Er-doped all fiber lasers based on chirped-pulse amplification

LI Lang; LIU Yang; WANG Chao; PAN Haifeng

doi:10.7510/jgjs.issn.1001-3806.2016.03.001

In order to achieve ultrashort laser pulse output by all fiber chirped pulse amplification technique, dispersion compensation fiber and single mode fiber were used to stretch and compress the laser pulse in the time domain, respectively. The laser system was structured by three components: oscillator, pre-amplifier and main amplifier. The whole laser system was verified theoretically and experimentally. Ultrashort pulse laser with pulse duration of 420fs and average power of 1.81W was obtained. One piece of periodically poled lithium niobate crystal was employed to yield second-harmonic generation, so that the operating wavelength was extended to near infrared region centered at 780nm with full width at half maximum of 11nm. The results show that the spectra distortion can be precisely controlled during the whole amplification process by adjusting the insert dispersion. The study could be very helpful for study on high power all fiber ultrashort fiber amplifiers.

Er-doped all fiber lasers based on chirped-pulse amplification

Corresponding author: PAN Haifeng, hfpan@phy.ecnu.edu.cn

1. State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China

Received Date: 2015-04-02

Accepted Date: 2015-05-28

Available Online: 2016-05-25

Abstract: In order to achieve ultrashort laser pulse output by all fiber chirped pulse amplification technique, dispersion compensation fiber and single mode fiber were used to stretch and compress the laser pulse in the time domain, respectively. The laser system was structured by three components: oscillator, pre-amplifier and main amplifier. The whole laser system was verified theoretically and experimentally. Ultrashort pulse laser with pulse duration of 420fs and average power of 1.81W was obtained. One piece of periodically poled lithium niobate crystal was employed to yield second-harmonic generation, so that the operating wavelength was extended to near infrared region centered at 780nm with full width at half maximum of 11nm. The results show that the spectra distortion can be precisely controlled during the whole amplification process by adjusting the insert dispersion. The study could be very helpful for study on high power all fiber ultrashort fiber amplifiers.

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Reference (16)

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Er-doped all fiber lasers based on chirped-pulse amplification

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