Publication Date:
2018-10-13
Description:
Author(s): Osamu Kojima, Yuki Tarui, Hideaki Shimazu, Takashi Kita, Avan Majeed, Pavlo Ivanov, Edmund Clarke, and Richard Hogg Producing and controlling light at terahertz frequencies continues to be a major research theme. Being able to tune a continuous narrow-linewidth THz wave over a wide frequency range enables important applications, such as high-resolution spectroscopy and ultrafast optical communication. The authors achieve such tuning of the THz wave generated by difference frequency mixing using excitons confined in a semiconductor quantum well. Using exciton optical nonlinearity enables wide frequency tunability without the intensity drop caused by phonon scattering. This approach is bound to impact the engineering of terahertz wave fields. [Phys. Rev. Applied 10, 044035] Published Fri Oct 12, 2018
Electronic ISSN:
2331-7019
Topics:
Physics
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