期刊
PHOTONICS RESEARCH
卷 6, 期 7, 页码 674-680出版社
OPTICAL SOC AMER
DOI: 10.1364/PRJ.6.000674
关键词
-
类别
资金
- Science Foundation Ireland (SFI) [12/IA/1306]
- Seventh Framework Programme (FP7) (ISLA) [287732]
- National Natural Science Foundation of China (NSFC) [61522510, 61675217, 11704261, 11575118]
- Strategic Priority Research Program of Chinese Academy of Sciences (CAS) [XDB16030700]
- Key Research Program of Frontier Science of Chinese Academy of Sciences [QYZDB-SSW-JSC041]
- Program of Shanghai Academic Research Leader [17XD1403900]
- Shenzhen Key Lab Fund [ZDSYS 20170228105421966]
Two-dimensional transition metal dichalcogenides are considered promising materials for next-generation photonics and nano-optical devices. Although many previous reports have shown saturable absorption of molybdenum diselenide (MoSe2), these nonlinear optical (NLO) properties of MoSe2 were measured in separate works and under different conditions with their hot-carrier relaxations. Here, we conducted a series of coherent studies on the NLO properties of few-layer MoSe2 via open-aperture Z-scan and degenerate pump-probe techniques. These measurements were taken to test the materials' capabilities as a slow-saturable absorber. A slow-absorber model was employed to analyze the NLO measurements, and the results show that the NLO modulation depth was modeled to be 7.4% and 15.1% for the linear absorption coefficients of 5.22 cm(-1) and 6.51 cm-1, respectively. The corresponding saturated intensities were modeled to be 39.37 MW/cm(2) and 234.75 MW/cm(2), respectively. The excitation carrier recovery time of few-layer MoSe2 was measured by degenerate pump-probe techniques to be similar to 220 ps. These nonlinear optical performances make it a promising slow-saturable absorber for passive mode locking in femtosecond lasers. (C) 2018 Chinese Laser Press
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据