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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
10:17

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Published on: July 12, 2017

Diode-pumped mode-locked Yb:YAG ceramic laser.

Hiroaki Yoshioka1, Shinki Nakamura, Takayo Ogawa

  • 1Department of Media and Telecommunications, Faculty of Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan.

Optics Express
|May 26, 2009
PubMed
Summary

This study demonstrates the first diode-pumped mode-locked Ytterbium-doped Yttrium Aluminum Garnet (Yb:YAG) ceramic laser. It achieved ultrashort femtosecond pulses with high average power, paving the way for advanced laser applications.

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Area of Science:

  • Laser Physics
  • Materials Science
  • Photonics

Background:

  • Development of compact and efficient ultrashort pulse lasers is crucial for various scientific and industrial applications.
  • Ytterbium-doped YAG (Yb:YAG) ceramics offer advantages like high thermal conductivity and scalability for laser systems.
  • Passively mode-locked lasers generate ultrashort optical pulses through self-starting mechanisms.

Purpose of the Study:

  • To demonstrate a diode-pumped passively mode-locked Yb:YAG ceramic laser.
  • To investigate the performance of such a laser in terms of pulse duration and average power.
  • To establish a new benchmark for diode-pumped Yb:YAG ceramic laser technology.

Main Methods:

  • Utilized a diode-pumped configuration for efficient energy transfer.
  • Employed a passive mode-locking technique to generate femtosecond pulses.
  • Experimented with different output couplers (1% and 0.1%) to optimize laser performance.
  • Characterized the output pulses in terms of duration, average power, and center wavelength.

Main Results:

  • Achieved 417 fs and 286 fs pulses with average powers of 250 mW and 25 mW at 1030 nm using 1% and 0.1% output couplers, respectively.
  • Obtained 233 fs pulses with an average power of 20 mW at a center wavelength of 1048.3 nm using a 0.1% output coupler.
  • Successfully demonstrated the first diode-pumped mode-locked Yb:YAG ceramic laser.

Conclusions:

  • The diode-pumped passively mode-locked Yb:YAG ceramic laser is a viable and high-performance system.
  • The results highlight the potential of Yb:YAG ceramics for generating ultrashort, high-power laser pulses.
  • This work represents a significant advancement in the field of ultrafast solid-state lasers.