Abstract: Method for generating a series of laser pulses with a laser assembly, the laser assembly at least having two reflecting members, a laser medium and an electro-optical modulator are disclosed. The laser assembly operates in a light amplifying mode, and runs a pulse extraction sequence. The pulse extraction sequence is run by applying a defined voltage change with reference to the amplification voltage, wherein changing of the voltage is adjusted such that at least one intermediate switching state is generated on side of the electro-optical modulator, the intermediate switching state providing a particular change of polarisation of the amplified laser radiation by the electro-optical modulator, such that a final switching state is generated on side of the electro-optical modulator by applying a final extraction voltage at the end of the time period.

Abstract: The invention bases on the idea to, in an optical resonator with a prism (1) as reflecting end element, equip the prism (1) with a focusing effect. The focusing effect can e.g. come about by means of a curved surface (12) or by means of an internal lens effect. By introducing the focusing effect the angular dispersion is considerably increased if the resonator parameters are chosen suitably; thus a high negative dispersion of the group velocity or a strong spatial mode or wavelength separation respectively on a short path length is made possible. In an embodiment the optical resonator is restricted by a first reflecting end element (1) and a second reflecting end element (3). The first reflecting end element (1) is designed as a focusing solid body with a first, plane optical surface (11) and a second optical surface (12), whereby the second optical surface (12) is reflective. The resonator further contains a further focusing element (4).