Repetition rate tunable ultra-short optical pulse generation based on electrical pattern generator

An actively mode-locked laser with tunable repetition rate is proposed and experimentally demonstrated based on a programmable electrical pattern generator.By changing the repetition rate of the electrical patterns applied on the in-cavity modulator, the repetition rate of the output optical pulse sequences changes accordingly while the pulse width of the optical pulse train remains almost constant.In other words, the output ultra-short pulse train has a tunable duty cycle.In a proof-of-principle experiment, optical pulses with repetition rates of 10, 5, 2.5 and 1.25 GHz are obtained by adjusting the electrical pattern applied on the in-cavity modulator while their pulse widths remain almost unchanged.

作 者： Xin Fu Hongming Zhang Meng Yan Minyu Yao   作者單位： State Key Laboratory on Integrated Optoelectronics,Tsinghua National Laboratory for Information Science and Technology,Department of Electronic Engineering,Tsinghua University,Beijing 100084,China  刊 名： 中國光學快報(英文版)  ISTIC EI 英文刊名： CHINESE OPTICS OF LETTERS  年，卷(期)： 2009 07(11)  分類號： O4  關鍵詞：  

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