China has also made significant progress in the industrialization of high precision optical waveplate , and established some production lines. Some crystal varieties have been commercialized, such as KTP, LBO, BBO, LN, LT, etc., in addition to meeting domestic demand, Also a large number of exports.
However, there is still a big gap between the industrialization process of China's nonlinear crystals and the needs of technological development. It has not yet met the requirements of the development of traditional industries and high-tech fields in both quality and quantity; the overall level of research (application) development is especially There is still a considerable gap between the level of industrialization and foreign countries, and it has not yet formed a set of industrial systems in the true sense of organic connection. Specifically in:
1) The production equipment is backward, the control level is low, the single machine output is low, the yield is low, and the product quality is unstable;
2) Industry dispersion and small scale (some varieties such as LiNbO3, although the total output is large, but not strong, the product grade is low, the optical grade high-quality laser grade optical waveplate, mostly piezoelectric);
3) The variety is small, the specifications are not complete, and the gap between components and developed countries is greater, which is related to the level difference of crystal deep processing such as polishing, coating and precision processing of components;
4) The level of industrialization and engineering is low. On the one hand, some optical waveplate manufacturer with excellent performance are still in the laboratory research stage, which cannot meet the needs of high-tech development. On the other hand, the laboratory results are transformed into the industrialization level of productivity. Extremely need to improve;