Abstract
In article number 1900460, Hua Li, Juncheng Cao, Kai Zhang, Heping Zeng, and co-workers report a graphene-based approach for enhanced passive frequency comb operation and pulse generation in terahertz semiconductor lasers. The saturable absorption and group velocity dispersion compensation provided by a multi-layer graphene sample result in a laser frequency comb operation with highly stabilized frequency lines and optical pulse generation (16 ps) in the terahertz regime.
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