Fourteen years ago, an old man blocked the United States with one stone for seven years, and after the breakthrough of the United States, he took out another piece, and he once said: "If you want to become a useful person for the country in the cause of science, you must first be ready to dedicate your life to the cause of science in the motherland." ”
In September 1983, in San Francisco, USA, when Chen Chuangtian introduced himself from China to high-tech material experts from various countries in the audience, he only got few applause from the audience.
Just a few minutes after Chen Chuangsheng spoke, these scientists couldn't sit still, this is the first time that Chen Chuangsheng has reported the nonlinear optical properties of BBO crystals to foreign counterparts, which has attracted widespread international attention.
On February 18, 1937, Chen Chuangsheng was born in a peasant family in Zhejiang.
Chen Chuangsheng, who had excellent academic Xi, entered the Xi of Peking University and became a student of Huang Kun, Chu Shenglin, and other pioneers in the Chinese physics field.
In 1962, under the recommendation of his teachers, Chen Chuangsheng entered the East China Institute of Structure of Matter in Fuzhou, Chinese Academy of Sciences with his excellent grades, and began a three-year Xi study under the guidance of Lu Jiaxi.
Under the leadership of Lu Jiaxi, Chen Chuangsheng has an in-depth understanding of the structure of matter, and he also taught himself structural chemistry and quantum chemistry.
Later, with the support of Lu Jiaxi, Chen Chuangsheng also determined his future direction, that is, the relationship between the structure and properties of nonlinear optical materials, which also opened the way for his research in crystals.
China's research in this direction is far behind the world, and it is a very unpopular field in China, with a wide range of applications of nonlinear optical materials, such as laser frequency conversion, image magnification, optical information processing, optical storage, optical fiber communication, underwater communication, laser countermeasure and nuclear fusion.
Different from the research in other scientific fields, the study of the structure of nonlinear optical materials requires not only a solid knowledge foundation, but also a great deal of patience, after all, it is necessary to find the most suitable one or several among hundreds of millions of materials.
It is conceivable how boring this research is, and in the process of research, it is very likely that when you are about to succeed, you will suddenly fail, and the gap in mood before and after is not something that ordinary people can bear.
For these, Chen Chuangtian is also fully prepared, from the moment he stepped into the crystal field, he locked himself in the laboratory, doing research day and night, and experienced countless failures in the middle, but Chen Chuangtian only learned from the failure, and the more frustrated he became, the more courageous he became.
Finally, in 1968, Chen Chuangtian and his team reached the theory of anionic groups, which was a new discovery in their research and brought great motivation to the team.
After more than 10 years of hard work, Chen Chuangtian and his colleagues finally developed the BBO crystal, and in 1983, when Chen Chuangtian put his research results on the world, scientists in other related fields in the world were not optimistic about Chen Chuangtian.
At that time, there was still a gap between China's scientific and technological level and other countries, but when Chen Chuangtian showed the world the results of himself and his colleagues, in just ten minutes, the attitude of these "self-serving" scientists underwent earth-shaking changes.
Chen Chuangtian also broke the monopoly of the United States on our national crystals with BBO crystals, and other countries found that BBO crystals were better than APD crystals researched by the United States, and they were also competing to buy them.
After causing a sensation, Chen Chuangtian disappeared from everyone's sight at one time, continued to devote himself to research, and waited for him to appear in front of everyone again six years later, bringing a work that shocked the world - KBBF crystal.
At that time, the Americans always insisted that the wavelength of the laser could not be less than 200 nanometers, and Chen Chuangtian's KBBF crystal undoubtedly made the United States a joke, because the shortest laser wavelength of the KBBF crystal was 184.7 nanometers.
It is this "small stone" that makes China completely in the leading position in the field of crystals, and at the same time, the advent of KBBF crystals has also opened a new era - the era of deep ultraviolet.
All of a sudden, KBBF crystals were coaxed by other countries, and it was hard to find gold, and the key was that only China could manufacture this thing.
At this time, the United States also wanted to buy a large number of KBBF crystals, in order to make high-kill weapons, we are a peace-loving country, after knowing the idea of the United States, in 2009, began to ban the sale of KBBF crystals: "do not sell!", so that the United States plan "stillborn".
This sudden technological blockade made some people in the United States panic, and for this reason, they also published an article in the journal "Nature", which was titled "China Hides This Crystal", which criticized the mainland's technological blockade internationally.
The mainland had no intention of paying attention to these, and the United States did not give up, but found Chen Chuangtian, hoping that he could go to the United States to develop, but what Chen Chuangtian got was two words categorically: "Don't go." ”
The United States, which had no choice, had no choice but to return home, and then began to study the synthesis research technology of KBBF crystals by itself, and after 7 years of hard work, finally synthesized KBBF crystals by itself.
But just when they were excited, Chen Chuangtian led his team to discover LSBO crystals with better performance.
In October 2018, Academician Chen Chuangtian, who has been contributing to the field of new materials, passed away due to illness at the age of 81, and before his death, he used all his savings of 1 million yuan to fund neuroscience research.
Half a century of research, even if there are many difficulties, but Academician Chen Chuangtian has never given up, and he has done research with all his might, let us pay tribute to Chen Chuangtian, a scientist who has done his best for the development of national science and technology.
(Source: Records & Transmission)