Abstract: The invention belongs to the field of lasers, more precisely to the field of constructional details of laser devices and laser devices for controlling intensity, frequency, length, polarization or direction of emitted rays. The present invention is an improved gain switched fiber laser, which enables changes of repetition frequency in a large range and which, at the same time, maintains a constant peak power and duration of generated laser pulses. The essence of the laser according to the invention is the pump system which is coupled to an oscillator and pumps the oscillator as well as the amplifier. The pump system comprises a primary and a secondary pump module, each at least with one pump laser diode, wherein the primary module generates short pump pulses and wherein the primary and secondary pump module operate at different peak powers.

Abstract: The present invention belongs to the field of instruments for examination and treatment of human eyes. The invention relates to an acoustic diverter, which is used during laser treatment of eyes based on photodisruption within the eye, such as capsulotomy, iridotomy and vitreolysis. The present invention achieves the task of limiting or preventing acoustic waves to be focused in the eye so that the threshold negative pressures for injuries is not reached by providing an acoustic diverter, which has a geometry of an anterior surface concave, flat or slightly convex such that it prevents or decreases refocusing of acoustic waves back into the eye, and wherein the acoustic diverter is made of any biocompatible and sterilisable material transparent for the visible and near IR light. The preferred material has acoustic impedance between 1.4 to 1.7×106 kg/(m2·s) and/or attenuation coefficient more than 1 cm?1 at 10 MHz in order to ensure improved dispersion or attenuation of acoustic waves.

Abstract: A method for transferring a printing substance provided as a coating on a carrier onto a substrate by laser radiation from a laser beam source that comprises an amplifier and that has an output power includes initiating a transfer process at the start of an active phase during a first time period by a temporary increase in the output power above an upper power threshold of the laser radiation, and adjusting the output power during a second time period of the active phase following the first time period, wherein the output power is adjusted during the second time period constantly in the range between the upper power threshold and a lower power threshold. The laser radiation and the carrier are moved relative to one another and the output power of the laser beam source is time modulated.

Abstract: A method for transferring a printing substance provided as a coating on a carrier onto a substrate by laser radiation from a laser beam source that comprises an amplifier and that has an output power includes initiating a transfer process at the start of an active phase during a first time period by a temporary increase in the output power above an upper power threshold of the laser radiation, and adjusting the output power during a second time period of the active phase following the first time period, wherein the output power is adjusted during the second time period constantly in the range between the upper power threshold and a lower power threshold. The laser radiation and the carrier are moved relative to one another and the output power of the laser beam source is time modulated.