Abstract: Micro-leaks are detected by means of a sniffer device including, in an original manner, a flat suction capsule (11) with divergent channels where the flow is regular, a resonant optical cavity (15) as a means of detection and a pump (16) with a low flow rate, which is insufficient to create a vacuum which would be required with other means of detection. Much fainter micro-leaks can be detected.

Abstract: The invention relates to a method for the laser ablation of a surface located in a first clean area, said ablation using a laser beam which is emitted by a cavity that is associated with pumping means for supplying electromagnetic radiation to the cavity. The inventive method is characterized in that the cavity is associated with pumping means by means of an optical fibre that transmits the electromagnetic radiation such that the pumping means are maintained outside the above-mentioned cleaning area. According to the invention, the wavelength of the pump radiation is slightly attenuated in the fibre, said fibre having a length of more than 10 meters.

Abstract: Micro-leaks are detected by means of a sniffer device including, in an original manner, a flat suction capsule (11) with divergent channels where the flow is regular, a resonant optical cavity (15) as a means of detection and a pump (16) with a low flow rate, which is insufficient to create a vacuum which would be required with other means of detection. Much fainter micro-leaks can be detected.

Abstract: A high peak power optical rest and combination of plural of the resonators, particularly to excite a light generator in the extreme ultraviolet. An optical resonator with a solid state amplifying medium is pulsed and pumped by diodes operating continuously. The optical resonator includes at least two laser rods, at least one mechanism to trigger optical pulses, the triggering mechanism located in a part of a cavity in which the laser beam diverges least, and first and second mirrors that delimit the cavity, the first mirror being highly reflecting and the second mirror being partly reflecting.