摘要:
Offenbart wird ein optisches System (200) für eine Lithographieanlage (100A, 100B), mit einem ersten Spiegel (202), einem zweiten Spiegel (206), der einen Strahlengang (204) zusammen mit dem ersten Spiegel (202) definiert und ferner einen Durchbruch (208) aufweist, wobei das optische System (200) dazu eingerichtet ist, dass Arbeitslicht (210) durch den Durchbruch (208) auf den ersten Spiegel (202) fällt, wobei Arbeitslicht (210) von dem ersten Spiegel (202) auf den zweiten Spiegel (206) und von dem zweiten Spiegel (206) zu einem Zielobjekt (212) reflektierbar ist, einer Obskurationsblende (222), welche innerhalb des Strahlengangs (204) zwischen dem ersten Spiegel (202) und dem zweiten Spiegel (206) angeordnet ist, und einer Aperturblende (224), welche ein erstes Aperturblendensegment (226) und ein zweites Aperturblendensegment (228) aufweist, wobei das erste Aperturblendensegment (226) dazu eingerichtet ist, teilumfänglich Arbeitslicht (210), das von dem ersten Spiegel (202) zu dem zweiten Spiegel (206) reflektierbar ist, und das zweite Aperturblendensegment (228) dazu eingerichtet ist, teilumfänglich Arbeitslicht (210), das von dem zweiten Spiegel (206) zu dem Zielobjekt (212) reflektierbar ist, abzuschatten, wobei das erste Aperturblendensegment (226) und das zweite Aperturblendensegment (228) in Richtung (R1) von dem ersten Spiegel (202) zu dem zweiten Spiegel (206) beabstandet voneinander sind.
摘要:
Die Erfindung betrifft eine Vorrichtung zur Formung von kohärenter Strahlung einer Laserquelle zur Materialbearbeitung mittels zumindest einem diffraktiven Strahlformer. Erfindungsgemäß ist vorgesehen, dass zumindest eine erste und eine zweite Laserquelle zur Erzeugung eines Intensitätsmusters im Fernfeld vorgesehen sind, wobei die erste und die zweite Laserquelle zueinander inkohärent sind. Die erfindungsgemäße Vorrichtung ermöglicht die Erzeugung von Intensitätsmustern mit Strukturgrößen, die kleiner sind als dies dem doppelten des Divergenzwinkels der Laserquelle entspricht.
摘要:
A laser radar projection system is provided. The system includes a laser projector that projects a light beam. A beam splitter is arranged to receive the light beam from the projector and divides the light beam into a signal light beam and a reference light beam. A steering system changes the direction of the signal light beam and scans the light beam over at least a portion of the surface. An optical signal detector is arranged to receive a feedback light beam and the reference light beam. The optical signal detector generates a feedback signal in response to the feedback light beam and a reference signal in response to the reference light beam. One or more processors determine the distance to one or more points on the at least a portion of the surface based at least in part on the feedback signal and the reference signal.
摘要:
An illumination system includes a surface configured to have an imaging target placed thereon, a light source, a beam splitter and at least a first mirror. The beam splitter is configured to split the beam of light from the light source and the first mirror is configured to reflect a first beam from the beam splitter onto the surface with the imaging target. An imaging system includes an imaging surface configured to have an imaging target placed thereon, a mirror, and a capturing device. The capturing device is configured to capture an image of the imaging target through a path of emitted light that extends from the imaging target, reflects off of the mirror, and to the capturing device. The mirror, the capturing device, or both are configured to move in a diagonal direction with respect to the imaging surface to reduce a length of the path of emitted light. Systems and methods to calibrate an imaging system to remove or reduce non-uniformities within images of samples due to imaging system properties.
摘要:
An interfere) metric microscopy arrangement (1) is presented having an objective lens (20) that receives a light beam (9) emerging after sample interaction, wherefrom the light beam (9) is received by a beam splitter unit (30), positioned at a focal length (22) of the objective lens (20), the beam splitter unit (30) having a transparent substrate (32) and a point-like beam-splitting layer (34) that splits a part of the light beam (9) into a spatially filtered reference beam (40) and an object beam (50). Thereafter, a reference beam tube lens (60) and an object beam tube lens (70) receive the reference (40) and the object (50) beams, respectively. A beam combiner unit (80) having a transparent substrate (82) and a beam-combining layer (84) receives the reference (40) and the object (50) beams from the reference (60) and the object (70) beam tube lenses, respectively, and combines the reference (40) and the object (50) beams to form pattern-generating beam (99) directed towards the optical detector (90) to form an interference pattern thereon.
摘要:
Embodiments of the present invention include a backscatter reductant anamorphic beam sampler. The beam sampler can be implemented to measure a power of a reference beam generated by an electromagnetic radiation source in proportion to a power of a working beam. The beam sampler can provide astigmatic correction to a divergence of the working beam along one axis orthogonal to a direction of propagation. The beam sampler can further be implemented to prevent backscatter from impinging upon a photodetector of the beam sampler resulting in a reduction of error and instability in measurements taken by the beam sampler.
摘要:
A method includes generating a primary beam using light emitted by a light-source. The method includes generating a secondary beam using a portion of the light using a lens of a telescope. The lens includes one or more refraction elements positioned on a first surface of the lens, and the secondary beam is generated by diverting the portion of the light using the one or more refraction elements.
摘要:
The present invention provides a reflective telescopic system, to control the generation of filamentation of ultrashort and intense laser pulses that includes: a flat mirror, an adaptive reflective mirror, a dichroic convex mirror, an off-axis parabolic mirror, and a first laser source. The convex mirror and the adaptive reflective mirror are mounted on an independent breadboard and set on a translation stage. The propagation axis of the laser beam reflected by the mirror should correspond to the off-axis of the parabolic mirror. The parabolic mirror reflects the beam at a specific angle. Finally, the propagation axis between the dichroic convex mirror and the off-axis parabolic mirror, the propagation axis between the flat mirror and the adaptive reflective mirror, and the axis of the translation stage should be substantially parallel to each other. The present invention also contemplates the boresighting of a weak laser beam from a second laser source.
摘要:
An optical system for attenuating and imaging an optical beam for a subsequent intensity measurement of said optical beam comprises an input aperture for the optical beam, a collimating optical element for collimating the optical beam propagating divergently from the input aperture, an attenuating optical arrangement for attenuating the intensity of the optical beam propagating from the collimating optical element, the attenuating optical arrangement being arranged to modify the optical beam such that a beam portion with an intensity lower than the intensity of the optical beam is generated, the attenuating optical arrangement being insensitive to a polarization state of the optical beam, and a detector for measuring the intensity of the beam portion propagating from the attenuating optical arrangement.