Open AccessHigh peak power, sub-ps green emission in a passively mode locked W-cavity VECSEL
Author(s) -
Jason T. Meyer,
Michal L. Lukowski,
Chris Hessenius,
E. M. Wright,
Mahmoud Fallahi
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.384439
Subject(s) - lithium triborate , optics , materials science , laser , crystal (programming language) , optoelectronics , mode locking , second harmonic generation , physics , computer science , programming language
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.