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Related Experiment Videos

High-power third-harmonic flat pulse laser generation.

S Cialdi1, M Petrarca, C Vicario

  • 1Istituto Nazionale di Fisica Nucleare, Milan, Italy.

Optics Letters
|September 14, 2006
PubMed
Summary
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Researchers generated a high-power ultraviolet laser pulse shaped by harmonic conversions. The pulse

Area of Science:

  • Nonlinear optics
  • Ultrafast lasers
  • Laser pulse shaping

Background:

  • High-power laser generation is crucial for various scientific applications.
  • Controlling the temporal shape of laser pulses allows for precise experimental manipulation.
  • Ultraviolet (UV) lasers offer unique properties for material processing and spectroscopy.

Purpose of the Study:

  • To generate a high-power laser pulse at 266 nm with a predefined longitudinal intensity profile.
  • To investigate the effects of second- and third-harmonic conversions on UV pulse shaping.
  • To demonstrate a method for obtaining the pulse intensity profile through spectral measurements.

Main Methods:

  • Utilizing second- and third-harmonic generation to modify a fundamental laser pulse.

Related Experiment Videos

  • Measuring the temporal shape modifications of the generated UV pulse.
  • Performing spectral single-shot measurements to characterize the pulse intensity profile.

    • Main Results:

    • Successfully generated a high-power 266 nm laser pulse with controlled longitudinal shaping.
    • Observed pulse shape modifications consistent with theoretical predictions for harmonic conversions.
    • Demonstrated that UV temporal shape is influenced by fundamental pulse chirp and crystal phase-matching.
    • Validated spectral single-shot measurements for reconstructing the pulse intensity profile.

    Conclusions:

    • Second- and third-harmonic conversions are effective for shaping high-power UV laser pulses.
    • The temporal characteristics of the UV pulse can be precisely controlled.
    • Spectral measurements provide a viable method for pulse profile characterization, especially for stretched pulses.