▎ 摘 要
NOVELTY - The laser has a graphene thin film attached with an optical fiber head. The optical fiber head is inserted into an annular laser cavity. The optical fiber head is connected with an amplitude modulation driving mold to realize mode-lock function. USE - Mode-locked laser. ADVANTAGE - The laser has low absorption intensity, rapid recovery time and wide adjustability, and realizes high repetition frequency ultra-short pulse laser light and ensures better mode-locked optimization performance.