项目名称： 用于铯原子单光子跃迁里德堡激发的单频紫外激光实验实现的关键技术

项目编号： No.61475091

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 王军民

作者单位： 山西大学

项目金额： 85万元

中文摘要： 窄线宽可调谐紫光和紫外激光的实现对于碱金属原子里德堡激发、碱土金属原子和离子等的激光冷却与操控具有重要意义，也是激光技术和非线性光学的重要发展方向。碱金属原子的里德堡激发在量子光学、量子信息方面有重要前景；而碱土金属原子和离子等在高稳定度光晶格原子光钟、离子光钟和量子光学、量子信息方面也有重要研究价值。结合我们研究组已有的工作基础和积累，充分利用激光技术领域发展迅速的光纤放大器、光纤激光器等和准位相匹配频率转换材料和技术，针对铯原子6S_1/2-85P_3/2单光子跃迁里德堡激发所需的318.6nm窄线宽可调谐紫外激光实验实现，拟开展以下几方面的研究：1)10W级1560nm和1077nm可调谐窄线宽激光的实现及特性研究；2)经高效和频过程实现瓦级637.2nm窄线宽激光输出；3)637.2nm激光频率调谐与频率稳定；4)通过腔增强倍频实现318.6nm紫外激光输出；5)尝试探索铯原子单光子跃迁里德堡激发过程。

中文关键词： 量子调控；量子光学；非线性光学效应；频率转换；激光技术

英文摘要： Realization of frequancy-tunable narrow-linewidth violet and ultraviolet lasers is of great significance in Rydberg excitation of alkali metal atoms,laser cooling and manipulation of alkaline earth metal atoms and ions, and it is also a very important direction of developments in laser technology and nonlinear optics. Rydberg excitation of alkali metal atoms has great prospect in quantum optics and quantum information; Alkaline earth metal atoms and ions can be employed especially in the high-stability optical lattice atomic clock, single-ion optical clock, and other realms in quantum optics and quantum information. With the basis of our previous works and accumulations, adoping the quickly-developed laser technology such as fiber amplifier, narrow-linewidth fiber laser and quasi-phase-matched nonlinear frequency conversion materials, we aim to study many aspects of key techniques and to realize the 318.6nm the narrow-linewidth and tunable ultraviolet laser device for cesium Rydberg excitation using one-step single-photon transition. The research aspects are following: 1) Achievement and characterization of the 10W-level narrow-linewidth and tunable lasers at 1560nm and 1077nm; 2) Efficient sum-frequency generation to obtain the Watt-level narrow-linewidth 637.2nm laser output; 3) Frequency tunibility and stabilization of the 637.2nm laser; 4) Cavity-enhanced frequency doubling to achieve the 318.6nm ultraviolet laser; 5) Try to explore Rydberg excitaion of cesium atoms via single-photon transition.

英文关键词： quantum manipulation;quantum optics;nonlinear optics effect;frequency conversion;laser technology