Recent advances of InGaSb SESAMs in the 2 to 2.4-µm wavelength regime

Jonas Heidrich; Marco Gaulke; B. Ozgur Alaydin; Matthias Golling; Ajanta Barh; Ursula Keller

doi:10.1117/12.2609693

1 April 2022 Recent advances of InGaSb SESAMs in the 2 to 2.4-µm wavelength regime

Jonas Heidrich, Marco Gaulke, B. Ozgur Alaydin, Matthias Golling, Ajanta Barh, Ursula Keller

Proceedings Volume PC11984, Vertical External Cavity Surface Emitting Lasers (VECSELs) XI; PC1198407 (2022) https://doi.org/10.1117/12.2609693
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

We present the characterization under intracavity conditions of semiconductor saturable absorber mirrors (SESAMs) operating from 2 – 2.4 µm. The precise nonlinear reflectivity and recovery time measurement setups reveal excellent parameters of our in-house grown 2.05 and 2.4 µm SESAMs. Low saturation fluences around 4 µJ/cm2, percent range modulation depth, extremely low non-saturable losses and fast recovery within a few tens of picoseconds have been measured for all SESAMs. Using these SESAMs output power records in modelocking of vertical external-cavity surface-emitting lasers (VECSELs), thin-disk Ho:YAG lasers at 2 µm wavelength and Cr:ZnS lasers at 2.4 µm are achieved.

Conference Presentation

Citation Download Citation

Jonas Heidrich, Marco Gaulke, B. Ozgur Alaydin, Matthias Golling, Ajanta Barh, and Ursula Keller "Recent advances of InGaSb SESAMs in the 2 to 2.4-µm wavelength regime", Proc. SPIE PC11984, Vertical External Cavity Surface Emitting Lasers (VECSELs) XI, PC1198407 (1 April 2022); https://doi.org/10.1117/12.2609693

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