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Semiconductor lasers have the advantages of small size, light weight, long life, high operational reliability, low energy consumption, high electro-optical conversion efficiency, ease of mass production, low price, and so on, in CD laser disc players, optical fiber communications, optical memory, lasers Printers have been widely used, covering the entire field of optoelectronics.
With the continuous development and breakthrough of technology, semiconductor lasers are developing in the direction of shorter emission wavelengths, higher transmission power, ultra-small size, and long lifespan to meet the needs of various applications, and the types of products are becoming increasingly abundant. In laser processing, 3D printing, laser radar, laser ranging, military, medical and life sciences have also been a lot of applications. In addition, high-power direct semiconductor lasers have been widely used in the field of cutting and welding by coupling into optical fibers for transmission.
At present, the global semiconductor laser market is relatively large, increasing from US$3.54 billion in 2012 to US$5.31 billion in 2017, with a compound annual growth rate of 8.4%.