Special Requirements For The Light Source Green Laser Pointer
Human beings should further explore the green world of the laser pointer. Especially in many disciplines such as materials, environment and biology. Some basic scientific research projects have started to have higher and more special requirements for light sources in the process. Professor Huaidong Jiang, professor of the School of Material Science and overall director of the FEL-I point of the beam line station of the hard X-ray free electron laser device project, compared with the third-generation synchrotron radiation source, X-ray free electron lasers have higher brightness and shorter pulse And three significant advantages of better coherence. For example, the peak brightness of the X-ray free electron laser is 8 to 10 orders of magnitude higher than that of the third-generation synchrotron radiation source. Green laser pointers have a pulse frequency that is 3 to 4 orders of magnitude shorter. Can be as narrow as femtosecond or even sub-femtosecond.
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Construction of a hard X-ray free electron green laser pointer device. It will provide cutting-edge research methods such as high-resolution imaging, ultra-fast process exploration, and advanced structure analysis for multiple disciplines. Zhu Zhiyuan, Secretary of the Party Committee of Shanghai University of Science and Technology and General Manager of the Hard X-Ray Free Electron Laser Device Project, gave an example of experimental detection capabilities: an experiment was conducted around the spectral energy resolution of 1 MeV (megaelectron volts). It takes 200 days, while using a hard X-ray free electron laser device takes only 3 hours. Zhao Zhentang, director of the Shanghai Institute of Applied Physics, Chinese Academy of Sciences, chief scientist of the hard X-ray free electron laser device project, and distinguished professor of the School of Material Science at Shanghai University of Science and Technology, said that the device has a wide range of applications. For example, in the field of chemistry, use this research tool. Scientists can observe and grasp the process of chemical bond breaking through green laser pointers experiments.
You don't need to hold down the button to keep the laser working. This means you can turn it on and use a closer beam, or move to another area where the laser remains active. For users, this is a good choice and a typical choice. You will notice that almost all high-power combustion lasers use rear cover button switches. At least 200 MW is a good starting point for shooting trees or shooting ranges. But the greater the intensity, the better the effect during the day. It is also a wise choice to use a laser that can widen or thin the beam for focus adjustment. By making the beam thinner or more concentrated, the intensity of the beam can be increased. This will make it more visible during the day.
2020-01-02 03:16:34
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