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We report a distributed Bragg reflector-free semiconductor disc laser which emits 10 W continuous wave output power at a wavelength of 1007 nm when pumped with 40 W at 808 nm, focused into a 230 μm diameter spot on the gain chip. By introducing a birefringent filter plate in the laser cavity the wavelength could be tuned from 995 to 1020 nm. The laser consisted of a gain chip located at the beam waist...
Semiconductor disk lasers (SDLs), also known as vertical-external surface-emitting-lasers (VECSELs) are an ideal choice to reach high output powers. Further advantageous characteristics [1] of this laser type, as e.g. superior beam quality with a radial symmetric TEM00 beam profile, are provided by the external cavity. A further big advantage of VECSELs is given by the possibility of bandgap engineering...
Since the first realization of a semiconductor disk laser in 1997 [1], progress in increasing continuous-wave output power as well as accessing of many different wavelength regions have been made [2]. With such laser systems, bandgap engineering and power scalability come along with near-diffraction-limited beam quality in a TEM00 beam profile obtained by the external cavity. Furthermore, with the...
In recent years, vertical external cavity surface-emitting lasers (VECSELs) became an important category of power-scalable semiconductor lasers in a wide range of applications. Examples can be found in many fields of work as biophotonics, television or projectors, spectroscopy or lithography. Using external cavities and optical excitation, VECSELs exhibit high continuous-wave (cw) output power and...
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