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Related Experiment Video

Updated: Apr 6, 2026

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
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Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

Published on: July 2, 2012

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Note: Improved technique for ultrashort lasers pulse width stabilization.

Dmitriy Shelestov1, Vladimir Lazarev1, Valeriy Karasik1

  • 1Bauman Moscow State Technical University, 5/1 2nd Baumanskaya, Moscow 105005, Russia.

The Review of Scientific Instruments
|August 3, 2015
PubMed
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We developed a new method using second harmonic generation (SHG) to stabilize ultrashort laser pulses. This technique achieves high accuracy for picosecond fiber lasers, improving pulse width control significantly.

Area of Science:

  • Laser Physics
  • Nonlinear Optics
  • Optical Engineering

Background:

  • Precise control of ultrashort laser pulse width is crucial for many scientific applications.
  • Existing pulse width stabilization methods may lack sufficient accuracy or applicability to specific laser types.

Purpose of the Study:

  • To develop an improved and highly accurate method for pulse width stabilization.
  • To demonstrate the effectiveness of the method on a picosecond Yb-doped fiber laser.

Main Methods:

  • Utilized the second harmonic generation (SHG) technique, analyzing the relationship between pulse width, input intensity, and SHG intensity.
  • Developed a novel processing algorithm to enhance the accuracy of the SHG-based method.
  • Applied the developed method to stabilize the pulse width of a picosecond Yb-doped fiber laser.

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Last Updated: Apr 6, 2026

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
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Main Results:

  • Achieved a pulse width stabilization accuracy of 1.2% using the novel processing algorithm.
  • Successfully demonstrated pulse width stabilization for a picosecond Yb-doped fiber laser with pulse widths of 10-14 ps.
  • Obtained an absolute error of less than 200 fs for pulse width stabilization, a first for this type of laser.

Conclusions:

  • The developed SHG-based method with the novel algorithm offers a significant improvement in pulse width stabilization accuracy.
  • This technique provides a robust solution for precise pulse width control in picosecond fiber lasers.
  • The demonstrated low absolute error opens possibilities for advanced applications requiring highly stable ultrashort pulses.