Volume 4 Issue 1
Feb.  2011
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LIU Hui, LIU Bai-yu, BAI Yong-lin, OUYANG Xian, GOU Yong-sheng, ZHENG Jin-kun. Design of arbitrary waveform generator for shaping high power laser system[J]. Chinese Optics, 2011, 4(1): 60-65.
Citation: LIU Hui, LIU Bai-yu, BAI Yong-lin, OUYANG Xian, GOU Yong-sheng, ZHENG Jin-kun. Design of arbitrary waveform generator for shaping high power laser system[J]. Chinese Optics, 2011, 4(1): 60-65.

Design of arbitrary waveform generator for shaping high power laser system

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  • Author Bio:

    LIU Hui(1986—), male, born in Linyi Shandong Province. He received his B.S degree in electrical engineering from South-Central University for Nationalities in 2008. Now he is working for M.S degree in Xi'an Institute of Optics and Precision Mechanics of CAS. His research interest is ultra-bandwidth pulse shaping technology. E-mail:liuhui@opt.ac.cn
    LIU Bai-yu(1964—), male, born in Weinan Shanxi Province, researcher. He received his B.S degree from Tsinghua University in 1986. At present, he is a researcher in Xi'an Institute of Optics and Precision Mechanics of CAS. His research interest is ultrafast electronics. E-mail: liubaiyu@opt.ac.cn

    LIU Hui(1986—), male, born in Linyi Shandong Province. He received his B.S degree in electrical engineering from South-Central University for Nationalities in 2008. Now he is working for M.S degree in Xi'an Institute of Optics and Precision Mechanics of CAS. His research interest is ultra-bandwidth pulse shaping technology. E-mail:liuhui@opt.ac.cn
    LIU Bai-yu(1964—), male, born in Weinan Shanxi Province, researcher. He received his B.S degree from Tsinghua University in 1986. At present, he is a researcher in Xi'an Institute of Optics and Precision Mechanics of CAS. His research interest is ultrafast electronics. E-mail: liubaiyu@opt.ac.cn

  • Received Date: 16 Aug 2010
  • Rev Recd Date: 23 Oct 2010
  • Publish Date: 25 Feb 2011
  • In order to improve the output power of a laser pulse in the Inertia Confinement Fusion(ICF) system, an Arbitrary Generator(AWG) is designed to shape the laser pulse with an ideal condition. The ultra-narrow pulse is used to trigger the GaAs Field Effect Transistor(FET) to generate multiple negative pulses. The different time delays for each pulse are introduced by transmitting it through an analog time delay wire. Finally, a micro-strip line is obtained to couple the pulses and to get the overlapped pulse shape. The gate bias on FET is used to determine the magnitude of pulse, so the arbitrary pulse is gotten by overlapping the multiple pulses with various magnitudes and time delays. To satisfy the high amplitude requirement of electrical pulse for the ICF system, an ultra-broad bandwidth and voltage tunable amplifier is applied to the output signals and the pulse amplitude is adjustable. The designed AWG generates a pulse waveform with amplitude between 0 and 5 V, pulse width less than 10 ns and a square waveform rising edge in 520 ps, falling edge in 790 ps. The experiment shows the shaped laser pulse is obtained based on the shaping electrical pulse.

     

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