调Q锁模运转的Tm∶ZBLAN薄片激光器  

Q-Switched Mode-Locked Thin-Disk Tm∶ZBLAN Laser

作　　者：张明霞[1] 周珑[1] 令维军[1] 袁振 王文婷 薛婧雯 王翀 杜晓娟 董忠[1] Zhang Mingxia;Zhou Long;Ling Weijun;Yuan Zhen;Wang Wenting;Xue Jingwen;Wang Chong;Du Xiaojuan;Dong Zhong(Institute of Laser Technology,Tianshui Normal University,Tianshui,Gansu 741001,China)

机构地区：[1]天水师范学院激光技术研究所,甘肃天水741001

出　　处：《激光与光电子学进展》2022年第1期276-280,共5页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(11774257,61564008);国家重点研发计划(2017YFB0405204);甘肃省高等学校产业支撑计划项目(2020C-23);甘肃省重点研发计划项目(21YFIGE300);天水师范学院研究生创新引导项目(TYCX2035)。

摘　　要：利用特殊的散热设计,在Tm∶ZBLAN玻璃激光器中实现连续和被动调Q锁模运转。分别采用透过率为1.5%、3%、5%的输出镜在激光连续运转时获得254 mW、296 mW、230 mW的最高输出功率。为了实现锁模运转,选用透过率为1.5%的输出镜,将透射式GaAs-SESAM作为锁模元件,出光阈值仅为131 mW,当吸收泵浦功率大于1.09 W时,实现了稳定的调Q锁模运转,最大输出功率为98 mW,调Q包络脉冲宽度为6μs,重复频率为19.23 kHz,调Q包络下脉冲的重复频率为102 MHz,脉冲宽度约为800 ps,最大单脉冲能量为0.96 nJ。In this study,we have achieved novel continuous and passive Q-switched mode-locked operation in a Tm∶ZBLAN laser using a special crystal design.When the laser is in continuous operation,the maximum output power of 254,296,and 230 mW is obtained using 1.5%,3%,and 5%output mirrors,respectively.We use a 1.5%output mirror and transmission-type GaAs-SESAM as a mode-locking element to achieve a mode-locking operation.The absorbed pump threshold is as low as 131 mW.When the absorption pump power is greater than 1.09 W,a stable Qswitched mode-locking operation is achieved.The maximum output power is 98 mW,the pulse width of the Q-switched envelope is 6μs,the repetition frequency is 19.23 kHz,the repetition frequency of the pulse under the Q-switched envelope is 102 MHz,and the pulse width is about 800 ps.The maximum single-pulse energy is 0.96 nJ.

关 键 词：激光器 薄片激光器 Tm∶ZBLAN SESAM 调Q锁模 

分 类 号：TN248.1[电子电信—物理电子学]