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Three years after the first realization [1] of the vertical external-cavity surface-emitting laser (VECSEL), passive mode locking by inserting a semiconductor saturable absorber mirror (SESAM) into the cavity was presented [2]. Besides the advantageous properties in continuous wave operation such as a near-diffraction limited beam profile and the possibility of bandgap engineering, SESAM mode-locked...
Three-dimensional solitons are highly sought after objects in nonlinear science. In nonlinear photonics they correspond to light bullets, but their experimental observation as long-term stable structures remains elusive in spite of impressive advances [1]. Broad-area vertical-cavity surface-emitting lasers (VCSELs) combine a large Fresnel number with a high nonlinearity and fast time scales. Stationary...
Ti:sapphire lasers are used in many applications such as nonlinear-microscopy. However, Ti-sapphire laser systems are typically expensive and have a large form factor which consequently limits the availability and compactness of applications requiring these systems. In applications where the benefits of a smaller footprint outweigh the drawbacks of a reduced spectral flexibility, mode-locked Vertical-External-Cavity...
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