摘要:
A dual-beam laser cutting system uses laser beam polarization to output two identical laser beams. The dual identical laser beams are spaced appropriately to simultaneously cut a water thus increasing the laser cutting system's throughput as compared to a single-laser cutting system. In one implementation, the dual-beam laser cutting system 100 utilizes a beam expander 220, two half-wave plates 224, 238, a polarizing beam splitter 228, a mirror 236, and two lenses 234, 242 to provide two identical laser beams 202, 204 from a single laser source 214. The identical laser beams 202, 204 are tuned to have the same power, cross-sectional diameter, and polarization direction. One of the half-wave plates 224 is rotated to yield laser beams with the same power. The other half-wave plate 238 is rotated to yield laser beams with the same polarization direction.
摘要:
A dual-beam laser cutting system uses laser beam polarization to output two identical laser beams. The dual identical laser beams are spaced appropriately to simultaneously cut a water thus increasing the laser cutting system's throughput as compared to a single-laser cutting system. In one implementation, the dual-beam laser cutting system 100 utilizes a beam expander 220, two half-wave plates 224, 238, a polarizing beam splitter 228, a mirror 236, and two lenses 234, 242 to provide two identical laser beams 202, 204 from a single laser source 214. The identical laser beams 202, 204 are tuned to have the same power, cross-sectional diameter, and polarization direction. One of the half-wave plates 224 is rotated to yield laser beams with the same power. The other half-wave plate 238 is rotated to yield laser beams with the same polarization direction.
摘要:
Methods and apparatus for providing constant emissivity of the backside of susceptors are described. Provided is a method comprising: providing a susceptor in a deposition chamber, the susceptor comprising a susceptor plate and a layer comprising an oxide, a nitride, an oxynitride, or combinations thereof, the layer being stable in the presence of the reactive process gases; and locating the wafer on a support surface of the susceptor plate. The method can further comprise selectively depositing an epitaxial layer or a non-epitaxial layer on a surface of the wafer. The method can also further comprise selectively etching to maintain the oxide, nitride, oxynitride, or combinations thereof layer.
摘要:
Methods and apparatus for providing constant emissivity of the backside of susceptors are provided. Provided is a susceptor comprising: a susceptor plate having a surface for supporting a wafer and a backside surface opposite the wafer supporting surface; a layer comprising an oxide, a nitride, an oxynitride, or combinations thereof located on the backside surface of the susceptor plate, the layer being stable in the presence of a reactive process gas. The layer comprises, for example, silicon dioxide, silicon nitride, silicon oxynitride, or combinations thereof. Also provided is a method comprising: providing a susceptor in a deposition chamber, the susceptor comprising a susceptor plate and a layer comprising an oxide, a nitride, an oxynitride, or combinations thereof, the layer being stable in the presence of the reactive process gases; locating the wafer on a support surface of the susceptor plate. The method can further comprises selectively depositing an epitaxial layer or a non-epitaxial layer on a surface of the wafer. The method further comprises selectively etching to maintain the oxide, nitride, oxynitride, or combinations thereof layer.
摘要:
According to one aspect of the invention, an apparatus for reducing auto-doping of the front side of a substrate and reducing defects on the backside of the substrate during an epitaxial deposition process for forming an epitaxial layer on the front side of the substrate comprising: a means for forming a wafer gap region between the backside of the substrate and a susceptor plate, having an adjustable thickness; a means for ventilating auto-dopants out of the wafer gap region with a flow of inert gas, while inhibiting or prohibiting the flow of inert gas over the front side of the substrate; and a means for flowing reactant gases over the surface of the front side of the substrate, while inhibiting or prohibiting the flow of reactant gases near the surface of the backside of the substrate.
摘要:
Embodiments of the invention provide methods for forming hafnium materials, such as oxides and nitrides, by sequentially exposing a substrate to hafnium precursors and active oxygen or nitrogen species (e.g., ozone, oxygen radicals, or nitrogen radicals). The deposited hafnium materials have significantly improved uniformity when deposited by these atomic layer deposition (ALD) processes. In one embodiment, an ALD chamber contains an expanding channel having a bottom surface that is sized and shaped to substantially cover a substrate positioned on a substrate pedestal. During an ALD process for forming hafnium materials, process gases form a vortex flow pattern while passing through the expanding channel and sweep across the substrate surface. The substrate is sequentially exposed to chemical precursors that are pulsed into the process chamber having the vortex flow.
摘要:
A system for monitoring a process inside a high temperature semiconductor process chamber by capturing images is disclosed. Images are captured through a borescope by a camera. The borescope is protected from high temperatures by a reflective sheath and an Infrared (IR) cur-off filter. Images can be viewed on a monitor and can be recorded by a video recording device. Images can also be processed by a machine vision system. The system can monitor the susceptor and a substrate on the susceptor and surrounding structures. Deviations from preferred geometries of the substrate and deviations from preferred positions of susceptor and the substrate can be detected. Actions based on the detections of deviations can be taken to improve the performance of the process. Illumination of a substrate by a laser for detecting deviations in substrate geometry and position is also disclosed.
摘要:
The present invention provides methods, systems, and apparatus for epitaxial film formation that includes an epitaxial chamber adapted to form an epitaxial layer on a substrate; a deposition gas manifold adapted to supply at least one deposition gas and a carrier gas to the epitaxial chamber; and an etchant gas manifold, separate from the deposition gas manifold, and adapted to supply at least one etchant gas and a carrier gas to the epitaxial chamber. Numerous other aspects are disclosed.
摘要:
A film formation system 10 has a processing chamber 15 bounded by sidewalls 18 and a top cover 11. In one embodiment, the top cover 11 has a reflective surface 13 for reflecting radiant energy back onto a substrate 19, pyrometers 405 for measuring the temperature of the substrate 19 across a number of zones, and at least one emissometer 410 for measuring the actual emissivity of the substrate 19. In another embodiment, a radiant heating system 313 is disposed under the substrate support 16. The temperature of the substrate 19 is obtained from pyrometric data from the pyrometers 405, and the emissometer 410.
摘要:
A film formation system 10 includes a processing chamber 15 bounded by sidewalls 18 and a top cover 11. In one embodiment, a susceptor 16 is rotatably disposed in the system 10, and overlaps with a first peripheral member 205 disposed around the sidewalls 18. A radiant heating system 313 is disposed under the susceptor 305 to heat the substrate 19. In another embodiment, the top cover 11 has equally spaced pyrometers 58 for measuring the temperature of the substrate 19 across a number of zones. The temperature of the substrate 19 is obtained from pyrometric data from the pyrometers 58.