Ultrashort pulse generation by semiconductor mode-locked lasers at 760 nm

Huolei Wang, Liang Kong, Adam Forrest, David Bajek, Stephanie E. Haggett, Xiaoling Wang, Bifeng Cui, Jiaoqing Pan, Ying Ding, Maria Ana Cataluna (Lead / Corresponding author)

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    We demonstrate the first semiconductor mode-locked lasers for ultrashort pulse generation at the 760 nm waveband. Multi-section laser diodes based on an AlGaAs multi-quantum-well structure were passively mode-locked, resulting in the generation of pulses at around 766 nm, with pulse durations down to ∼4 ps, at pulse repetition rates of 19.4 GHz or 23.2 GHz (with different laser cavity lengths of 1.8 mm and 1.5 mm, respectively). The influence of the bias conditions on the mode-locking characteristics was investigated for these new lasers, revealing trends which can be ascribed to the interplay of dynamical processes in the saturable absorber and gain sections. It was also found that the front facet reflectivity played a key role in the stability of mode-locking and the occurrence of self-pulsations. These lasers hold significant promise as light sources for multi-photon biomedical imaging, as well as in other applications such as frequency conversion into the ultraviolet and radio-over-fibre communications. 

    Original languageEnglish
    Pages (from-to)25940-25946
    Number of pages7
    JournalOptics Express
    Volume22
    Issue number21
    DOIs
    Publication statusPublished - 20 Oct 2014

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  • Student Theses

    Development of versatile wavelength tunable external cavity quantum dot lasers

    Author: White, S., 2016

    Supervisor: Cataluna, M. (Supervisor) & Lamond, A. (Supervisor)

    Student thesis: Doctoral ThesisDoctor of Philosophy

    High-Speed Optical Sampling Techniques Enabled By Ultrafast Semiconductor Lasers

    Author: Bajek, D. J., 2016

    Supervisor: Cataluna, M. (Supervisor)

    Student thesis: Doctoral ThesisDoctor of Philosophy

    File

    Novel Approaches to Power Scaling In Mode-Locked Laser Diode Based Ultrashort Pulse Sources

    Author: Forrest, A. F., 2018

    Supervisor: Cataluna, M. (Supervisor) & Weijer, C. (Supervisor)

    Student thesis: Doctoral ThesisDoctor of Philosophy

    Cite this

    Wang, H., Kong, L., Forrest, A., Bajek, D., Haggett, S. E., Wang, X., Cui, B., Pan, J., Ding, Y., & Cataluna, M. A. (2014). Ultrashort pulse generation by semiconductor mode-locked lasers at 760 nm. Optics Express, 22(21), 25940-25946. https://doi.org/10.1364/OE.22.025940