Research Paper: Producing High Average Power Pulses From the Yb:YAG Thin-disk Active Medium with Acousto-optic Modulator

Document Type : Research Paper

Authors

1 Assistant Professor, Department of Engineering Physics, Kermanshah University of Technology, Kermanshah, Iran.

2 Associate Professor, Department of Physics, Tarbiat Modares University, Tehran, Iran.

3 PhD Graduated, Department of Physics, Tarbiat Modares University, Tehran, Iran

4 PhD Graduated, Department of Engineering Physics, Kermanshah University of Technology, Kermanshah, Iran.

Abstract

In recent years, thin-disk active media geometry has facilitated the development of pulsed and continuous laser sources with extremely high output powers. In this study, the technique of Q-switching utilizing an acousto-optic modulator and a Yb: YAG thin-disk active medium was employed to produce high average power and high repetition rate pulses at a wavelength of 1030 nm. The characteristics of output pulses, including time duration, single pulse energy, and average power were measured and analyzed at different pump levels and repetition rates. Depending on the pump level, the fabricated laser operated stably in the repetition range from 0.5 to 9 kHz. The time duration of the output pulses using this approach was approximately one microsecond. Moreover, the output pulse with the maximum energy above 50 mJ and also the maximum average output power of 340 watts was obtained from this laser. Also, the findings indicated that the repetition rate does not significantly affect the output pulse energy at higher pump powers.

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References

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Iranian Journal of Applied Physics

Articles in Press, Accepted Manuscript
Available Online from 18 September 2024

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History

  • Receive Date: 16 March 2024
  • Revise Date: 14 August 2024
  • Accept Date: 12 September 2024

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