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首页> 外文会议>25th Plasmadynamics and Lasers Conference June 20-23, 1994/Colorado Springs, CO >2-D gain measurements in a COIL device
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2-D gain measurements in a COIL device

机译：COIL设备中的二维增益测量

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摘要

The spatial distribution of gain has been investigated on RADICL, a supersonic chemical oxygen-iodine laser (COIL). A frequency-stabilized, narrow linewidth diode laser system operating on the F=3 - F=4 hyperfine levels of the (~2P1/2) to (~2P_(3/2) spin-orbit transition in atomic iodine was used as a small singnal probe. The peak gain of 1.2 &/cm measured along the horizontal centerline of the singleslit, supersonic nozzle is about two times greater than measurements made on ReCOIL~1 and compares favorably with measurements made on the RotoCOIL device.~2 Gain distribution was investigated under three I_2 flow conditions. Scans across the supersonic expansion indicate a gradient in gain distribution, due to higher gas temperatures along the walls and mixing phenomena.
机译：增益的空间分布已在超音波化学氧碘激光器（COIL）的RADICL上进行了研究。使用在原子碘中从（〜2P1 / 2）到（〜2P_（3/2）自旋轨道跃迁的F = 3-F = 4超精细能级的频率稳定的窄线宽二极管激光系统小型单探头，沿单缝超声喷嘴水平中心线测得的峰值增益为1.2＆/ cm，约为在ReCOIL〜1上进行的测量的两倍，并且与RotoCOIL装置上进行的测量相当。〜2增益分布在三种I_2流动条件下进行了研究，由于沿壁的较高气体温度和混合现象，超音速膨胀的扫描表明增益分布存在梯度。

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