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

作　　者：傅鑫 张洪明 燕萌 姚敏玉 

机构地区：[1]State Key Laboratory on Integrated Optoelectronics,Tsinghua National Laboratory for Information Science and Technology,Department of Electronic Engineering,Tsinghua University

出　　处：《Chinese Optics Letters》2009年第11期1010-1011,共2页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.60607008);the National "863" Program of China (No.2007AA01Z271)

摘　　要：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.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.

关 键 词：Electric generators Laser pulses LASERS Light modulators Light pulse generators MODULATION Q switched lasers 

分 类 号：TN248[电子电信—物理电子学]