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Optically Pumped Monolayer MoSe2 Excitonic Lasers from Whispering Gallery Mode Microcavities.
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2019-12-30 , DOI: 10.1021/acs.jpclett.9b03589 Xinpeng Fu 1 , Xihong Fu 1 , Yongyi Chen 1, 2 , Li Qin 1 , Hangyu Peng 1 , Ruixin Shi 3 , Fangfei Li 4 , Qiang Zhou 4 , Yubing Wang 1, 2 , Yinli Zhou 1 , Yongqiang Ning 1
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2019-12-30 , DOI: 10.1021/acs.jpclett.9b03589 Xinpeng Fu 1 , Xihong Fu 1 , Yongyi Chen 1, 2 , Li Qin 1 , Hangyu Peng 1 , Ruixin Shi 3 , Fangfei Li 4 , Qiang Zhou 4 , Yubing Wang 1, 2 , Yinli Zhou 1 , Yongqiang Ning 1
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Developing integrable, nanoscale, and low-energy-consumption lasers is a crucial step toward on-chip optical communications and computing technologies. The strong exciton-photon interaction that emerged in monolayer transition metal dichalcogenides (TMDs) holds promise for engineering and integration. Herein, we prepare the MoSe2/microsphere cavities excitonic lasers by placing SiO2 microspheres on top of a monolayer MoSe2 film. By virtue of continuous-wave exciting MoSe2/microsphere whispering gallery mode (WGM) cavities, we realize multiple excitonic WGM lasing in the emission wavelength range of ∼750-875 nm at room temperature with tunable properties of free spectral range (FSR) and full width at half-maximum (fwhm) by varying the microsphere size. Theoretical calculations based on the finite element method (FEM) using COMSOL software were utilized to identify lasing modes and reveal the corresponding electric field distribution. These findings help to deepen fundamental understanding of excitonic WGM lasing and provide a promising research platform for integrable, scalable, and low-cost laser devices.
中文翻译：
耳语画廊模式微腔中的光泵浦单层MoSe2激子激光器。
开发可集成，纳米级和低能耗的激光器是迈向片上光通信和计算技术的关键一步。单层过渡金属二硫代双金属卤化物（TMD）中出现的强激子-光子相互作用为工程和集成提供了希望。在这里，我们通过将SiO2微球放在单层MoSe2膜的顶部来制备MoSe2 /微球腔激子激光器。借助连续波激发的MoSe2 /微球耳语画廊模式（WGM）腔，我们在室温下在〜750-875 nm的发射波长范围内实现了多种激子WGM激光发射，具有自由光谱范围（FSR）和完整的可调特性通过改变微球尺寸，以最大一半（fwhm）的宽度。利用COMSOL软件基于有限元方法（FEM）进行的理论计算被用于识别激光模式并揭示相应的电场分布。这些发现有助于加深对激子WGM激光的基本理解，并为可集成，可扩展且低成本的激光设备提供有前途的研究平台。
更新日期：2020-01-08
中文翻译：
耳语画廊模式微腔中的光泵浦单层MoSe2激子激光器。
开发可集成，纳米级和低能耗的激光器是迈向片上光通信和计算技术的关键一步。单层过渡金属二硫代双金属卤化物（TMD）中出现的强激子-光子相互作用为工程和集成提供了希望。在这里，我们通过将SiO2微球放在单层MoSe2膜的顶部来制备MoSe2 /微球腔激子激光器。借助连续波激发的MoSe2 /微球耳语画廊模式（WGM）腔，我们在室温下在〜750-875 nm的发射波长范围内实现了多种激子WGM激光发射，具有自由光谱范围（FSR）和完整的可调特性通过改变微球尺寸，以最大一半（fwhm）的宽度。利用COMSOL软件基于有限元方法（FEM）进行的理论计算被用于识别激光模式并揭示相应的电场分布。这些发现有助于加深对激子WGM激光的基本理解，并为可集成，可扩展且低成本的激光设备提供有前途的研究平台。
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