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Compression of picosecond pulses from diode lasers using a modified grating-pair compressor.

M Kuznetsov, J M Wiesenfeld, L R Radzihovsky

    Optics Letters
    |September 18, 2009
    PubMed
    Summary

    Optical pulses from gain-switched diode lasers were compressed to enhance their speed. This diode-laser pulse compression achieved a factor of ~5, improving pulse duration from 20-30 psec to 5-7 psec.

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    Area of Science:

    • Optics and Photonics
    • Laser Technology

    Background:

    • Gain-switched diode lasers are crucial for generating optical pulses.
    • Pulse duration is a key parameter affecting laser performance and applications.

    Purpose of the Study:

    • To investigate the compression of optical pulses from gain-switched diode lasers.
    • To determine the effectiveness of a grating-pair compressor with an internal telescope for pulse shortening.

    Main Methods:

    • Utilized a grating-pair compressor incorporating an internal telescope.
    • Employed optical pulses generated from gain-switched diode lasers.
    • Analyzed pulse duration before and after compression.

    Main Results:

    • Achieved significant pulse compression, reducing pulse duration from 20-30 picoseconds (psec) to 5-7 psec.

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  • Demonstrated a maximum pulse compression factor of approximately 5.
  • Validated that diode-laser pulse compression can be accurately modeled using Gaussian pulses with excess bandwidth transmitted through a dispersive system.

    • Conclusions:

    • The implemented grating-pair compressor effectively shortens optical pulses from gain-switched diode lasers.
    • The results confirm the feasibility of achieving substantial pulse compression for diode laser systems.
    • The study provides a validated model for understanding and predicting diode-laser pulse compression performance.