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    • 1. 发明授权
    • High-performance gas laser
    • 高性能气体激光
    • US3641457A
    • 1972-02-08
    • US3641457D
    • 1969-09-10
    • UNITED AIRCRAFT CORP
    • BROWN CLYDE OBULLIS ROBERT H
    • H01S3/097H01S3/0975H01S3/0979H01S3/05H01S3/09
    • H01S3/097H01S3/0975H01S3/0979
    • Flowing gas laser systems of a variety of configurations, including exemplary CO2-N2-He systems, are provided with a critical amount of relaxant gas, determined by maximum differential between the upper and lower laser levels of the lasing gas for a given rate of excitation of the upper laser level, a mass flow suitably high to convect the heat away from the optical gain region causing the temperature of the optical gain region to be maintained suitably low that the equilibrium population of an upper energy state of a limiting self-relaxation process between the lower laser level and ground is maintained less than the significant fraction of the total lasing gas population. Increased mass flow, resulting partially from increased pressure, provides increased losses within the electric field region where the upper laser level is excited through electron collisions, the increased losses permitting operation with a higher electric field, with higher electron densities, and with increased pressure, thereby permitting operation at an optimum ratio between electric field to neutral particle density with a higher electric field.
    • 具有各种构造的流动气体激光系统,包括示例性的CO2-N2-He系统,具有临界量的松弛气体,由给定的激发速率的激光气体的上下激光水平之间的最大差异确定 上部激光水平的质量流量适当地高于将热量从光学增益区域对流,导致光学增益区域的温度保持适当地低,使得限制自弛豫过程的上部能量状态的平衡群体 在较低的激光水平和地面之间保持小于总的激光气体总体的显着部分。 增加的质量流量部分地由增加的压力引起,在电场区域内提供增加的损耗,其中上激光水平通过电子碰撞激发,增加的损耗允许以较高的电场操作,具有较高的电场密度,并且随着压力的增加, 从而允许以较高电场的电场与中性粒子密度之间的最佳比例进行操作。