新型钠信标激光器研究进展

自适应光学技术广泛应用于大型地基光学望远镜,以校正大气扰动造成的波前畸变,使望远镜达到近衍射极限分辨率,实现对观测目标的清晰成像。激光钠导引星作为自适应光学校正的信标源,是自适应光学望远镜的核心技术之一。介绍了589nm光抽运垂直外腔面发射半导体钠导引星激光器和掺Dy3+晶体作为增益介质直接发射589nm激光的固体激光器的最新研究进展。这些方案因其具有体积小、效率高、可靠性高、成本低、易维护等优势,被认为是新一代钠导引星激光器有潜力的发展方向。

The research progress of the new sodium beacon laser

Adaptive optics technology was widely used in large-scale ground-based optical telescope to correct the wavefront distortion caused by atmospheric disturbance, make the telescope reach the resolution near diffraction limit, and realize the clear imag-ing of the observed object. As the beacon source of adaptive optical correction, laser sodium guide star was one of the core technologies of adaptive optical telescope. The latest research progress of the new sodium beacon laser was demonstrated, include the 589nm optical pumped vertical external cavity surface emitting semiconductor sodium guide star laser and the all solid-state laser with Dy3+-doped crystal as gain medium, which can directly emit 589nm laser. Due to their advantages of small size, high efficiency, high reliability, low cost and easy maintenance, these schemes are considered as the possible development direction of the new generation of sodium guide star lasers.