Some countries have the limitation of owing green laser pointer

There is some requirement about using green laser pointer . Fiber laser as a light source in the field of optical communication has been widely used, and as the dual-protection layer of high-power fiber lasers appear, its application is toward the laser processing, laser ranging, laser radar, laser art of imaging, security and bio-medical laser rapid expansion of a wider area. The following article outlines the principles of fiber lasers, characteristics, applications and prospects for development. Fiber laser and amplifier research and application has attracted wide attention and interest, have been able to prepare the silicon and lead fluoride doped with rare earth elements for the matrix fiber. Produced using these light sources or optical fiber amplifier to reduce the cost of optical communication systems has great potential. Ion of the hinge and then bait wavelength fiber lasers have a variety of output, including 900nm, 1060nm and 1550nm and so on. With the output wavelength of 800nm as the pump source of I'D can also get an important window of optical communication wavelength (1550nm) output. Some countries have the limitation of owing green laser pointer .
Promise by changing the laser output of rare earth ions in which the glass substrate to make changes. By the rare earth ion-doped fluoride fiber fault can be generated in the infrared wavelength of 1050nm, 1350nm, l 380nm and l 550nm laser output, which 1350nm wavelength is very valuable, because the use of silicon as a substrate in order to get the wavelength of the fiber The output is very difficult. In addition, this fiber can 2.08ftm, 2.3f4m and 2.7Pm mid-infrared wavelength region produce laser output is also of great value. This light source may be in communication, medicine, communications and spectroscopy in the atmosphere has been applied. Fiber laser output can be continuous, it can be pulse. Fiber laser mode locking and Q-and sub-nanosecond pulses has been obtained. Fiber laser fluorescence spectra in the range of its regulated output. The most important thing is to get a narrow bandwidth, single-longitudinal-mode output. It can also be used for monochromatic coherent communications and other demanding applications. The superior performance of optical fiber amplifiers and the use of LD as a pump source to achieve the amplification to the optical communication system more widely. The limitation of owning green laser pointer is included in the guide book.
In the past few years, fiber lasers and amplifiers has been rapid development, many of the world are involved in laboratory research in this area. These studies involved all aspects mentioned below. Later will use visible and infrared wavelength regions of the rare earth transition, to find more spectrum to meet different needs. Optical fiber in the process of theoretical and basic research will be further developed to optimize its performance. Requires further experimental study and meet the actual needs of the device. Resonant cavity of the new fiber and research will continue. High power and narrow pulse polarization control, application of a tunable linewidth output are needed. Compatible with optical modulators and isolators is now urgently needed. Fiber laser will undoubtedly stimulate the development of optical devices. Fiber amplifier in the local area and wide area optical communication systems application prospect, which requires further study. The company wants to draw more potential buyers of green laser pointer .
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 green laser pointer store has gained a lot of purchase orders of led flash light 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 green laser pointer store is trying to get more purchase order of green laser pointer .