Custom terahertz waveforms using complementary organic nonlinear optical crystals
Claire Rader, Megan F. Nielson, Brittany E. Knighton, Zachary B. Zaccardi, David J. Michaelis, Jeremy A. Johnson
Abstract
Organic nonlinear optical (NLO) crystals are among the most efficient (>1%) terahertz (THz) radiation generators. However, one of the limitations of using organic NLO crystals is that the unique THz absorptions in each crystal make it difficult to obtain a strong, smooth, and broad emission spectrum. In this work, we combine THz pulses from two complementary crystals, DAST and PNPA, to effectively fill in spectral gaps, creating a smooth spectrum with frequencies out to 5 THz. The combination of pulses also increases the peak-to-peak field strength from 1 MV/cm to 1.9 MV/cm.
Topics & Concepts
Terahertz radiationOpticsMaterials scienceNonlinear opticsCrystal (programming language)WaveformTerahertz spectroscopy and technologyOptoelectronicsTerahertz gapRadiationTerahertz metamaterialsPhysicsLaserFar-infrared laserComputer scienceProgramming languageQuantum mechanicsVoltageTerahertz technology and applicationsAcoustic Wave Resonator TechnologiesSpectroscopy and Laser Applications