激光阈值
材料科学
光学
光电子学
分布式布拉格反射镜
激光器
紫外线
激光线宽
基质(水族馆)
聚对苯二甲酸乙二醇酯
灵活的显示器
波长
薄膜晶体管
物理
纳米技术
图层(电子)
复合材料
地质学
海洋学
作者
P. Gu,Shuai Yang,Lilong Ma,Tao Yang,Xin Hou,Yang Mei,Leiying Ying,Hao Long,Baoping Zhang
出处
期刊:Optics Letters
[Optica Publishing Group]
日期:2023-07-12
卷期号:48 (15): 4117-4117
被引量:3
摘要
Flexible optoelectronics is a technique for fabricating optoelectronic devices on a flexible substrate. Compared with conventional devices, flexible optoelectronic devices can be used in more complex working environments benefiting from the mechanical flexibility. Herein, for the first time to the best of our knowledge, a flexible GaN-based microdisk laser on a polyethylene terephthalate (PET) substrate in the ultraviolet A (UVA) range was demonstrated by using thin film transfer process based on laser lift-off (LLO). The lasing wavelength is 370.5 nm with a linewidth of 0.15 nm and a threshold power density of 200 kW/cm2. Additionally, a distributed Bragg reflector (DBR) was deposited on the backside of the microdisk as the bottom mirror between GaN microdisk and PET substrate, which can provide better mode confinement inside the microdisk and increases the oscillation intensity. The lasing wavelength of the flexible laser shows a 2-nm redshift under different bending curvature of the substrate, which is promising for applications such as mechanical sensing.
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