At the “optoelectronic Summit Forum” of the 22nd China International Optoelectronic Expo held today, academician Jiang Huilin of the Chinese Academy of Engineering explained in detail the future development trend of optoelectronic technology from the aspects of “five new”, “five special”, “more than five”, “five chemical” and “five domains”.
“Five new” specifically refers to new materials, new processes, new devices, new mechanisms and new methods.
In terms of new materials, Jiang Huilin pointed out that with the development of light, small and high-precision optoelectronic devices and equipment, new semiconductor materials are needed to ensure their more efficient work. In 2016, the Institute of optoelectronic technology of Chinese Academy of Sciences made breakthrough progress in new type of metamaterial antenna, integration of metamaterial and natural material, acousto-optic material with negative refractive index and wave absorbing material; in 2017, the University of Southern California (USC) took the lead in launching a new semiconductor material of “transition metal perovskite chalcogenide”, which enhanced the functions of photoelectric devices and solar panels The material consumption is 100 times less than the commonly used silicon materials; in 2018, Changchun Institute of Optics and mechanics of the Chinese Academy of Sciences successfully developed the world’s largest high-precision SiC aspheric mirror with a diameter of 4.03M, marking that China’s large-diameter silicon carbide material and aspheric optical mirror technology level ranks in the forefront of the world.
In terms of new technology, in 2018, researchers from Massachusetts Institute of technology adopted a new optical fiber manufacturing process, implanting high-speed optoelectronic semiconductor devices into plant fibers, and weaving these fibers into soft and washable fabrics, which solved the problem of long-term difficulty in applying semiconductor devices to fabric manufacturing. In 2012, the “titanium alloy” project was sponsored by Wang Huaming, academician of Beijing University of Aeronautics and Astronautics The project “laser solid forming technology for large complex integral components” won the first prize of national technological invention, and became an important milestone in the history of metal 3D printing in China.
In terms of new devices, in 2016, Changchun Institute of Optics and mechanics of Chinese Academy of Sciences independently developed the CMOS image sensor with the largest photosensitive area and highest resolution in the world, with a pixel of 150 million and a size of 168mmx28mm, which greatly improved the research and development ability of China’s high-resolution and high-sensitivity CMOS image sensor; in 2018, the Institute of optoelectronic technology of Chinese Academy of Sciences invented super-resolution imaging lithography equipment, The photolithography device is fabricated, and the characteristic size pattern below 10nm can be processed under 365nm wavelength.
In terms of new mechanism, in 2014, with the help of fluorescent molecules, Nobel Laureates in the United States and Germany extended the limit of optical microscopic imaging technology to nano scale, breaking through the limitation of optical diffraction limit. The main way is to use two laser beams, one to excite fluorescence molecules and the other to cancel all fluorescence beyond the nanometer scale.
In terms of new methods, in 2013, the United States launched the “spider” micro interference optical imaging project, which used hundreds of lenses with a diameter of 1 mm to form an array. Under the same aperture conditions, the size, weight and power consumption of the traditional optical telescope were only 1 / 100-1 / 10 of the traditional optical telescope, and the resolution was increased by more than 10 times. In 2010, Changchun Institute of Optics and mechanics of the Chinese Academy of Sciences proposed a geometric resolution method for sub-pixel CCD, which can improve the theoretical resolution Twice as high.
The “five special” are special small, extra large, special fine, super fast and super high.
In the very small aspect, the micro optical structure nano sensor developed by Australia and the “ant colony” micro robot developed by Harbin Institute of technology are taken as examples; in the extra large aspect, the telescope, which is 39 meters in diameter and is expected to be completed and put into use in 2023, is jointly built by 14 European Southern Observatory member countries and Brazil; in the special aspect, Changchun Science and Technology Co., Ltd The ground simulation system for star sensor has been developed by the University of technology, with the highest accuracy of 0.2 angular second. In terms of ultra fast, the Institute of physics of the Chinese Academy of Sciences uses attosecond camera to measure the photoelectron spectrum scanning fringes generated by infrared driven laser and high-order harmonics, and concludes that the single attosecond pulse width is 160as, indicating that domestic research has entered the attosecond world; in the ultra-high aspect, in April 2020, China’s practice reached 20 The first set of high-speed and high-order coherent laser communication terminal carried by No.1 satellite has successfully completed the first phase test mission on orbit, and the communication rate with the ground has reached 10 Gbps, which is the highest rate of satellite laser communication in China.
In addition, Jiang Huilin introduced that the “five areas” refer to multi frontier, multi-dimensional, multi spectral, multi-functional and multi-disciplinary; “five modernizations” refers to informatization, networking, automation, digitization and intellectualization; and “five domains” refers to space exploration, ocean exploration, photoelectric display, medical health and smart city.
“General Secretary Xi Jinping pointed out that we should grasp the opportunity of integration development of digitalization, networking and intelligence, and leverage information and intelligence as a lever to cultivate new kinetic energy.” Jiang Huilin said: “informatization has become the mainstream of the world’s development. Our scientific and technological workers will continue to work hard to climb the summit, strive to promote the development of optoelectronic technology, and contribute to the informatization, intellectualization and human social progress.”
Editor in charge: PJ