Green laser pointer technology is a comprehensive technology involving optics

Then pumped to the particle energy levels in the absence of light excitation signal in the case, part of the energy levels will decline in the absence of the case of excitation signal light, and change back to the ground state, and change back to the ground state, the formation of spontaneous emission, green laser pointer technology is a comprehensive technology involving optics, mechanism and electron. the formation of spontaneous radiation by spontaneous emission fluorescence formed after the formation of narrow-band tunable narrow-band optical filter, then through the feedback signal into the erbium-doped fiber as light, after the formation of narrow-band optical filter, then through the feedback into the erbium-doped fiber as the signal light, and energy state will cause the stimulated emission and stimulated absorption, when they meet the population inversion and stimulated radiation energy state by stimulated emission of radiation and stimulated absorption of radiation is greater than the stimulated absorption, the signal light will be amplified through the gain medium - radio erbium-doped fiber is greater than the stimulated absorption, the signal light will be amplified through the gain medium - doped doped fiber in - zoom back and forth communication will form the laser. The largest traditional application field is the     green laser pointer      processing technology.The higher the degree of inversion, the stronger its ability to zoom in, zoom back and forth communication will form the laser. The higher the degree of inversion, the amplification is stronger, the more laser power output high, the higher the laser power output, by adjusting the feedback wavelength tunable filter can be realized in different wavelengths of laser output length of the laser output. Second, the application of tunable fiber lasers and development of tunable lasers has been widely used in optical fiber networks and systems, tunable lasers have been widely used in optical fiber networks and systems, especially all-fiber tunable lasers have become high-speed large-capacity optical communication systems the key devices in high-speed tunable laser has become the largest high-speed large-capacity optical communication system in the key devices. capacity optical communication systems, the capacity of optical communication systems, due to fiber dispersion and environmental impact of temperature drift of the device, due to fiber dispersion and environmental impact of temperature drift of the device, may require the use of narrow linewidth tunable laser as a carrier. What follows is the   usa green laser pointer      processing system.tunable optical fiber laser is also seeking to promote the use of narrow linewidth tunable laser as a carrier of network development, the use of tunable fiber lasers can improve the long-haul and metro network capacity and efficiency of development, rate, extended optical network flexibility, improve functionality and simplify optical network optical network, optical network to expand optical network flexibility, improve the optical network functionality and simplifies optical networks, network services quickly upgraded to improve quality, reduce network construction costs quickly escalated, improve network service quality, reduce network construction costs. tunable fiber lasers can be used for atmospheric monitoring, optical sensing, measurement, optical data tunable fiber lasers can also be used for atmospheric monitoring, optical sensing, measurement, storage, instrumentation and medical and other fields. What follows is the     green laser pointer      processing technique.High output power and a precise wavelength tunable optical storage, instrumentation and medical fields. fiber lasers have been used for time-division multiplexing FBG sensor system, a large signal to noise ratio can be precise fiber lasers have been used in time-division multiplexing FBG sensor system, the measurement of the wavelength of fiber Bragg grating displacement sensor In addition, fiber lasers in communications, military, and measuring the wavelength of fiber Bragg grating displacement sensor.