Experimental demonstration of a Rayleigh-scattered laser guide star at 351 nm.
Experimental demonstration of a Rayleigh-scattered laser guide star at 351 nm.
复制标题
351 nm 瑞利散射激光导星的实验演示。
作者：
Laird A. Thompson;R. M. Castle
使用商业制造的准分子激光器将聚焦激光束投射到大气中，高度为 10 至 30 公里。当在地面望远镜中成像时，来自照明柱切片的瑞利反向散射光产生的图像与自然恒星的图像基本相同。该实验证明了在 351 nm 处产生明亮且聚焦清晰的激光导星是很容易的。这种激光导星非常适合引导配备自适应光学器件的天文望远镜。
A commercially manufactured excimer laser was used to project a focused laser beam into the atmosphere to altitudes in the range of 10 to 30 km. Rayleigh-backscattered light from a slice of the illuminated column, when imaged in a ground-based telescope, produced an image that is essentially identical to that of a natural star. This experiment demonstrates the ease of producing bright and sharply focused laser guide stars at 351 nm. Such laser guide stars are ideal for guiding astronomical telescopes equipped with adaptive optics.