laser pointer can meet various needs and requirements of different customer

laser pointer  can meet various needs and requirements of different customer. 
The basis of theoretical models, select the appropriate laser lasers frequency doubling materials, the choice of crystal cut size to make the overall design. To select the optical crystal, and to determine the size and species. Phenomena through observation and validation experiments, design of control systems, improve the deficiencies in the design, to complete the paper. Optical frequency conversion technology, the theoretical model. The octave of the octave principle of light is one of the most common extended-band nonlinear optical methods. Frequency doubling of laser light of frequency ω, the nonlinear interaction in the crystal, resulting in the light of frequency 2ω. Laser applications can take advantage of the nonlinear optical effect to frequency conversion to a specific laser wavelength, frequency doubling technology is an important and effective means of a frequency converter. So that the customer can use  laser pointer much more easily and conveniently.
laser pointer  cab be adopted to point at the star they want to observe
This is a common and important second-order nonlinear optical effect. Usually the birefringence of the crystal itself to achieve phase matching. When the phase matching conditions are met, the second harmonic power density is proportional to the frequency of the secondary side of the optical power density is also proportional to the square of the length of the crystal effect. In addition, the medium of the multiplication factor (second-order nonlinear susceptibility) is proportional to the quadratic. There are many kinds of frequency-doubling crystal, and can reach very high harmonic conversion efficiency. Visible and near infrared of the base frequency of light, the frequency-doubling crystal KDP, KDPADP, LiID, CDA, etc., can be as high as 30% ~ 50% conversion efficiency. For the infrared-based frequency of light, commonly used crystal AgAsS, GdGeAs, Te, CdSe, the conversion efficiency of about 5% to 15%.
Laser welding machine market sales reached 86.557 million yuan, an increase of 19.9 percent in 2001, laser rapid prototyping machine market sales reached 47.5 million yuan, an increase of 90.2% over 2001. In addition, the fine-tuning machines, dicing machine market sales growth to varying degrees. Laser heat treatment machine market sales decline in 2002 was reduced to 11.48 million yuan, down 84.4 percent from 73.7 million yuan in 2001, to reduce as much as 62.22 million yuan. Domestic enterprises and the development of industrial laser equipment production profile since the 1990s, with the rapid development of market economy, the domestic company engaged in the development, production and operation of lasers and laser processing equipment.Cutting polypropylene plastics to use compressed air, cotton, paper, flammable materials, cutting the use of inert vapor.