基于石墨烯可饱和吸收体的Er∶YAG被动调Q激光器
Passively Q-Switched Er∶YAG Laser Based on Graphene Saturable Absorber
陈言 1张沛雄 1权聪 2孙敦陆 2李真 1陈振强1
作者信息
- 1. 暨南大学物理与光电工程学院,广州 510632;广东省晶体与激光技术工程研究中心,广州 510632
- 2. 中国科学院合肥物质科学研究院,安徽光学精密机械研究所激光技术研究中心晶体实验室,合肥 230031
- 折叠
摘要
本文研究了一种采用氙灯侧泵方式,并基于石墨烯可饱和吸收体的Er∶YAG被动调Q激光器.首先成功将石墨烯转移至Al2O3衬底制备得到石墨烯可饱和吸收体,并对其进行了形貌、结构及化学状态等性能表征.此外,对基于石墨烯可饱和吸收体的Er∶YAG被动调Q激光特性进行了研究,结果表明单脉冲能量从0.4 mJ增加至7 mJ,输出激光单脉冲宽度从761.2 ns下降至510 ns,最大峰值功率为13.7 kW.激光中心波长位于2 935和2 945 nm,且主波长在2 935 nm处对应的半峰全宽(FWHM)为1.535 nm.沿x和y方向的光束质量因子分别为4.45和5.76.实验结果表明,该研究为推进更低成本、谐振腔设计简单且紧凑的2.94 μm波段Er∶YAG激光器的发展提供了有效的参考依据.
Abstract
In this paper,the Er∶YAG passively Q-switched laser using a xenon lamp side-pumping method and based on a graphene saturable absorber was investigated.Firstly,the graphene saturable absorber was successfully prepared by transferring graphene to the Al2O3 substrate,and its properties such as morphology,structure,and chemical state were characterized.In addition,the characteristics of the Er∶YAG passively Q-switched laser based on graphene saturable absorber were studied.The results show that the single pulse energy increases from 0.4 mJ to 7 mJ,the output laser single pulse width decreases from 761.2 ns to 510 ns,and the maximum peak power is 13.7 kW.The central wavelength of the laser is located at 2 935 and 2 945 nm,and the full width at half maximum(FWHM)corresponding to the main wavelength at 2 935 nm is 1.535 nm.The beam quality factors along the x and y directions are 4.45 and 5.76,respectively.This study provides an effective reference for developing lower cost 2.94 μm band Er∶YAG lasers with simple and compact resonant cavity designs.
关键词
石墨烯可饱和吸收体/氙灯侧泵/被动调Q/Er∶YAG/～3/µm激光Key words
graphene saturable absorber/xenon lamp side-pumping/passively Q-switched/Er∶YAG/～3 μm laser引用本文复制引用
基金项目
国家自然科学基金(61935010)
国家自然科学基金(51972149)
国家自然科学基金(51872307)
国家自然科学基金(51702124)
国家自然科学基金(62175091)
国家自然科学基金(51702124)
广东省重点领域研究发展计划(2020B0090922006)
广州市科技计划(2024A03J0240)
出版年
2024
国家科技期刊平台
NSTL
万方数据