Polarization sensitive terahertz time domain spectroscopy
Conference on Lasers and Electro Optics and 2006 Quantum Electronics and Laser Science Conference CLEO QELS 2006 (2006)
Abstract:
We present a terahertz radiation detector that measures both transverse components of a terahertz single cycle's electric field, allowing the study of polarization dependent properties of materials. Measurements of birefringence in quartz are presented. 漏 2006 Optical Society of America.Terahertz emission and lifetime measurements of ion-implanted semiconductors: Experiment and simulation
Conference on Lasers and Electro Optics and 2006 Quantum Electronics and Laser Science Conference CLEO QELS 2006 (2006)
Abstract:
The spectral width of terahertz emission from ion-implanted terahertz emitters increases with ion damage, owing to ultrafast carrier capture. Carrier dynamics simulations reinforce these findings. Optical-pump, terahertz-probe experiments confirm the subpicosecond lifetimes of these materials. 漏 2006 Optical Society of America.Influence of surface passivation on ultrafast carrier dynamics and terahertz radiation generation in GaAs
(2006)
Longitudinal electron bunch profile diagnostics at 45 MeV using coherent Smith-Purcell radiation
Physical Review Special Topics Accelerators and Beams 9:9 (2006)
Abstract:
We have used coherent Smith-Purcell radiation in order to investigate the longitudinal (temporal) profile of the electron bunch at the FELIX facility. Detection of the far-infrared radiation was achieved by a simple and compact experimental arrangement, consisting of an array of 11 room-temperature pyroelectric detectors. Accurate determination of the background radiation, use of high quality optical filters, and an efficient light collection system are essential for this type of experiment. The radiated power is in good agreement with the predictions of the surface current description of this process. It is concluded that 90% of the bunch particles are contained within 5.5 ps, with a temporal profile that could be approximately triangular in shape. 漏 2006 The American Physical Society.Charge trapping in polymer transistors probed by terahertz spectroscopy and scanning probe potentiometry
Applied Physics Letters 89 (2006) 112101 pp3