Turn-button laser, will further enhance the reliability and stability, using this design can increase the second harmonic conversion efficiency, and the use of new materials (such as LBO) for more wavelengths. Pulse solid Nd: YAG laser using three and four harmonic technology, will expand its application areas, and can be used as dye laser pump source. Addition of Ti, Tm, Er YAG and YSGG high-power solid-state laser operating wavelength 2 ~ 3m. (2) diode-pumped solid-state lasers since the mid-eighties, laser diode-pumped solid-state laser development is very active, it has a small size, light weight, low power consumption, high reliability a number of advantages.Huaye 200mW Laser Pointer company has been trying its best to get ahead in the industry. These advantages mainly due to its pump source - semiconductor laser diode (LD), LD pump source to overcome the shortcomings of flash, has a long life, high efficiency, small size, light weight advantages. Laser diode pumped solid state laser (DPSS laser) is widely used in military field, the laser is an important research direction, present, due to increased manufacturing output devices, operating life and operating frequency Q-switched, diode-pumped Nd: YAG laser technology continues to mature, active in the field have Amoco Laser, Coherent, Lightwave Electronics Corporation, Maikeleke company, Spectra-Physics Laser Diode Systems. 3 semiconductor laser diode semiconductor laser diode lasers have become an important direction of development, which is due to high-power diode laser pumped solid-state lasers can be used.Haituo 100mW laser pointer firm was established in 1998. Has achieved a high-power diodes and arrays. This device is designed to improve the life and power output, while reducing the threshold current. Diode lasers can be roughly divided into three bands: visible, near infrared and long wave in the vicinity of 680nm wavelength of visible light emission diode lasers has been widely used, the main application is the bar code scanning and optical data storage. Near-infrared (800 - 1000nm) diode lasers to make progress in several applications of this device is more popular, 808nm and near the array is a high-power diode Nd: YAG and other solid-state laser pump source. High-power near-infrared diode laser is another extended application communication with the 980nm pump erbium-doped fiber amplifier.Haituo green laster pointer firm has a long history. Communication is a major long-wave diode laser market. 4 tunable lasers a long time, tunable dye laser to laser-based, but recently tunable solid and semiconductor laser technology is rapidly improving. Not only Ti gem, alexandrite like solid materials can be tuned, forsterite is also easy to tune. Titanium-doped sapphire laser is developing rapidly. 5 gas laser technology is relatively mature gas lasers, ion lasers used in confocal microscopy, CD burning and holography applications. Mixed gas ion laser, a major area of entertainment. For industrial applications, CO_ laser is to small, reliable and long life ahead of new limits. Excimer laser is mainly used for medical, marking and micro machining and semiconductor lithography on. Laser appears, began a military laser applications, the development of military laser technology so far has been 30 years of history, laser technology has penetrated into the detection, identification, guidance, navigation, command, control, communications, training, and against the various optical the military field. Haituo 10mW blue violet laser pointer company was founded in Jinan.10, cutting-edge technologies [technology] a space, air and space technology history and development (1) the history of aerospace technology development and current status is generally believed that the earth's surface 100 kilometers away from the space below the "empty", 100 km above the space "Heaven", but not between the absolute dividing line.