The hottest US Army plans to develop Raman ultravi

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The U.S. military plans to develop Raman ultraviolet lasers for biochemical detection

the U.S. military's biological joint standoff detection system (JBSDS). JBSDS is an application example of chemical and biological threat monitoring outside the defense area, which uses laser radar (LIDAR) to detect aerosols at a certain distance. DARPA hopes to develop a compact high-power UV laser through the luster project to achieve similar functions

according to China's national defense science and technology information, the Defense Advanced Research Projects Agency (DARPA) has launched a new research aimed at developing a compact and reliable UV detection device

the research project is called "tactically effective Raman ultraviolet laser source" (luster). DARPA seeks design solutions from the industry to develop a new deep UV laser biochemical warfare agent detection technology with compact structure, high efficiency, low cost and flexible deployment. This new technology can save space, reduce weight and power requirements, and is much more sensitive than current similar devices. DARPA's goal is: at present, China has become the country with the widest coverage of high-tech fiber (including Bio based chemical fiber) production varieties. The volume of the new UV laser is not more than 1/300 of the current laser, and the efficiency is increased by 10 times

Raman spectrum analysis is a method to measure molecular vibration by using light after excitation and deceleration system, so as to quickly and accurately identify unknown substances. The wavelength of UV laser is particularly suitable for Raman analysis, but the tactical UV detection system currently used by the U.S. Department of defense is bulky, expensive, and its performance is limited

Dangreen, the project manager of DARPA, said that the current detection system is too large in size and weight, and needs to be transported by truck. The goal of the luster project is to develop a breakthrough chemical and biological warfare agent detection system, which can be carried by individual soldiers, and the efficiency is greatly improved. At the same time, DARPA hopes that the price of the new system can "erase a few zeros" from the current detection system price

at present, the "compact medium ultraviolet technology" (cmuvt) project has been completed, and DARPA hopes to develop lus3 on this basis The adjustment of lifting guide wheel is not correct ter. The cmuvt project has developed a record high-efficiency and high-power medium ultraviolet light-emitting diode, with an ultraviolet wavelength close to that of luster. However, the sensitivity of light-emitting diodes to compound recognition is limited, so DARPA hopes that the luster project can develop new laser technology, so that its accuracy and sensitivity are not lower than the current expensive laser system, and its stability and cost are equivalent to that of light-emitting diodes

green revealed that in addition to detecting chemical and biological warfare agents that may appear in the battlefield or domestic large-scale terrorist attacks, UV lasers have many other uses, such as medical diagnosis, advanced manufacturing and compact atomic clocks

luster project can consider adopting a variety of different technical methods, as long as they can emit nano wavelength deep ultraviolet light, their power output is greater than 1 watt, power conversion efficiency is greater than 10%, and the wire width is less than 0.01 nm

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