2089 nm调Q锁模Tm,Ho∶CaYAlO4激光器  

Passively Q-switched Mode-locked Tm,Ho∶CaYAlO4 Laser Operating at 2089 nm

作　　者：孙锐 令维军[1] 陈晨 董忠[1] 袁振 许强 张亚妮 SUN Rui;LING Wei-jun;CHEN Chen;DONG Zhong;YUAN Zhen;XU Qiang;ZHANG Ya-ni(Institute of Laser Technology,Tianshui Normal University,Tianshui 741001,China;Institute of Physics and Optoelectronics Technology,Baoji University of Arts and Sciences,Baoji 721016,China)

机构地区：[1]天水师范学院激光技术研究所,甘肃天水741001 [2]宝鸡文理学院物理与光电技术学院,陕西宝鸡721016

出　　处：《发光学报》2020年第3期301-307,共7页Chinese Journal of Luminescence

基　　金：国家重点研发计划(2017YFB045200);国家自然科学基金(11774257,61564008,11647008,11504416);天水师范学院研究生创新引导项目(TYCX1901)资助。

摘　　要：首次采用氧化石墨烯可饱和吸收体作为锁模启动元件在Tm,Ho∶CaYAlO4激光器中实现了稳定的被动调Q锁模运转。在3%输出耦合镜下,Tm,Ho∶CaYAlO4固体激光器获得了最低为293 mW的连续光出光阈值。在腔内引入氧化石墨烯可饱和吸收体后,当吸收抽运功率增大到1859 mW时,Tm,Ho∶CaYAlO4激光器进入稳定的调Q锁模运转状态。当抽运功率达到3 W时,获得中心波长为2089 nm、斜效率为10.1%、对应最大输出功率为213 mW的被动调Q锁模脉冲,重复频率为100 MHz,调Q包络中锁模脉冲的调制深度接近100%。Employing graphene oxide as a saturable absorber,we experimentally demonstrated a passively Q-switched mode-locked(QML)operation of a Tm,Ho∶CaYAlO4 bulk laser.In this case,the absorbed threshold power of Tm,Ho∶CaYAlO4 bulk laser was measured as 293 mW by using a 3%output coupler.When the absorption pumping power reached 1859 mW,it entered a stable Q-switched mode-locked operation state.And when the pumping power reached 3 W,the corresponding maximum output power is 213 mW,corresponding to a slope efficiency of 10.1%,the central wavelength of 2089 nm,the repetition frequency of 100 MHz,and the modulation depth being close to 100%.

关 键 词：Tm Ho∶CaYAlO4激光器 被动调Q锁模 氧化石墨烯 可饱和吸收体 

分 类 号：TN248.1[电子电信—物理电子学]