Today's Most Important Light Source Green Laser Pointer
Semiconductor lasers are the most important green laser pointer light source today. It has high output power. Electro-optical conversion efficiency is high. However, ordinary semiconductor lasers have a large beam divergence angle, low convergence ability, and poor beam quality. In use, it is necessary to cooperate with a specific shaping light path. This makes the system complicated and restricts its wide application. Researcher Zheng Wanhua and his research team from the Institute of Semiconductors of the Chinese Academy of Sciences have long pioneered in the field of semiconductor lasers. After more than 20 years of academic accumulation, they have successfully introduced photonic crystal structures into epitaxial materials and devices, achieving the combination of electronic energy bands and photon mode fields. Regulating and controlling, while maintaining the high-efficiency output of the laser, the direction and mode of the laser output beam are greatly improved. Can be applied without complex shaping. Simplify the green laser pointer system. Related achievements won the second prize of the 2017 National Technology Invention Award.
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Beginning of laser research. From the very beginning, I decided to engage in green laser pointer research. Has been working in the field of semiconductor lasers for 27 years. In 1988, she graduated from the Department of Optics of Shandong University with the first place. She was admitted to the academic field of academician Xu Zuyan, a well-known expert in the field of laser. In 1994, she went to Hong Kong to continue her studies. During her research under the guidance of Academician Xia Jianbai, she completed the research on the control of multi-wavelength luminescence in the band of micro-nano structures, laying a solid foundation for her subsequent research. The artificial microstructure has a good regulation effect on the luminescence of the material. Zheng Wanhua said. Her team's research is to combine this performance with semiconductor lasers. Then break through the technical bottleneck of the existing semiconductor green laser pointer performance improvement.
If you want to buy a cheaper laser pointer, you should choose green because it is more conspicuous and brighter. When you are ready to buy, you should be very clear about your purpose. Then you can make wise choices in terms of power and color. If you are just using it in lectures or classrooms, the 50MW active laser is your best choice. The lower the laser power, the cheaper the price. If you want to buy a cheaper laser pointer, you should choose green because it is more conspicuous and brighter. When you are ready to buy, you should be very clear about your purpose. Then you can make wise choices in terms of power and color.
2020-01-17 03:10:42
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