A:The laser beam directly output by the semiconductor laser light-emitting unit is an elliptical asymmetric Gaussian beam, which has a large divergence angle and extremely uneven spot. In some application fields, it must be shaped and spot uniformized. There are two commonly used shaping methods: optical lens shaping and fiber coupling shaping. Simple optical lens shaping can compress the beam into a rectangle, but the spot uniformity is poor and it is not flexible to use. Through fiber coupling, the optical spot output by the fiber is a circular symmetrical spot with good uniformity, and the beam quality is improved. At the same time, fiber coupling is an important means to achieve flexible laser transmission, which greatly enhances the flexibility and operability of semiconductor lasers. It is more flexible and convenient to use in medical, processing and other fields. Box Optronics focuses on fiber coupling and mainly provides fiber coupled semiconductor lasers.
This article mainly describes the characteristics and concepts of FP lasers and DFB lasers
Laser-a device capable of emitting laser light. The first microwave quantum amplifier was made in 1954, and a highly coherent microwave beam was obtained. In 1958, A.L. Xiaoluo and C.H. Towns extended the principle of microwave quantum amplifier to the optical frequency range. In 1960, T.H. Mayman and others made the first ruby laser. In 1961, A. Jia Wen and others made a helium-neon laser. In 1962, R.N. Hall and others created a gallium arsenide semiconductor laser. In the future, there will be more and more types of lasers. According to the working medium, lasers can be divided into four categories: gas lasers, solid lasers, semiconductor lasers and dye lasers. Free electron lasers have also been developed recently. High-power lasers are usually pulsed output.
The 980nm 14pin butterfly pump laser produced by Box Optronics uses a TEC cooler and a 980nm Pump laser chip with high performance.
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