Yorkshire water, the UK water company, and its partners have been awarded a £1.2 million government grant to kick-start research and development of UK underwater fibre optics.
Laser is considered to be one of the greatest inventions of mankind in the twentieth century, and its appearance has strongly promoted the progress of detection, communication, processing, display and other fields. Semiconductor lasers are a class of lasers that mature earlier and progress faster. They have the characteristics of small size, high efficiency, low cost, and long life, so they are widely used. In the early years, infrared lasers based on GaAsInP systems laid the cornerstone of the information revolution.
Recently, Zhang Weijun, a researcher at Anhui Institute of Optics and Fine Mechanics, Hefei Institute of Physical Science, Chinese Academy of Sciences, has made progress in atmospheric nitrogen dioxide (NO2) detection technology. A new method for rapid and sensitive detection of NO2" was published in the American Chemical Society "Analytical Chemistry".
Recently, with the support of the National Natural Science Foundation of China, Shenzhen Basic Research and other projects, Assistant Professor Jin Limin, a member of Harbin Institute of Technology (Shenzhen) Micro-nano Optoelectronics team, cooperated with Professor Wang Feng and Professor Zhu Shide of City University of Hong Kong, and published a research paper in the internationally renowned journal Nature-Communications. Harbin Institute of Technology (Shenzhen) is the communication unit.
An international consortium led by the UK's National Physical Laboratory has set a new record for comparing ultra-stable lasers at long distances by metering a fibre network. A related research paper was published in the journal Nature Communications.
Semiconductor saturable absorber mirror (SESAM) is the core device for mode-locking to generate ultrashort pulses, especially picosecond pulses. This is a nonlinear light absorption structure that combines a mirror structure and a saturable absorber. Relatively weak pulses can be suppressed, and the pulses can be attenuated in a way that reduces their duration. At present, with the development of microfabrication industry at home and abroad, the demand for ultrashort pulses, especially picosecond pulsed lasers, is increasing, and the demand for SESAM is also increasing.
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