
第 42 卷 第 11 期
2015 年 11 月
Vol. 42, No. 11
November, 2015
中 国 激 光
CHINESE JOURNAL OF LASERS
1102002-
一种基于铌酸锂晶体的高效紧凑腔内倍频绿光激光器
桂诗信
1
常建华
1,2,3
严 娜
1
郭 跃
1
伍 煜
1
1
南京信息工程大学江苏省气象探测与信息处理重点实验室, 江苏 南京 210044
2
南京信息工程大学江苏省大气环境与装备技术协同创新中心, 江苏 南京 210044
3
南京信息工程大学滨江学院电子工程系, 江苏 南京 210044
摘要 基于周期极化铌酸锂(PPLN)晶体提出并设计了一种高效紧凑腔内倍频绿光激光器。该激光系统采用 808 nm
激光二极管(LD)端面直接抽运 Nd∶YVO
4
晶体,进而利用极化周期为 7 μm 的 PPLN 晶体倍频产生 532 nm 绿光。通过在
Nd∶YVO
4
和 PPLN 晶体端面镀膜构成激光腔镜,无需采用任何光学透镜、反射镜等分立光学元件,大大降低了系统体
积和成本。实验结果显示,当激光器谐振腔腔长为 12 mm,抽运功率为 4.1 W 时,绿光输出功率可达 1.343 W,相应的
光-光转换效率达 32.8%。当 LD 抽运功率稳定在 3.33 W 时,2 h 内的绿光输出功率波动小于 5%。
关键词 激光器; 非线性光学; 绿光激光器; 倍频; 铌酸锂晶体
中图分类号 O437.4 文献标识码 A
doi: 10.3788/CJL201542.1102002
A Compact and Highly Efficient Intracavity Frequency-Doubled
Green Laser Based on Periodically Poled Lithium Niobate
Gui Shixin
1
Chang Jianhua
1,2,3
Yan Na
1
Guo Yue
1
Wu Yu
1
1
Jiangsu Key Laboratory of Meteorological Observation and Information Processing, Nanjing University of
Information Science & Technology, Nanjing, Jiangsu 210044, China
2
Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of
Information Science & Technology, Nanjing, Jiangsu 210044, China
3
Department of Electronic Engineering, Binjiang College, Nanjing University of Information Science & Technology,
Nanjing, Jiangsu 210044, China
Abstract A compact and highly efficient intracavity frequency- doubled green laser has been researched and
designed based on periodically poled lithium niobate (PPLN) crystal. The laser system adopts a 808 nm laser diode
(LD) end directly pumped Nd∶YVO
4
crystal, then uses a poling period of 7 mm of PPLN crystal to generate 532 nm
green light by frequency-doubling. The coating Nd∶YVO
4
and PPLN crystals compose a laser cavity, without using
any discrete optical components such as optical lens, reflector, thus reducing the volume and cost of the system.
The experimental results show that with the resonator cavity length being set at 12 mm, pump power at 4.1 W, the
green light output power of 1.343 W and the corresponding optical- optical conversion efficiency of 32.8% are
achieved. Controlling the incident pump power at about 3.33 W, the fluctuation of green light output power within
2 h is less than 2%.
Key words lasers; nonlinear optics; green laser; frequency-doubled; lithium niobate crystal
OCIS codes 190.4360;140.3515;130.3730
收稿日期: 2015-04-24; 收到修改稿日期: 2015-07-11
基金 项目: 国家 自然科 学基金(11374161),江苏 省信息与 通信工 程优势学 科,中国博士后 科学基金(2015M571781),江 苏省
博士后基金(1401022B)
作者简介: 桂诗信(1989—),男,硕士研究生,主要从事非线性光频转换方面的研究。E-mail: guishixin0001@163.com
导师简介: 常建华(1976—),男,博士,教授,博士生导师,主要从事光子学与光器件、光电传感技术等方面的研究。
E-mail: jianhuachang@nuist.edu.cn
1