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1 April 2022 Progress of red-emitting mode-locked VECSELs
Marius Großmann, Ana Cutuk, Michael Jetter, Peter Michler
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Proceedings Volume PC11984, Vertical External Cavity Surface Emitting Lasers (VECSELs) XI; PC1198405 (2022) https://doi.org/10.1117/12.2608436
Event: SPIE LASE, 2022, San Francisco, California, United States
Abstract
For wavelengths deviating from 1µm, a SESAM can be limited by the underlying DBR design. Using substrate-removal, it is possible to isolate the active region and circumvent restrictions due to a DBR. Only lately, the dynamics of SESAM mode-locked VECSELs, producing different multi-pulse emission, was investigated by several groups and motivated numerical modeling of mode-locking VECSELs. We present the fabrication, characterization and mode-locking of our red-emitting AlGaInP active regions. This includes a comparison of mode-locking dynamics of DBR-free saturable absorber and SESAM-based mode-locking approaches in the red spectral range and the nonlinear reflectivity of a set of GaInP QW SESAMs.
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Marius Großmann, Ana Cutuk, Michael Jetter, and Peter Michler "Progress of red-emitting mode-locked VECSELs", Proc. SPIE PC11984, Vertical External Cavity Surface Emitting Lasers (VECSELs) XI, PC1198405 (1 April 2022); https://doi.org/10.1117/12.2608436
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KEYWORDS
Mode locking
Aluminium gallium indium phosphide
Semiconductors
Numerical modeling
Picosecond phenomena
Quantum wells
Reflectivity
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