Patents

A laser pulse spectral broadening apparatus (100) for spectral broadening of laser pulses (1A) comprises a multi-pass cell device (10) with multiple mirror elements, which are arranged for providing a beam path (2) extending from an input section to an output section of the multi-pass cell device (10), wherein the mirror elements comprise focussing mirror elements having a concave curvature, and with a pulse spectral broadening device (20) including at least one optical non-linear medium (21) being arranged in the beam path (2) for spectral broadening of the laser pulses passing the pulse spectral broadening device (20), wherein the mirror elements have a configuration providing multiple passages of the beam path (2) through the pulse spectral broadening device (20), wherein the mirror elements further comprise folding mirror elements having a close to plane shape, wherein the absolute value of the radius of curvature of the folding mirror elements (11, 12) is larger than 10 m, the folding mirror elements span a folded collimation portion (3) of the beam path (2) and the beam path (2) has a degree of collimation along the whole collimation portion (3), such that an accumulated collimation portion Gouy phase parameter Gcol in the collimation portion (3) is π/15<Gcol<π//2, and the mirror elements are arranged such that an accumulated half round trip Gouy phase parameter Ghrt per half round trip through the multi-pass cell device (10) differs from n*π//2, with n being a natural number. Furthermore, a laser source apparatus and a method of creating laser pulses (1B), employing the laser pulse spectral broadening apparatus (100), are described..

An artificial saturable absorber uses additive pulse mode-locking to enable pulse operation of an on-chip laser operationFour different artificial saturable absorbers are disclosed. The first includes an integrated coupler, two arms each containing someimplementation of the end-reflector, and a phase bias element in one arm. [...]

The invention describes classes of robust fiber laser systems usable as pulse sources for Nd: or Yb: based regenerative amplifiers intended for industrial settings. The invention modifies adapts and incorporates several recent advances in FCPA systems to use as the input source for this new class of regenerative amplifier..

The multi-crystal analyzer detector system has two beam limiting devices, two collimators (2,3) and detectors, which are connected with evaluation devices. The beam limiting device divides an overall beam into individual beams and absorbs the scattered radiation. [...]

Hauptanspruch: Verfahren zur Bestimmung der Intensität von hochenergetischer, gepulster VUV- oder EUV-Strahlung mit folgenden Verfahrensschritten: - Durchstrahlung einer mit Gas bei einem definierten Druck <10^-4 hPa gefüllten Wechselwirkungszone (3) in eienr definierten Strahlrichtugn 1 zur Bildung von Photoelektronen und Photoionen,- Beschleunigung der Photoionen und Photoelektronen in einem definierten Winkel zur Strahlrichtung (1) durch ein elektrisches Feld derart, dass dadurch keine Ladungsvervielfachung entsteht, - seperate Detektion der beschleunigten Photoelektronen und der beschleunigten Photoionen und - Bildung eines gemittelten Detektionssignals für die generierten Photoionen als kalibrierbares Signal und eines pulsaufgelösten Detektionssignals für die generierten Photoelektronen

Verfahren zur Herstellung einer mehrschichtigen magnetoelektronischen Vorrichtung sowie magnetoelektronische Vorrichtung