可授權專利


被動式Q開關光纖雷射系統及製造其飽和吸收體的方法 PASSIVELY Q-SWITCHED FIBER LASER SYSTEM AND METHOD FOR FABRICATING A SATURABLE ABSORBER OF THE SYSTEM 


專利名稱 被動式Q開關光纖雷射系統及製造其飽和吸收體的方法
專利國家
   專利證書號
美國 US10424894B2
專利權人 國立台北科技大學
發明人 李穎玟、陳建銘
應用領域
需求項目









技術摘要


A passively Q-switched fiber laser system comprises a pump source and an ring cavity connected with each other. The ring cavity comprises a gain fiber, a directional coupler and a saturable absorber connected in order. The saturable absorber is a quantum-dot polymer composite film, which is fabricated by a simple method comprising steps of: mixing a quantum dot material of lead sulfide (PbS) with a colloidal polymer to form a mixture; and drying the mixture at two different temperatures in two stages respectively. The saturable absorber of the present invention has lower saturating intensity and a plurality of absorption bands comprising 1000 nm to 1100 nm and 1500 nm to 1600 nm. The maximum output power and the maximum pulse energy of the passively Q-switched fiber laser system can be superior to those laser systems using the quantum-dot (QD) polymer composite film as saturable absorber.


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