Efficient Parametric Terahertz Generation in Quasi-Phase-Matched GaP through Cavity Enhanced Difference-Frequency Generation

Abstract

We report an efficient parametric terahertz (THz) source by using bonded quasi-phase-matched (QPM) GaP crystals pumped by the C-band pulsed fiber lasers in a master oscillator power amplifier configuration, based on difference frequency generation (DFG). We observed that the QPM-GaP crystals can effectively increase the THz generation power and efficiency by increasing the number of periods. Moreover, we observed external cavity enhanced THz DFG by placing the QPM-GaP crystal in an external ring cavity. The THz cavity enhancement factor of approximately 250 has been achieved in comparison with a single-pass THz DFG. The maximum THz average power can reach 339 microW, corresponding to a power conversion efficiency of 2.43 x 10(expn 4) and a quantum efficiency of 3.16%.

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Document Details

Document Type
Technical Report
Publication Date
Mar 25, 2011
Accession Number
ADA576334

Entities

People

  • Adam T. Cooney
  • Arturo Chavez-pirson
  • Eliot B. Petersen
  • N. Peyghambarian
  • Wei Shi

Organizations

  • Air Force Research Laboratory

Tags

DTIC Thesaurus Topics

  • Air Force
  • Amplifiers
  • C Band
  • Demographic Cohorts
  • Detection
  • Difference Frequency
  • Efficiency
  • Frequency
  • Laser Pulses
  • Lasers
  • Military Research
  • Optical Fiber Lasers
  • Peak Power
  • Physics
  • Power Amplifiers
  • Quantum Efficiency
  • Universities

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Directed Energy
  • Quantum Computing