significant application value in laser precision processing, information communication, cutting-edge science, and aerospace fields.The core component of obtaining all solid-state shortwave ultraviolet lasers is nonlinear...
On August 30th, Changguang Huaxin released its results for the first half of 2023. In the first half of this year, the company achieved a revenue of 142 million yuan, a year-on-year decrease of 43.23%; Net profit attributable to shareholders of the listed company -10.6374 million yuan, a year-on-year decrease of 117.97%.Due to macroeconomic factors such as a slowdown in economic growth, market con...
Refractory material can withstand high temperature above 1500℃. They are essential materials for industrial furnaces that produce glass or ceramics, non-ferrous metals and steel. The service life of manufactured refractory products can range from a few days to many years, depending on the material, the temperature in the melting vessel and other operating parameters. As a result, although ...
Research backgroundIn transportation, industrial production, and practical life, icing often brings great troubles, and the most serious is that during the flight of an aircraft, key components once frozen will seriously affect navigation safety.The traditional passive deicing and anti icing strategies for aircraft, such as mechanical vibration and anti freezing liquids, have problems such as inco...
The optical properties of photonic crystals are closely related to their lattice constants, which are usually required to be in the same order of magnitude as the operating wavelength. In a crystal material, the photonic crystal structure is formed by the periodic arrangement in space of units whose dielectric constant is different from that of the crystal itself, and whose lattice constant depend...