摘要:
An optical, directional coupler has a first input, a second input, a first output, and a second output. The coupler is made with a shoulder disposed on a substrate and a first ridge and a second ridge disposed on the shoulder. The first ridge extends from the first input to the first output. The second ridge extends from the second input to the second output. The shoulder, the first ridge, and the second ridge taper to provide coupling and are modified to select a coupling ratio.
摘要:
An EUV light generation system includes a driver laser comprising a master oscillator such as a semiconductor laser, a spatial filter, gas slab amplification devices, relay optical systems, and high-speed axial-flow amplifiers. The slab amplification devices include beam adjusting optical units disposed, respectively, at input and output sides of the slab amplifiers SA to convert the beam profile and/or polarization direction and/or an elongated direction of the beam profile with the slab amplifiers is parallel to a free space axis AF of the slab waveguides, i.e. parallel to the discharge electrodes.
摘要:
Certain example embodiments of this invention relate to waveguide lasers (e.g., RF-excited waveguide lasers). Certain example embodiments of this invention provide combined waveguide cover and non-coupled top electrodes, and/or heat load balancing vacuum vessels including multiple (e.g., two or more) chambers. In certain example embodiments, RF energy may couple through the combined waveguide cover and non-coupled top electrode without significantly traversing the insulating carrier material via one or more cutouts or gaps formed in the RF coupling region of the top (or even a bottom) electrode. In certain example embodiments, first and second chambers of the vacuum vessel may be arranged so that heat generated in the discharge region flows away from the first and second chambers, thereby reducing thermally induced distortion of the optical component during laser operation. These techniques may be used alone or in various combinations.
摘要:
Multiple laser beams, each having a shape such as a Gaussian profile (200), can be incoherently combined to obtain a shaped, flat top laser beam (300, 400). The combined laser beams can provide power levels necessary for material processing applications such as annealing, drilling, and cutting, while minimizing the amount of unused power. The lasers can be positioned in an array (700, 800) in order to shape the flat top beam, and can be staggered in position where necessary to give each output beam an equal beam path length. The relative frequencies and/or powers of the lasers can be adjusted to control the flatness and stability of the incoherently combined beam.
摘要:
Ein Laser mit wenigstens zwei Elektrodenrohren (2,3), von denen das eine (3) innerhalb des anderen (2) angeordnet ist, weist eine Kühleinrichtung (18) auf, die ihrerseits zumindest eine innerhalb des inneren Elektrodenrohres (3) angeordnete innere Kühlmittelleitung (11) und/oder zumindest eine außerhalb des äußeren Elektrodenrohres angeordnete äußere Kühlmittelleitung (10) umfasst. Zur Gewährleistung eines wirksamen Wärmeüberganges wird mittels einer inneren Stützeinrichtung (17) die innere Kühlmittelleitung (11) an dem inneren Elektrodenrohr (3) oder einer damit wärmeübertragend in Verbindung stehenden Fläche anliegend gehalten. Entsprechend wird die äußere Kühlmittelleitung (10) mittels einer äußeren Stützeinrichtung (16) mit ihrer Wandung an dem äußeren Elektrodenrohr (2) oder einer damit wärmeübertragend in Verbindung stehenden Fläche anliegend gehalten.