THz emission from quantum dot-based THz antennas pumped by a tunable quantum-dot laser diode

R. Leyman, D. Carnegie, K.A. Fedorova, N. Bazieva, S. Schulz, C. Reardon, E. Clarke, E.U. Rafailov

Research output: Chapter in Book/Report/Conference proceedingConference publication

Abstract

The THz optoelectronics field is now maturing and semiconductor-based THz antenna devices are becoming more widely implemented as analytical tools in spectroscopy and imaging. Photoconductive (PC) THz switches/antennas are driven optically typically using either an ultrashort-pulse laser or an optical signal composed of two simultaneous longitudinal wavelengths which are beat together in the PC material at a THz difference frequency. This allows the generation of (photo)carrier pairs which are then captured over ultrashort timescales usually by defects and trapping sites throughout the active material lattice. Defect-implanted PC materials with relatively high bandgap energy are typically used and many parameters such as carrier mobility and PC gain are greatly compromised. This paper demonstrates the implementation of low bandgap energy InAs quantum dots (QDs) embedded in standard crystalline GaAs as both the PC medium and the ultrafast capture mechanism in a PC THz antenna. This semiconductor structure is grown using standard MBE methods and allows the device to be optically driven efficiently at wavelengths up to ~1.3 µm, in this case by a single tunable dual-mode QD diode laser.
Original languageEnglish
Title of host publication2013 Conference on Lasers and Electro-Optics Europe & International Quantum Electronics Conference
Place of PublicationPiscataway, NJ (US)
PublisherIEEE
Number of pages1
ISBN (Print)978-1-4799-0593-5, 978-1-4799-0594-2
DOIs
Publication statusPublished - 2013
Event2013 Conference on Lasers and Electro-Optics Europe / International Quantum Electronics Conference - Munich, Germany
Duration: 12 May 201316 May 2013

Conference

Conference2013 Conference on Lasers and Electro-Optics Europe / International Quantum Electronics Conference
Abbreviated titleCLEO EUROPE/IQEC 2013
CountryGermany
CityMunich
Period12/05/1316/05/13

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  • Research Output

    • 12 Conference publication

    Blue-to-red tunable SHG from a diode-pumped PPKTP waveguide

    Fedorova, K. A., Sokolovskii, G. S., Battle, P. R., Krestnikov, I. L., Livshits, D. A. & Rafailov, E. U., 2013, 2013 Conference on Lasers and Electro-Optics Europe & International Quantum Electronics Conference. Piscataway, NJ (US): IEEE, 1 p.

    Research output: Chapter in Book/Report/Conference proceedingConference publication

  • Control of the properties of micro-structured waveguides in LiNbO3 fabricated by direct femtosecond laser inscription

    Karakuzu, H., Dubov, M. & Boscolo, S., 2013, 2013 Conference on Lasers and Electro-Optics Europe & International Quantum Electronics Conference. Piscataway, NJ (US): IEEE, 1 p. Paper CE_8_3

    Research output: Chapter in Book/Report/Conference proceedingConference publication

    Open Access
    File
  • First order optical differentiator based on an FBG in transmission

    Preciado, M. A., Shu, X., Harper, P. & Sugden, K., 2013, 2013 Conference on Lasers and Electro-Optics Europe & International Quantum Electronics Conference. Piscataway, NJ (US): IEEE, 1 p. paper CI_P_3

    Research output: Chapter in Book/Report/Conference proceedingConference publication

    Open Access
    File
  • Cite this

    Leyman, R., Carnegie, D., Fedorova, K. A., Bazieva, N., Schulz, S., Reardon, C., Clarke, E., & Rafailov, E. U. (2013). THz emission from quantum dot-based THz antennas pumped by a tunable quantum-dot laser diode. In 2013 Conference on Lasers and Electro-Optics Europe & International Quantum Electronics Conference IEEE. https://doi.org/10.1109/CLEOE-IQEC.2013.6800814