栅栏
材料科学
光学
极化(电化学)
光电子学
激光器
垂直腔面发射激光器
正交偏振光谱成像
波长
超声波光栅
衍射光栅
闪耀光栅
物理
化学
物理化学
作者
Qing Fu,Yanhong Sun,suzhen Yu,Ancheng Wang,Jia-Jing Yin,Yongming Zhao,Jianrong Dong
出处
期刊:Nanomaterials
[MDPI AG]
日期:2023-03-21
卷期号:13 (6): 1120-1120
摘要
Low threshold current and polarization-stabilized 795 nm vertical-cavity surface-emitting lasers (VCSELs) are fabricated by integrating a surface grating of high polarization selectivity and high reflectivity. The rigorous coupled-wave analysis method is used to design the surface grating. For the devices with a grating period of 500 nm, a grating depth of ~150 nm, and a diameter of the surface grating region of 5 μm, a threshold current of 0.4 mA and an orthogonal polarization suppression ratio (OPSR) of 19.56 dB are obtained. The emission wavelength of 795 nm of a single transverse mode VCSEL is achieved at a temperature of 85 °C under an injection current of 0.9 mA. In addition, experiments demonstrate that the threshold and output power also depended on the size of the grating region.
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