基于Sb_(2)O_(3)可饱和吸收体的2.8μm被动调Q激光器  

Passively Q-switched 2.8μm Laser Based on Sb_(2)O_(3) Saturable Absorber

作　　者：张雅馨 陈邱笛 卢思亮 陈言 张沛雄[1,2] 李真 陈振强[1,2] ZHANG Yaxin;CHEN Qiudi;LU Siiang;CHEN Yan;ZHANG Peixiong;LI Zhen;CHEN Zhenqiang(College of Physics&Optoelectronic Engineering,Jinan University,Guangzhou 510632,China;Guangdong Provincial Engineering Research Center of Crystal and Laser Technology,Guangzhou 510632,China)

机构地区：[1]暨南大学物理与光电工程学院,广东广州510632 [2]广东省晶体与激光技术工程研究中心,广东广州510632

出　　处：《发光学报》2025年第3期528-535,共8页Chinese Journal of Luminescence

基　　金：国家自然科学基金(61935010,62175091,51972149,51872307,51702124);广东省重点领域研究发展计划(2020B0090922006);广州市科技计划(2024A03J0240)。

摘　　要：提出了一种采用978 nm侧泵的基于氧化锑可饱和吸收体掺铒被动调Q激光器。采用垂直微间距升华法(chemical reaction assisted vertical micro sublimation method,CVMS)成功地将Sb_(2)O_(3)转移到Al_(2)O_(3)衬底上,并对其进行了形貌、结构等性能表征。采用978 nm侧泵实现了基于Sb_(2)O_(3)-SA掺铒晶体材料的被动调Q,最大单脉冲能量和最大峰值功率分别为6.84μJ和1.12 W。随着泵浦功率的增加,脉冲宽度从19.64μs减小到6.09μs,重复频率从19.10 kHz增大到62.13 kHz。输出激光的中心波长位于2793 nm,且波长在2793 nm处对应的FWHM为9.10 nm。实验结果表明,基于氧化锑可饱和吸收体的铒掺杂晶体材料被动调Q激光器为利用新型可饱和吸收体实现更低成本、稳定性更强且谐振腔设计简单的~3μm中红外激光器提供了新依据。In this paper,a passive Q-switched laser based on Sb_(2)O_(3) saturable absorber Er^(3+)-doped laser using a 978 nm pump was proposed.The Sb_(2)O_(3) was successfully transferred onto an Al_(2)O_(3) substrate by the chemical reaction assisted vertical micro sublimation method(CVMS),and its properties,such as morphology and structure were char-acterized.The Er^(3+)-doped passive Q-switched laser based on Sb_(2)O_(3)-SA was achieved by using a 978 nm pump,with the maximum single-pulse energy and the maximum peak power of 6.84μJ and 1.12 W,respectively.With the in-crease of the pump power,the pulse width decreased from 19.64μs to 6.09μs,and the repetition frequency in-creased from 19.10 kHz to 62.13 kHz.The center of the output laser wavelength is located at 2793 nm and the FWHM corresponding to the wavelength at 2793 nm is 9.10 nm.The experimental results showed that Er^(3+)-doped passive Q-switched lasers based on Sb_(2)O_(3) saturable absorber provide a new reference to realize lower-cost,more sta-ble~3μm mid-infrared lasers with simpler resonant cavity using a novel saturable absorber.

关 键 词：Er^(3+) ~3μm激光 被动调Q 氧化锑可饱和吸收体 

分 类 号：TN248.4[电子电信—物理电子学]