Crystal materials are at the forefront of the development of new materials, are an important material foundation of the current information age, and become the backbone of the contemporary information technology industry. my country's artificial lens materials represented by nonlinear optical crystals have the international advanced level. The research and development of crystal materials has made great progress in the past two decades. With the strong support of the government, scientific and technological workers have made world-renowned achievements in basic research and applied basic research, and have successively discovered various "Chinese brand" artificial crystals. Some of these crystal materials have gone global and become internationally renowned. Chinese brand IOL high-tech products. As a research object at the forefront of scientific research, crystal material not only has its rich scientific connotation and research value, but also is a high-tech resource that needs to be developed and utilized urgently. The development path of crystalline materials is not only to further deepen its basic research, but more importantly, to raise the industrialization of crystalline materials to a new level.

As a nonlinear optical material, lithium niobate crystal has a wide range of applications. It is called a universal optoelectronic material. It is widely used for its excellent nonlinear optical effect, electro-optic effect, piezoelectric effect and photorefractive effect. Laser electro-optical Q-switching components, laser frequency doublers, optical switches, optical parametric amplifiers, high-frequency broadband filters and ultra-large-capacity storage devices, integrated optical modulator series and military, civilian fields have a wide range of uses, while lithium niobate (LN) crystals have excellent piezoelectric, electro-optic, acousto-optic, and nonlinear properties. It has a wide range of applications in the military and civilian fields. With the development of optoelectronic technology, the application of LN crystals in national defense technology has attracted more and more attention. LN crystal is also a good piezoelectric crystal, which can be used to make low- and medium-frequency SAW filters, high-power and high-temperature ultrasonic transducers.

Lithium tantalate is a new type of optoelectronic material developed and industrialized with the rapid development of communications and information industries in recent years, and it has also played a certain role in the development of my country's information industry. In 2012, the value added of my country’s electronic information manufacturing industry above designated size increased by 12.1%, 2.1% higher than the industrial average of the same period; the growth rate of revenue, profit and tax was 2.0, 0.9 and 9.9% higher than the industrial average, respectively. The leading and supporting role in the economy has become more prominent. In 2012, the sales revenue of my country's electronic information industry reached 11.0 trillion yuan, an increase of more than 15%. Among them, the manufacturing industry above designated size achieved revenue of 8461.9 billion yuan, a year-on-year increase of 13.0%; total profits were 350.6 billion yuan, a year-on-year increase of 6.2%; sales profit margin reached 4.1%, a decrease of 0.3 percentage points from the previous year.

The national "Twelfth Five-Year Plan" also clearly pointed out that during the "Twelfth Five-Year Plan" period, the average annual growth rate of sales income of my country's electronic information manufacturing industry above designated size will remain at about 10%, exceeding 10 trillion yuan in 2015; industrial added value The average annual growth rate exceeds 12%; the sales revenue of strategic emerging areas in the electronic information manufacturing industry has an average annual growth rate of 25%. Steadily promote the transformation and upgrading of processing trade, encourage processing trade enterprises to extend the industrial chain, increase the added value of products, and the proportion of general trade continues to increase. The next 5-10 years will be a period of rapid development of the electronic information industry, and lithium tantalate and lithium niobate crystals are not available for the production of piezoelectric, acousto-optic, optical, laser and other devices in the fields of IT industry information transmission, integration, modulation, and display. With the lack of materials, the future development prospects are also very broad.