Abstract
We have investigated ultrafast carrier dynamics in a semiconductor crescent-shaped quantum wire by terahertz (THz) wave time-domain spectroscopy (THz-TDS). THz waves are generated by the motion of photoexcited carriers in semiconductor nanostructures, so that the time evolution of coherent polarization in the nanostructures is obtained by integration of observed THz waves. THz waves were generated by ultrashort optical pulse excitation of the quantum wire and detected using a free-space electrooptic (EO) sampling method. The dephasing time of coherent polarization in the quantum wire was varied by increasing the excitation energy. It was estimated that the dephasing time of coherent polarization is 300 fs at an excitation energy of 1.534 eV.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
