Measurement and calculation of the orientation dependence of terahertz pulse detection in ZnTe
نویسندگان
چکیده
We have performed measurements and calculations of the efficiency of terahertz (THz) detection in ZnTe as functions of the angle between the THz polarization and the crystal (001) axis of the angle between the THz polarization and the probe-beam polarization. We find that, for angles of 0° and 90° between the probe and THz polarization, the THz detection process is most efficient, whereas the commonly used angle of 45° gives less than optimal results. In addition, we show how the polarization direction of a THz beam can be found if the direction of the crystal (001) axis is known. Our results are valid for ZnTe and other zinc-blende crystals such as GaP. © 2001 Optical Society of America OCIS codes: 300.6270, 190.7110, 320.7130, 190.2620.
منابع مشابه
Generation of 1.5 microJ single-cycle terahertz pulses by optical rectification from a large aperture ZnTe crystal.
We demonstrate the generation muJ-level, single-cycle terahertz pulses by optical rectification from a large-aperture ZnTe single crystal wafer. Energies up to 1.5 muJ per pulse and a spectral range extending to 3 THz were obtained using a 100 Hz Ti:sapphire laser source and a 75-mmdiameter, 0.5-mm-thick, (110) ZnTe crystal, corresponding to an average power of 150 muW and an energy conversion ...
متن کاملSimulation study on cascaded terahertz pulse generation in electro-optic crystals.
We studied cascaded optical rectification processes for intense terahertz (THz) pulse generation in electro-optic crystals using simulations based on one-dimensional coupled propagation equations of THz and optical fields. We found that under ideal conditions of perfect phase matching and no absorption, cascaded optical rectification processes produce intense THz pulses with efficiencies exceed...
متن کاملGeneration and detection of terahertz radiation with multilayered electro-optic polymer films.
We use optical rectification and electro-optic sensing to generate and detect terahertz radiation, using individual and multilayered stacks of electro-optic polymer films. For comparable thickness, the polymer films are more efficient generators and detectors of terahertz radiation than ZnTe crystals.
متن کاملCoherent, broadband midinfrared terahertz beam sensors
The generation of midinfrared pulses through the optical rectification extended the radiation frequency from a few THz to several tens of THz. The coherent measurement of a detection frequency greater than 5 THz was demonstrated using a GaP and a ZnTe electro-optic sensor. This optoelectronic technique opens the door to the midinfrared ~midIR! region for coherent emission spectroscopy, time-dom...
متن کاملGeneration of High Efficient Quasi-Single-Cycle 3 and 6THZ Pulses using Multilayer Structures OH1/SiO2 and DSTMS/SiO2
We propose that high efficient terahertz (THz) multilayer structures are composed of DSTMS/SiO2 and OH1/SiO2 at 3 and 6THz frequencies. We show that the efficiencies of these structures are higher than DAST/SiO2 structure in both of 3 and 6THz frequencies. OH1/SiO2 structure at 6THz has an efficiency as large as 10-1; at 3THz frequency, DSTMS/SiO2 structure has an efficiency as large as 10-...
متن کامل