THz generation by optical rectification of intense near-infrared pulses in organic crystal BNA
Franz Roeder, Mostafa Shalaby, Burgard Beleites, F. Ronneberger, A. Gopal
Abstract
Generation of terahertz radiation by optical rectification of intense near-infrared laser pulses in N-benzyl-2-methyl-4-nitroaniline (BNA) is investigated in detail by carrying out a complete characterization of the terahertz radiation. We studied the scaling of THz yield with pump pulse repetition rate and fluence which enabled us to predict the optimal operating conditions for BNA crystals at room temperature for 800 nm pump wavelength. Furthermore, recording the transmitted laser spectrum allowed us to calculate the nonlinear refractive index of BNA at 800 nm.
Topics & Concepts
Optical rectificationTerahertz radiationMaterials scienceOpticsLaserOptoelectronicsInfraredNonlinear opticsRefractive indexFar-infrared laserRadiationWavelengthPhysicsTerahertz technology and applicationsPhotonic and Optical DevicesSemiconductor Quantum Structures and Devices