Technology Development Of Green Laser Pointer

By Author: janney
Total Articles: 32
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The technology development of green laser pointer is needed for the green laser pointer company. Early development of the laser focus on research output and short pulse tunable wavelength range of extensions. Today, dense wavelength division multiplexing (DWDM) and optical time division multiplexing technology, the rapid development and accelerate progress and stimulate the growing multi-wavelength fiber laser technology, fiber lasers and other supercontinuum progress. Meanwhile, the multi-wavelength fiber lasers and supercontinuum fiber lasers appear, for the cost to achieve Tb / s of DWDM or OTDM transmission provides the ideal solution. The technical means to achieve its view, the use of EDFA amplified spontaneous emission, femtosecond pulse technology, ultra-light-emitting diode technology are reported. Fiber laser at home and abroad for research and hotspots are mainly concentrated in high-power fiber lasers, high-power photonic crystal fiber lasers, tunable narrow linewidth fiber laser, multi-wavelength fiber lasers, nonlinear optical effects and ultrashort pulse fiber laser lasers and other aspects. The technology development ...
... of green laser pointer is very important to enhance the product quality of green laser pointer.

In 1962 the world's first since the advent of a GaAs semiconductor laser, more than 40 years of history, is now widely used in semiconductor lasers laser communication, optical storage, laser detection and other fields. With the continuous output power of semiconductor lasers increasing, expanding its scope of application, including high-power diode-pumped solid-state laser (DPSSL) is one of its largest applications. This technology combines semiconductor lasers and the advantages of solid-state lasers, semiconductor lasers not only for the solid-state laser wavelength conversion wavelength, but with improved beam quality and spectral width of compression, and the realization of the pulse output. Semiconductor lasers small size, light weight, direct electron injection with high quantum efficiency, can be controlled by adjusting the temperature of components and get a different wavelength and the absorption wavelength solid-state laser materials to match, but it is their poor beam quality, and asymmetry in both directions, horizontal model is also less than ideal. The solid-state laser output beam of high quality, with high temporal and spatial coherence, spectral width and beam divergence angle of a few orders of magnitude smaller than the semiconductor laser. For DPSSL, is to absorb high-energy photon wave length, into longer-wavelength low-energy photons, so there is always a part of a non-radiative transition of the energy converted to heat. How will this part of the heat energy from the massive dissemination of the laser medium, excluding a diode-pumped solid-state laser of key technologies. For this reason, people began to explore methods of increasing the cooling area. The technology development program of 200mW Laser Pointer has been improved.

One way is to make thin laser fiber shape of media. The so-called fiber lasers is to use fiber lasers for laser media, 1964 is the world's first generation of laser glass fiber laser. As the fiber core is very small, general pump source (such as gas discharge lamp) is difficult to focus on the core department. So after twenty years in the fiber lasers are not well developed. With the development of diode-pumped technology, and optical fiber communications needs of the booming, University of Southampton in 1987 and the U.S. Bell Labs experiments demonstrated erbium-doped fiber amplifier (EDFA) is feasible. It uses a semiconductor laser optically pumped erbium-doped single-mode fiber optical signal to achieve amplification, and now this EDFA in optical fiber communication has become indispensable devices. As to the semiconductor laser-pumped single-mode fiber into the core (diameter generally less than 10um), must also be required for the single-mode semiconductor laser, which makes it difficult to achieve high power single mode EDFA, the highest reported power just a few hundred mW. In order to improve power, around 1988, it was suggested by the optical pumping into the cladding. Initial design is the circular inner cladding, but the circular inner cladding perfect symmetry, making the pump absorption efficiency is not high, until the early nineties the emergence of a rectangular inner cladding, the laser conversion efficiency to 50%, output power of 5 watts. The technology development of 100mW laser pointer  has achieved a very good result.

1999, with four 45-watt diode laser pumped from both ends to obtain a continuous 110-watt single-mode laser output. The past two years, with the high-power diode-pumped double-clad fiber technology and production process development, fiber laser output power gradually increased, the current single-fiber, has achieved a 1000-watt laser output. Recently, optical fiber communication systems with extensive application and development of ultra-fast opto-electronics, nonlinear optics, optical sensing applications in various fields of research has been increasing attention. Among them, the matrix of the fiber laser for fiber in reducing the threshold, long-range oscillation wavelength tunable performance, etc., has been a marked progress, is the emerging field of optical communications technology, it can be used in existing communications systems, so that support higher transmission speeds, the future high bit rate DWDM systems and the basis for future coherent optical communications. Fiber laser technology is currently a hot research technologies. Fiber lasers due to their absolute ideal beam quality, high conversion efficiency, completely maintenance-free, high stability and small size, etc., the traditional laser industry have a tremendous and positive impact. The latest market survey: fiber laser suppliers will compete for solid-state lasers and other lasers in several key application areas of the market, and these market share steadily over the next few years will call. By 2010, the fiber laser will be occupied by at least $ 2.8 billion industrial laser market share of a quarter. The technology innovation of green laser pointer will be applied in the workshop.

Fiber laser sales will be more 35% annual growth rate of rise, from $ 140 million in 2005 to $ 680 million in 2010. The same period, industrial laser market increased by only 9% per year, $ 2.8 billion in 2010. Nankai University in 2002, reported the Yb3 +-doped double-clad fiber devices to get the pulse width 4. 8ns of the self-Q-Q-switched pulse output and mixed double-clad fiber laser to get peak power greater than 8kW, pulse width less than 2ns pulse output. Nankai University in 2003 reported the use of pulse peak power of 100kW pump to obtain Q-switched, and get the 60nm tunable Q-switched. November 20, 2003 reported that the Shanghai scientists have made new achievements in the laser field, the successful development of up to 107W output power fiber lasers. This laser is called "high-power ytterbium-doped double-clad fiber laser," compared with the currently available laser and its maintenance costs much lower power consumption, life is ordinary laser a few times. The technology development of 5mW laser pointer should be described in the report submitted to the manager of the company of Blue Laser Pointer .