Laser driving gun missile guidance type beam of laser information field formed by any link failure or reduced stability will directly lead to ballistic or miss out of control, and based on this, this paper designed the driving beam of laser guided missile guidance beam type forming device modulation and zoom mechanism, in order to make the missile can recognize its position in the laser beam, laser beam gun missile, by means of spatial encoding of the laser beam laser beam into information after forming device, a surface to achieve the purpose of precision guidance. 1.INTRODUCTIONThe conventional artillery artillery missiles and precision-guided missile technology technology cleverly integrated together, and share the same with the ordinary artillery shells fired comprehensively improve the range, accuracy and armor might hit weapons systems . Therefore , the enemy artillery missiles can be fired at enemy fire shot from the outside , before the enemy hits, greatly improve the tanks, other armored vehicles and anti-tank guns of long-range precision ground combat capability of conventional weapons to achieve effective guidance one of the ways . Laserguided driving speed as a command -guided laser-guided technique , the ground-launched guided laser device to send out information field goals , guiding the laser beam at the missile flight , Collembola receives the laser signal , and the formation of the control command , control missile is always in line of sight the flight until the hit the target. Laserguided driving speed does not need wires to transmit instructions , with anti-interference ability 1 , high precision , hidden good. If any part of the information field of laser formed malfunction or reduced stability will directly lead to loss of control or off-target trajectory , based on this , we designed a beam of laser beam riding guidance guided missile forming apparatus reticle and the zoom mechanism , in order to make missiles capable of identifying the position of the laser beam , the laser beam spatial artillery missile in coded form , the laser device is formed after the laser beam of the laser beam becomes the information , accurately guided over the surface to achieve the purpose. 1 DESIGN AN ARTILLERY MISSILE GUIDANCE DEVICE Composition artillery missile guidance deviceArtillery missile weapon system consists of artillery, artillery missile guidance devices and other components, its main role is to find guidance device, used to identify the target and fired a laser beam missile flight control information field. Guided mainly by the instrument guidance device, converters and full connection cables and other components. 2 Aiming guided instrument-guided device is the core component, including a sight to work in two formats (day B, night w) and a constitution on the field of missile flight control system. When the work day, the mirror is stabilized in the vertical direction, the stabilizer system is observed, when the search target is a tank gun barrel with the axis of the follower, and when the missile i...

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An Er/Yb co-doped double cladding fiber laser pumped at 980 nm was optimized. The double-cladding fiber laser with whole fiber was obtained by end-pumping and utilizing fiber bragg grating as a resonator. The output power of laser was analyzed along the changes of output grating reflectance (L=10m) as well as the fiber length (R 2 =4%). Consequently, a fiber with 4 m Er / Yb co-doped double cladding was employed as gain medium while a fiber of which the reflectance was approximately 15% was used as output resonator mirror. Thereafter the technical indexes of EYDF(Er / Yb Double cladding Fiber) were measured. The absorption maximum of fiber core Er 3+ was higher than 30dB/m and material gain maximum was observed at 1535nm. Moreover, the diameters of fiber core and inner cladding of double-cladding fiber grating were 6μm and 125μm respectively however the diameters of fiber core and inner cladding of Er/Yb co-doped double cladding fiber were 7μm and 130μm separately.According to the experimental data, a fiber laser with 4 m Er / Yb co-doped double cladding and launched maximum pump power of 3.4 W was set up. Proposed laser shows the maximum output power of 1.25 W and slope efficiency of 40%.