High peak power, sub-ps green emission in a passively mode locked W-cavity VECSEL

Jason T. Meyer, Michal L. Lukowski, Chris Hessenius, Ewan M. Wright, Mahmoud Fallahi

Research output: Contribution to journalArticle


We report on the experimental results of a passively mode-locked vertical external cavity surface emitting laser (VECSEL), implemented in a W-cavity configuration, using a lithium triborate (LBO) crystal for intra-cavity second harmonic generation (SHG) at 528 nm. The W-cavity configuration allows separation of the crystal from the semiconductor saturable absorber mirror (SESAM), enabling independent control over the Gaussian beam sizes at the crystal, chip, and SESAM. This optimized cavity demonstrated a second harmonic pulse width of ∼760 fs at a frequency of 465 MHz and 230 mW average output power, resulting in a peak pulse power of 580 W.

Original languageEnglish (US)
Pages (from-to)5794-5800
Number of pages7
JournalOptics Express
Issue number4
Publication statusPublished - Feb 17 2020


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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