Friday, May 18, 2012

The economical technology of green laser pointer will improve the costperformance

Therefore, to calculate in advance the amount of damage the target without instantaneous. High-energy laser weapons rely mainly on infrared detectors to capture, track goals, operational process from electromagnetic interference, the defender is difficult to electromagnetic interference means to reduce the probability of hitting the target. High-energy laser weapons firing recoilless force, transfer of fire, fire can be adjusted in the range of 360 °, after hitting a target, simply adjust the angle to attack another target, which can damage the air targets in a short time a large number. Difficult to see that high-energy laser weapons into combat, it will lead to damage the air targets of revolutionary change, people will have to face this harsh reality. The economical technology of green laser pointer will improve the cost performance.
Find out the high-energy laser weapons, the damage mechanism of air targets is very important for the defense laser weapons. The destructive effect of high-energy laser weapons have the destructive effect of thermal ablation, shock damage effects and radiation damage effects. This paper will damage mechanism of the destructive effect of these three preliminary analysis, and to explore appropriate means or measures of defense. Laser to the target, the target material substances in electronic collision due to absorption of light energy converted to heat, rapid increase in temperature of the material surface to reach a certain temperature the material is melting or gasification, resulting steam at very high speed expands outward and splashes it, washed away the molten material droplets or solid particles, thereby causing the material on the pits and even perforation, this effect is called thermal ablation damage effects. The destructive effect of thermal ablation is the most important laser weapon damage. green laser pointer is very important in business contact and so on.

However, high power pulsed laser and material effect, the shielding effect of the surface plasma on the laser ablation effect and negative affect. Laser damage threshold of the thermal ablation of the material can be described with the energy density threshold, the available power density threshold description. In the case of rectangular short pulse laser energy density threshold for a given material damage is a constant power density threshold and pulse width is inversely proportional; in the case of long rectangle pulse, the laser damage to the material given energy density threshold value and the pulse width is proportional to the square root of power density threshold and pulse width is inversely proportional to the square root. Users want to highlight some key points with help of green laser pointer.
In other words, short laser pulses mainly rely on to achieve the power density threshold the material ablation destruction, long-pulse laser energy density threshold depends mainly on the reach ablative destruction of the material. Different material and material of the laser absorption and reflection of the same physical concepts that reflect this ability is the absorption coefficient and reflection coefficient of the material on the laser. According to the law of conservation of energy, the laser can not penetrate the material reflection coefficient and the absorption coefficient of 100%. Undermine the ability of laser ablation on thermal, laser and the material is inversely proportional to the reflection coefficient, the absorption coefficient is proportional to the laser and the material. The laser ray color of green laser led can be chosen by the customer according to the need.
The same melting point of the two materials, when the laser power is small, the thermal conductivity coefficient of the material Shaorong time was needed, smaller thermal conductivity of the material Shaorong takes less time; with the incident laser power time gradually increased, the materials under the action of the laser thermal conductivity, a gradual reduction of the two materials is Shaorong required to gradually close; when the radiation laser power is large enough, the material is too late in the laser induced heat conduction, two The material is Shaorong time required to reach consensus.

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