Towards a supercontinuum-based infrared lidar
Towards a supercontinuum-based infrared lidar
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DOI：
10.1007/s00340-003-1183-x
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发表时间：
2003-06
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影响因子：
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通讯作者：
G. Méjean;J. Kasparian;E. Salmon;J. Yu;J. Wolf;R. Bourayou;R. Sauerbrey;M. Rodriguez;L. Wöste-L.
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文献类型：
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作者：
G. Méjean;J. Kasparian;E. Salmon;J. Yu;J. Wolf;R. Bourayou;R. Sauerbrey;M. Rodriguez;L. Wöste-L.
首次利用太赫兹系统的太瓦飞秒激光器产生的超连续谱获得了近红外激光雷达信号。用一架2米的天文望远镜收集了高度达4公里、波段为1-1.7微米的信号。我们观察到10倍增强的红外信号从大气中后向散射相比，预期使用先前测量的实验室光谱。这表明在长距离传播条件下更有效地将频率转换为红外线（通常为1-1.5 μm波段的7%）。
Lidar signals were obtained for the first time in the near-infrared using the supercontinuum generated by the terawatt femtosecond laser of the Teramobile system. A signal up to 4 km in altitude, in the band 1–1.7 μm, was collected using a 2 m astronomical telescope. We observed a 10-fold enhancement of the infrared signal backscattered from the atmosphere compared with that expected using a previously measured laboratory spectrum. This suggests a more efficient frequency conversion into the infrared (typically 7% into the 1–1.5 μm band) under long-distance propagation conditions.