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60年代初,激光步入了现代科学殿堂。从此,它以迷人的色彩和神奇的功能使许多科学家叹为观止。随着现代科学技术的发展,出现了以固体、气体、半导体与液体等材料激发的激光器,同时,激光被广泛用于军事领域。步兵以排山倒海之势,叫喊着向阵地冲来。此时,守方的将士们沉着应战,他们端起手中的“卡宾枪”迎击敌人,战斗很快结束了。在这次战斗中,虽然没有听到激烈的枪炮声,但是,进攻的士兵却一个个倒下了——他们痛苦地捂住自己的双眼,躺在地上惨叫着……这些士兵虽然无一
In the early 60s, the laser entered the hall of modern science. Since then, it has fascinated many scientists with its attractive colors and amazing features. With the development of modern science and technology, there have been lasers which are excited by materials such as solid, gas, semiconductor and liquid. At the same time, lasers are widely used in military field. Infantry to the descent into the sea, shouting to the rushed position. At this point, the defenders of the soldiers calmly fight, they put their hands “carbines” to greet the enemy, the battle ended quickly. Although no intense firearms were heard in this battle, the offensive soldiers fell one after another - they covered their eyes in pain and screamed on the ground ... though none of the soldiers one