It will further the development of a high purity

laser pointer is in the key ring shape.
In recent years, the development of organic optical fiber, the cost of glass optical fiber 2/3. However, its relatively high optical loss can only be used at close range transmission of information. We know that the integration of semiconductor devices of the 1960s into the 1970s, its level of integration to double every year or two speed jumps forward. Now, on the in 1cm2 tiny silicon can accommodate up to one million elements. So, why the integration of semiconductor devices such amazing development.In addition to process improvement, in essence, is due to the material progress. For example, the semiconductor material from germanium to silicon is a very important step forward. The length of this kind of laser pointer is 5.5cm.The higher the power of laser pointer is, the brighter the laser emitted by the laser pointer will be
Silicon rich in natural resources, good stability, easy made of the insulating film, so it is suitable for the requirements of integrated circuits, until today, is still the most important semiconductor material. It will further the development of a high purity, low defect, large diameter and texture of uniform direction. However, using silicon as substrate integrated circuits, integration and speed will soon reach the limit, so people are actively developing compound semiconductor materials, gallium arsenide is one of them. Made of gallium arsenide integrated circuits with silicon material, its integration is 150 times higher. The specification of laser pointer contains the following items.
It may be first to use ultra-high-speed computing giant computer. In addition, the compound semiconductor also has the special properties of silicon, germanium and other semiconductor materials that are not. Therefore, it is the most promising semiconductor materials. Human use of the information process, information storage is the essential part. People require a huge amount to deposit information and urgent desire to quickly extract information from the original of Jieshengjishi developed into a modern information storage, which are reflected. In recent years, information storage technology has maintained a good momentum of high-speed development. Take the disk, 10 years later, the recording density is about to improve a 20-fold. The emergence of a continuous coating. On the contrary, the wavelength of green ray laser pointer is about 530 nm. 
China in the above three types of materials, production and R & D, compared with foreign advanced level, with a considerable distance, only a few units in the development, production and sales in this field. R & D in basic scattered, chaotic, small, low-level state, and foreign manufacturers can not market competition.