Hybrid SESAMs for high-repetition rate mode-locked VECSELs

Ricky Gibson, Simon P. Tsaoussis, Joshua Rollag, Catherine Nguyen, David Follman, Garrett D. Cole, Sadhvikas Addamane, Jerome V. Moloney, R. Jason Jones

Research output: Chapter in Book/Report/Conference proceedingConference contribution


A mode-locked VECSEL is reported using a novel hybrid semiconductor saturable absorber mirror (SESAM) consisting of a semiconductor absorber region bonded to a curved dielectric partial reflector. The hybrid SESAM is realized by direct bonding of the saturable absorber to a commercially available ultrafast output coupler, nominally 99.4% reflectivity and GDD of ≤ |20 fs2| with a radius of curvature of 10 cm. In a linear cavity where the curved output coupler is the hybrid SESAM, a pulse-width of 410 femtoseconds is achieved at a repetition rate of 4.2 GHz for a VECSEL operating at a wavelength of 1030 nm.

Original languageEnglish (US)
Title of host publicationVertical External Cavity Surface Emitting Lasers (VECSELs) XII
EditorsRobert G. Bedford
ISBN (Electronic)9781510659131
StatePublished - 2023
EventVertical External Cavity Surface Emitting Lasers (VECSELs) XII 2023 - San Francisco, United States
Duration: Jan 31 2023 → …

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceVertical External Cavity Surface Emitting Lasers (VECSELs) XII 2023
Country/TerritoryUnited States
CitySan Francisco
Period1/31/23 → …


  • direct bonding
  • hybrid SESAM
  • mode-locked laser
  • saturable absorber

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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