井冈山Advanced application of synthetic diamond

Synthetic diamonds are grown in a laboratory to mimic the natural formation of natural diamonds. There are no obvious differences in crystal structure integrity, transparency, refractive index and dispersion. Synthetic diamond has all the excellent physical and chemical properties of natural diamond, making it widely used in precision cutting tools, wear-resistant devices, semiconductors and electronic devices, low magnetic detection, optical Windows, acoustic applications, biomedicine, jewelry and other aspects.

Diamond is currently the hardest mineral in nature. In addition, it has high thermal conductivity, high wear resistance and chemical stability. These characteristics determine that diamond can also be a superior cutting material. Through the artificial cultivation of large single crystal diamond, ultra-precision processing can be further realized, which can reduce cost and improve technology.

Optical application field

Diamond has a high transmittance of the whole band from X-ray to microwave, and is an excellent optical material. For example, MPCVD single crystal diamond can be made into a high-power laser device energy input window, but also can be made into the diamond window of the space detector. Diamond has the characteristics of heat shock resistance, chemical corrosion resistance and mechanical wear resistance, and has corresponding research and application in infrared window, microwave window, high power laser window, thermal imaging system window, X-ray window and so on.

Applications of quantum devices

Diamond containing nitrogen vacancy defects has unique quantum properties, which can operate NV color centers with specific light beams at room temperature, and has the characteristics of long coherence time, stable fluorescence intensity and high luminous intensity. It is one of the qubit carriers with research value and prospect. A large number of research institutions have conducted experimental studies around NV color centers, and a lot of research results have been achieved in confocal scanning imaging of NV color centers, spectral research of NV color centers at low temperature and room temperature, spin manipulation by microwave and optical methods, and successful applications have been achieved in high-precision magnetic field measurement, biological imaging, and quantum detection.

For example, diamond detectors are not afraid of extremely harsh radiation environments and environmental stray light, without adding filters, and can work normally at room temperature and higher temperatures, without the need for additional cooling systems like silicon detectors.