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13 September 2012 Photon returns test of the pulsed sodium guide star laser on the 1.8 meter telescope
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A microsecond pulsed sodium has been developed in TIPC laser physics research center, the power of this laser is around 20W and the length of the pulse is about 120 microseconds. In 2011, an experiment to project the TIPC prototype laser to the sky and measure the photon returns of the laser has been held on the 1.8 meter telescope in Yunnan observation site. During the sky test, an artificial sodium beacon has been successfully generated, and the brightness of the sodium beacon is around 8.7M in V Band. In the 2012 test campaign, the sodium column density facility has mounted on the telescope to test the local sodium density and structure and the sodium density test result is around 2.2x1013/m2.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kai Wei, Yong Bo, Xianghui Xue, Xuewu Cheng, Cheng Li, Junwei Zuo, Shiyong Xie, Changhui Rao, and Yudong Zhang "Photon returns test of the pulsed sodium guide star laser on the 1.8 meter telescope", Proc. SPIE 8447, Adaptive Optics Systems III, 84471R (13 September 2012);

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