Coherent monolithic THz generation based on quasi-phase-matched GaP bonded structures pumped by pulsed fiber lasers at ∼ 1.5 μm

Wei Shi, Eliot B. Petersen, Arturo Chavez-Pirson, Nasser Peyghambarian

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

We report coherent monolithic THz generation in GaP QPM bonded structures based on difference-frequency generation (DFG) using two pulsed fiber lasers in the C-band. We observed that the QPM-GaP crystals effectively increase the THz generation power and efficiency with increasing periods of QPM structures. The azimuthal dependence of the THz generation for the GaP QPM bonded structure has been measured when the polarization directions of the two pump beams are orthogonal and parallel, respectively. Moreover, we observed the external cavity enhanced THz DFG when we put the QPM-GaP crystal in an external ring cavity, for the first time. The THz cavity enhancement factor of ∼250 has been achieved compared with the single-pass THz DFG. The maximum THz average power can reach 339 μW, corresponding to a power conversion efficiency of 2.43×10-4 and quantum efficiency of 3.16%.

Original languageEnglish (US)
Title of host publicationNonlinear Frequency Generation and Conversion
Subtitle of host publicationMaterials, Devices, and Applications X
DOIs
StatePublished - Apr 22 2011
EventNonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X - San Francisco, CA, United States
Duration: Jan 24 2011Jan 27 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7917
ISSN (Print)0277-786X

Other

OtherNonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X
CountryUnited States
CitySan Francisco, CA
Period1/24/111/27/11

Keywords

  • Cavity enhancement
  • Fiber amplifier
  • Fiber laser
  • Pulses
  • Quasi-phase-matching
  • Terahertz

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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    Shi, W., Petersen, E. B., Chavez-Pirson, A., & Peyghambarian, N. (2011). Coherent monolithic THz generation based on quasi-phase-matched GaP bonded structures pumped by pulsed fiber lasers at ∼ 1.5 μm. In Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X [79170H] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7917). https://doi.org/10.1117/12.875553