Various THz-radiation sources have been intensively studied in the past, including photoconductive switches irradiated with ultrashort optical pulses. The average power of optical short-pulse excited THz radiation sources was at the microwatt level, mostly limited by the electric break-down of the photoconductive antennas. An intense, compact, and simple light source is required for applications in sensing or imaging. Zhang et al. (1993) reported on a compact THz-radiation source consisting of a biased photoconductive antenna and a mode-locked fiber laser as an excitation source. They also reported the quadratic dependence of laser induced THz-radiation on the magnetic field. We have also demonstrated strong enhancement of THz-radiation power with a magnetic field with the use of an InAs semiconductor instead of GaAs. The advantage of the magnetic field enhancement scheme is flexibility of the geometry and easier scalability of the system. In the presentation, we report on a compact THz-radiation source consisting of a fiber femtosecond laser and a 2-T newly-designed permanent magnet.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A compact THz-radiation source consisting of a bulk semiconductor, a mode-locked fiber laser, and a 2-T permanent magnet


    Contributors:
    Ono, S. (author) / Ohtake, H. (author) / Izumida, S. (author) / Zhenlin Liu, (author) / Kurihara, K. (author) / Sarukura, N. (author) / Nishizawa, S. (author) / Nakanishi, A. (author)


    Publication date :

    1999-01-01


    Size :

    113825 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Tunable all-optically mode-locked semiconductor fiber ring laser

    Giannone, D. / Kinet, D. / Peigne, G. et al. | IEEE | 2005


    Compact Permanent-Magnet Machines

    Chalmers, B.J. | Online Contents | 1997


    Actively mode-locked fiber laser with semiconductor all-optical modulator

    Rusu, M. / Herda, R. / VIainionpaa, A. et al. | IEEE | 2005



    Passively mode-locked multi-mode fiber laser

    Hofer, M. / Fermann, M.E. / Galvanauskas, A. et al. | IEEE | 1999