Real-Time Exploration on Buildup Dynamics of Diode-Pumped Passively Mode-Locked Nd:YVO4 Laser with SESAM

Pin Wen Cheng, Yu Hsin Hsu, Xiu Wei Chang, Hsing Chih Liang, Yung Fu Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The buildup dynamics of diode-pumped passively mode-locked solid-state laser is thoroughly explored using the real-time measurement with temporal sampling rate of up to 40 GHz. A concise cavity is developed to ensure the transient dynamics purely arising from the gain medium and saturable absorber. Experimental results reveal that the laser output in the buildup process exhibits numerous passively Q-switched pulses followed with a damped relaxation oscillation prior to the stable mode locking. Furthermore, it is confirmed that the laser output has already displayed single clean mode-locked pulses inside the first several Q-switched envelopes before stepping into the stage of relaxation oscillation. The present real-time exploration is expected to provide important information for practical applications with temporal modulation of the pump intensity.

Original languageEnglish
Article number826
JournalPhotonics
Volume10
Issue number7
DOIs
StatePublished - Jul 2023

Keywords

  • buildup dynamics
  • diode-pumped
  • mode-locked
  • relaxation oscillation
  • solid-state laser

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