the advent of high-power lasers

Processing technology, the rapid in vivo three-dimensional sculpture market in the domestic and international glass to dominate. They perform their teaching, reporting, lecturing or presentation by using laser pointer .
The laser has very broad applications in many fields of modern industry. Understanding of laser applications in important areas, grasp the development trend of the laser industry is particularly important for the country's economic development. A laser in today's society. The laser's invention of the laser position in today's society is a major scientific and technological achievements in the 20th century compared with atomic energy, semiconductor, computer. Since its birth until now has been developing rapidly, the laser light is another revolution in the history of artificial light. China's laser technology has developed rapidly in the initial stage, close to both quantity and quality and international standards. An innovative technology can so quickly catch up with the world advanced level, which are rare in the history of the development of modern science and technology in China.  laser pointer can totally free the teachers, lectures, reporters or business men from being restricted by the operation of the computer during the teaching, reporting, lecturing or presentation.
Physical envisaged technical solutions smoothly into the actual laser devices, mainly thanks to the Changchun Institute of Optics years in technical optics, precision machinery, comprehensive ability and a solid foundation. The development of a new technology, there is no adequate technical support is difficult to form a climate. [1]. Laser application of laser application of 2.1 Laser in Natural Science Research 2.1.1 optical phenomena in nonlinear optical response in a familiar reflection, refraction, absorption, reflection of light, refraction of light 1 is proportional to the intensity of incident light intensity, such phenomenon is known as linear optical phenomena. The teachers can remotely control the PPT they use in the class through using laser pointer .
Strength In addition to the directly proportional to the incident light intensity, and incident light intensity, quadratic, cubic and even higher side, which is a nonlinear optical effect. These effects are only large enough in the incident when the performance. After the advent of high-power lasers, laser matter interaction process observed nonlinear optical phenomena, such as frequency conversion, Raman frequency shift, the self-focusing.