Browsing by Author "Barh, Ajanta"

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Full optical SESAM characterization methods in the 1.9 to 3-µm wavelength regime

Alaydin, Behçet Özgür; Keller, Ursula; Barh, Ajanta; Gaulke, Marco; Golling, Matthias; Heidrich, Jonas (01/03/2021)

Semiconductor saturable absorber mirrors (SESAMs) are widely used for modelocking of various ultrafast lasers. The growing interest for SESAM-modelocked lasers in the short-wave infrared and mid-infrared regime requires ...
High average output power from a backside-cooled 2-µm InGaSb VECSEL with full gain characterization

Alaydin, Behçet Özgür; Keller, Ursula; Barh, Ajanta; Gaulke, Marco; Golling, Matthias; Heidrich, Jonas (22/11/2021)

We compare the gain and continuous wave lasing properties of two InGaSb-based vertical external cavity surface emitting lasers (InGaSb VECSEL) with different heat management approaches operating at a center wavelength of ...
Watt-level and sub-100-fs self-starting mode-locked 2.4-µm Cr:ZnS oscillator enabled by GaSb-SESAMs

Alaydin, Behçet Özgür; Barh, Ajanta; Keller, Ursula; Golling, Matthias; Heidrich, Jonas; Cristopher, Phillips; Gaulke, Marco (09/02/2021)

Femtosecond lasers with high peak power at wavelengths above 2 µm are of high interest for generating mid-infrared (mid-IR) broadband coherent light for spectroscopic applications. Cr2+-doped ZnS/ZnSe solid-state lasers ...