fiber laser waveguide structure

At present the study of fiber lasers and amplifiers and optical communication from the majority of laboratories and research institutions, because they are unique aspects of the fiber preparation, but in fact in other areas of application of fiber lasers and amplifiers are also visible, such as spectral , nonlinear optics, metrology, holographic science, sensors and medical fields, and even skiing in the printing process. We will see, throughout the international scientific community involved in fiber laser technology will be more and more. Research into the use of rare earth elements doped amplifier technology has brought to light a revolutionary change. As any optical amplifier can be formed through appropriate feedback control mechanism, so the fiber laser can be developed on the basis of the amplifier. Currently developed by REE-doped fiber laser primarily as a gain medium. Because the core is very thin fiber lasers, the pump light easily within the formation under the effect of high power density, resulting in work material level "inversion." Therefore, when a positive-feedback loop properly (form resonant cavity) oscillation can be formed. In addition, as the fluorescent substrate has a very wide spectrum, therefore, generally can be made of fiber laser tunable, very suitable for WDM system applications. The laser pointer store has gained a lot of purchase orders of laser pointer this month.
And semiconductor device compared to the advantages of fiber lasers is mainly reflected in: fiber laser waveguide structure, can accommodate strong pump, with a high gain, high conversion efficiency, low threshold, the output beam quality, line width, a simple structure and high reliability features, easy to implement and the coupling. We can see from a different perspective on the classification of fiber lasers, such as the fiber laser resonator structure can be used in Fabry-Perot cavity and into the ring cavity into two categories. Output wavelength can also be divided into the number of single-wavelength and multi-wavelength and so on. For the characteristics of different types of fiber lasers should consider the following main points: the threshold should be as low as possible; output power and pump power is better than linear; output polarization state; model structure; energy conversion efficiency; device operating wavelength and so on. The laser pointer store is trying to get more purchase order of laser pointer .