Andersen Joachim F, Busck Jens, Heiselberg Henning
Danish Defense Research Establishment, Ryvanges Allé 1, DK-2100 Copenhagen, Denmark.
Appl Opt. 2006 Aug 20;45(24):6198-204. doi: 10.1364/ao.45.006198.
Raman scattering in single-mode optical fibers is exploited to generate multispectral light from a green nanolaser with high pulse repetition rate. Each pulse triggers a picosecond camera and measures the distance by time-of-flight in each of the 0.5 Mpixels. Three-dimensional images are then constructed with submillimeter accuracy for all visible colors. The generation of a series of Stokes peaks by Raman scattering in a Si fiber is discussed in detail and the laser radar technique is demonstrated. The data recording takes only a few seconds, and the high accuracy 3D color imaging works at ranges up to approximately 200 m. Applications for optical tomography in highly scattering media such as water and human tissue are mentioned.
利用单模光纤中的拉曼散射，从具有高脉冲重复率的绿色纳米激光器产生多光谱光。每个脉冲触发一台皮秒相机，并通过飞行时间测量每个0.5兆像素的距离。然后以亚毫米精度构建所有可见颜色的三维图像。详细讨论了硅光纤中拉曼散射产生一系列斯托克斯峰的情况，并展示了激光雷达技术。数据记录仅需几秒钟，高精度三维彩色成像在高达约200米的范围内有效。文中还提到了在水和人体组织等高度散射介质中的光学层析成像应用。
