Abstract: A laser system may include a controller configured to direct a plurality of temporally spaced-apart electrical pulses to a device that optically pumps a lasing medium, and a lasing medium configured to output a quasi-continuous laser pulse in response to the optical pumping. The plurality of temporally spaced-apart electrical pulses may include (a) a first electrical pulse configured to excite the lasing medium to an energy level below a lasing threshold of the lasing medium, and (b) multiple second electrical pulses following the first electrical pulse. The quasi-continuous laser pulse is output in response to the multiple second electrical pulses.

Abstract: A moveable guide carriage forms a linear roller bearing on a guide rail. The guide carriage has four endlessly revolving rows of rollers that are guided in respective roller tracks. The guide carriage has a central main body with two end sides that are spaced apart from each other in the direction of movement. A respective end cap is arranged on the two end sides of the main body. The rows of rollers are deflected in the end caps. At least one of the end caps includes a lubricant input on an outer side. The guide carriage includes a branching lubricant line between the lubricant input and the four rows of rollers or the four roller tracks. At least two internal nonreturn valves are provided in the lubricant line in the interior of the end cap or between the end cap and the main body.

Abstract: A guide carriage can be moved on a guide rail to form a linear roller bearing. The guide carriage has four endlessly revolving rows of rollers which are guided in respective roller tracks. The guide carriage has a central main body, which has two end sides that are spaced apart from each other in the direction of movement. On the two end sides of the main body is arranged a respective end cap bearing directly thereagainst or spaced apart therefrom. The rows of rollers are deflected in the end caps. A branching lubricant line is provided between a lubricant input, which is provided on an outer side of at least one end cap, and the four rows of rollers or the four roller tracks. Two or four internal nonreturn valves having a respective closing body, the opening direction of which nonreturn valves corresponds to the conveying direction, are provided in the lubricant line in the interior of the end cap or between the end cap and the main body.