Terahertz optical properties and birefringence in single crystal vanadium doped (100) β-Ga<sub>2</sub>O<sub>3</sub>
Ajinkya Punjal, Shraddha Choudhary, Maneesha Narayanan, Dhanashree Chemate, Ruta Kulkarni, A. Thamizhavel, Arnab Bhattacharya, S. S. Prabhu
Abstract
We report the terahertz optical properties of vanadium doped (100) β-Ga 2 O 3 using terahertz time-domain spectroscopy (THz-TDS). The V-doped β-Ga 2 O 3 crystal shows strong birefringence in the 0.2-2.4 THz range. Further, phase retardation by the V-doped β-Ga 2 O 3 has been measured over the whole THz range by terahertz time-domain polarimetry (THz-TDP). It is observed that the V-doped β-Ga 2 O 3 crystal behaves both as a quarter waveplate (QWP) at 0.38, 1.08, 1.71, 2.28 THz, and a half waveplate (HWP) at 0.74 and 1.94 THz, respectively.
Topics & Concepts
Terahertz radiationBirefringenceMaterials scienceOpticsWaveplateTerahertz spectroscopy and technologyDopingCrystal (programming language)Refractive indexOptoelectronicsPhysicsLaserProgramming languageComputer scienceGa2O3 and related materialsLuminescence Properties of Advanced MaterialsGaN-based semiconductor devices and materials