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Appl. Phys. Lett. 97, 081113 (2010); http://dx.doi.org/10.1063/1.3481674 (3 pages)

Semiconductor optical amplifier-based heterodyning detection for resolving optical terahertz beat-tone signals from passively mode-locked semiconductor lasers

Sylwester Latkowski, Ramón Maldonado-Basilio, Kevin Carney, Josué Parra-Cetina, Séverine Philippe, and Pascal Landais

Research Institute for Networks and Communications Engineering, Dublin City University, Glasnevin, Dublin 9, Ireland

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(Received 11 May 2010; accepted 29 July 2010; published online 26 August 2010)

An all-optical heterodyne approach based on a room-temperature controlled semiconductor optical amplifier (SOA) for measuring the frequency and linewidth of the terahertz beat-tone signal from a passively mode-locked laser is proposed. Under the injection of two external cavity lasers, the SOA acts as a local oscillator at their detuning frequency and also as an optical frequency mixer whose inputs are the self-modulated spectrum of the device under test and the two laser beams. Frequency and linewidth of the intermediate frequency signal (and therefore, the beat-tone signal) are resolved by using a photodiode and an electrical spectrum analyzer.

© 2010 American Institute of Physics

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KEYWORDS and PACS

PACS

  • 42.60.Fc

    Modulation, tuning, and mode locking

  • 42.55.Px

    Semiconductor lasers; laser diodes

  • 06.30.Ft

    Time and frequency

  • 07.57.Pt

    Submillimeter wave, microwave and radiowave spectrometers; magnetic resonance spectrometers, auxiliary equipment, and techniques

  • 42.60.Da

    Resonators, cavities, amplifiers, arrays, and rings

  • 42.60.Jf

    Beam characteristics: profile, intensity, and power; spatial pattern formation

ARTICLE DATA

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

For access to fully linked references, you need to log in.
    P. H. Siegel, Transactions on Microwave Theory and Techniques 50, 910 (2002)APPLAB000084000018003586000001.

    S. Hoffmann, M. Hofmann, E. Bründermann, M. Havenith, M. Matus, J. V. Moloney, A. S. Moskalenko, M. Kira, S. W. Koch, S. Saito, and K. Sakai, Appl. Phys. Lett. 84, 3585 (2004)APPLAB000084000018003585000001.

    S. Latkowski, F. Surre, and P. Landais, Appl. Phys. Lett. 92, 081109 (2008)APPLAB000092000008081109000001.

    S. Latkowski, F. Surre, R. Maldonado-Basilio, and P. Landais, Appl. Phys. Lett. 93, 241110 (2008)APPLAB000093000024241110000001.

    S. Latkowski, J. Parra-Cetina, R. Maldonado-Basilio, P. Landais, G. Ducournau, A. Beck, E. Peytavit, T. Akalin, and J. -F. Lampin, Appl. Phys. Lett. 96, 241106 (2010)APPLAB000096000024241106000001.


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