钠激光导星的共孔径发射接收与谱线匹配技术
Common aperture projecting-detecting mode and wavelength matching technique of sodium beacon
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摘要: 研究了采用时间选通和共孔径方式的钠激光导星技术，并开展了钠信标发射接收实验研究。分析了钠原子共振散射与信标激光波长的匹配关系，介绍了钠信标激光器、距离选通装置、回光探测装置、同步控制装置等的研制工作。实验成功采集到了钠信标图像，通过分析回光图像随信标激光波长的变化规律，验证了波长匹配在钠激光导星中的重要性。Abstract: The sodium laser guide star (LGS) technique which adopted range gating and common aperture mode was researched, and the projecting-detecting experiment was studied. The relationship between sodium resonance scattering and wavelength of beacon laser was analyzed. The development of sodium beacon laser, range gating device, the set of back-scattering detector, synchronous control device etc, was introduced. Sodium beacon images were collected successfully in the experiment. The law of back-scattering images’ varying according to wavelength of laser was analyzed, wavelength matching was proved to be important in sodium LGS．
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Key words:
- adaptive optics /
- sodium beacon /
- common aperture /
- laser guide star
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