2009/07/31 by Matthias C. Hoffmann, Nathaniel C. Brandt, Harold Y. Hwang +2
Engineering · Physics and Astronomy · #Birefringence #Electric field #Kerr effect #Laser-Matter Interactions and Applications #Polarization (electrochemistry) #SIGNAL (programming language) #Spectroscopy and Quantum Chemical Studies #Terahertz gap #Terahertz radiation #Terahertz spectroscopy and technology #Terahertz technology and applications #cond-mat.other
paper · pdf · doi:10.1063/1.3271520
Submitted to Appl. Phys. Lett. July 29 2009
arxiv created 2009/10/25 · openalex publication_date 2009/12/07 · arxiv updated 2015/05/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We have observed optical birefringence in liquids induced by single-cycle terahertz pulses with field strengths exceeding 100 kV/cm. The induced change in polarization is proportional to the square of the terahertz electric field. The time-dependent terahertz Kerr signal is composed of a fast electronic response that follows the individual cycles of the electric field and a slow exponential response associated with molecular orientation.