Abstract
Electro-optic (EO) sampling in zinc blende type crystals (e.g., ZnTe, GaAs) is a common method for the coherent detection of few-cycle terahertz pulses. Via the linear EO effect, the electric field ETHz of the terahertz pulse induces a transient birefringence Δn(ETHz) in the otherwise cubic crystal. This birefringence affects the polarisation state of a copropagating femtosecond laser pulse (probe) through a phase shift "Δφ = 2π Δn d/λ (d the crystal thickness, λ the probe wavelength). The change of the polarisation state as a measure of the terahertz field ETHz may be detected using appropriate optical methods, typically a system consisting of a quarter wave plate, a polarising beam splitter, and a pair of balanced photodetectors.
© 2009 IEEE
PDF ArticleMore Like This
B. Yellampalle, K. Y. Kim, G. Rodriguez, J. H. Glownia, and A. J. Taylor
JWA103 Conference on Lasers and Electro-Optics (CLEO:S&I) 2007
Joel Edouard Nkeck, Xavier Ropagnol, Riad Nechache, and François Blanchard
NpM4D.2 Nonlinear Photonics (NP) 2020
Masahiko Tani, Hideaki Kitahara, Hiroyuki Kato, Masaki Shiihara, Akihiro Esaki, Jessica Afalla, Valynn Mag-usara, Takashi Furuya, Mary Clare Escaño, Kohji Yamamoto, Elmer Estacio, and Michael Bakunov
18p_221B_8 JSAP-OSA Joint Symposia (JSAP) 2018