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Generation of Short Intense Terahertz pulses Through Optical Rectification

Author:
  • Carl Ekström
Publishing year: 2015
Language: English
Document type: Student publication for Master's degree (two years)

Summary

The lack of sources that generates intense THz pulses have in many years limited the field of THz science. Until recently intense THz pulses have been hard to generate using nonlinear crystals such as Lithium Niobate (LiNbO3) with high efficiency. In this thesis a method is presented for achieving short and intense THz pulses through optical rectification using the recently developed tilted pulsefront technique. This method involves using an amplified pulsed Ti:Sapphire laser and a LiNbO3 crystal. The thesis describes the theory behind THz generation and the practical steps required in order to implement it. The final design is portable and has a high conversion efficiency of 0.08% and intense THz pulses with energies up to 0.4 µJ were generated.

Keywords

  • Physics and Astronomy
  • Technology and Engineering
  • Terahertz
  • THz
  • Optical Rectification
  • OR
  • Photonics
  • Optics
  • LiNbO3

Other

  • Jörgen Larsson