基于二维非对称光子晶体的窄线宽紫外激光器的研究

项目名称： 基于二维非对称光子晶体的窄线宽紫外激光器的研究

项目编号： No.11504022

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 彭瑜

作者单位： 北京林业大学

项目金额： 24万元

中文摘要： 窄线宽激光器在科学研究与技术领域中有着重要且广泛的应用，如光原子钟、重力波检测等。近年来，随着光原子钟和腔量子电动力学领域的快速发展，窄线宽紫外激光源研究成为一种迫切的需要，特别地，用于铟离子(In+)光钟钟跃迁236.5 nm和汞(Hg)原子光钟钟跃迁266 nm探测的窄线宽紫外激光源。. 以往产生紫外波段窄线宽激光的方法是由红外激光器经过两次倍频获得，再通过激光稳频技术实现窄线宽紫外激光输出。由于涉及到两次倍频过程，第一级倍频腔的锁定稳定性直接决定第二级倍频腔的锁定稳定性，这是以往紫外窄线宽激光器功率稳定性差的原因所在；再者以往的窄线宽紫外激光器实现较为复杂，技术和实验条件要求较高。本基金项目旨在利用单个二维非对称光子晶体(ANPC)和长外腔实现稳定可靠、易实现的窄线宽紫外激光源，目前，该思想未见相关的报道。

中文关键词： 激光器；紫外激光器；窄线宽；倍频；倍频晶体

英文摘要： Narrow-linewidth laser has been widely used in the field of science and technology, such as optical clocks, gravitational wave detection, etc. In recent years, with the rapid development of optical clocks and cavity quantum electrodynamics, narrow-linewidth ultraviolet laser has an urgent need, particularly, laser source for probing Indium ion (In+) clock transition of 236.5 nm and mercury (Hg) clock transition of 266 nm.. Narrow-linewidth ultraviolet laser is usually obtained by frequency doubling two times, meanwhile with frequency stabilization technology before. Because of involving two frequency doubling processes, the first process stability decides directly the second process's, which is main source of the former poor stability. Moreover the previous laser is relatively complicated, which needs strict technical and experimental conditions. This project aims to use a single asymmetric two-dimensional photonic crystal (ANPC) and long-external cavity to realize a stable and reliable narrow-linewidth UV laser. This idea has not been reported yet so far.

英文关键词： laser;ultraviolet laser;narrow-linewidth;frequency doubling;doubling crystal