光学
材料科学
激光器
光电子学
平版印刷术
功率(物理)
半导体激光器理论
光刻
光功率
面(心理学)
山脊
物理
量子力学
心理学
社会心理学
古生物学
人格
生物
五大性格特征
作者
Kun Tian,Yonggang Zou,Linlin Shi,He Zhang,Yingtian Xu,Jie Fan,Hui Tang,Xiaohui Ma
出处
期刊:Optics Letters
[Optica Publishing Group]
日期:2022-10-24
卷期号:47 (21): 5626-5626
被引量:3
摘要
A novel, to the best of our knowledge, broad-area distributed feedback laser with high-order surface curved gratings has been fabricated based on standard near ultraviolet lithography. The characteristics of increasing output power and mode selection are achieved simultaneously by using a broad-area ridge as well as an unstable cavity structure composed of curved gratings and a high-reflectivity coated rear facet. Suppression of high-order lateral modes is realized by setting current injection/non-injection regions and asymmetric waveguides. This DFB laser emitting around 1070 nm has achieved a spectral width of 0.138 nm and a maximum output power of 915 mW kink-free optical power. The threshold current and side-mode suppression ratio of the device are 370 mA and 33 dB, respectively. The simple manufacturing process and stable performance give this high-power laser broad application prospects in the fields of light detection and ranging, laser pumps, optical disk access, etc.
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