Abstract:
An element is deposited by flowing a gas through a solid donor compound that includes the element, and over a substrate. The flow of gas deposits a film of a few monolayers of donor compound on the substrate. An optical radiation source (e.g., a femtosecond laser) which produces optical radiation at an instantaneous intensity sufficient to cause non linear or otherwise enhanced interaction between optical radiation photons and the donor compound is used to decompose the donor compound and deposit the metal on the substrate. After an initial deposit of the donor compound is produced, optical radiation can be absorbed and heat the substrate in the localized area of the deposit in order to accelerate the deposition process by thermally decomposing the donor compound.
Abstract:
The present invention relates to an enhanced sequential atomic layer deposition (ALD) technique suitable for deposition of barrier layers, adhesion layers, seed layers, low dielectric constant (low-k) films, high dielectric constant (high-k) films, and other conductive, semi-conductive, and non-conductive films. This is accomplished by 1) providing a non-thermal or non-pyrolytic means of triggering the deposition reaction; 2) providing a means of depositing a purer film of higher density at lower temperatures; and, 3) providing a faster and more efficient means of modulating the deposition sequence and hence the overall process rate resulting in an improved deposition method.
Abstract:
A laser surface treatment for reducing reflection loss on the surface of an optical material is provided. A metal film is formed on the surface of the optical material, and then the metal film is removed from the optical material by irradiation of an ultra-intense short-pulse laser beam having a pulse width of 1 femtosecond to 100 picoseconds, so that a fine periodic structure is formed on the surface of the optical material exposed by the removal of the metal film. The obtained fine periodic structure has asperities with a periodic interval of preferably 50 to 1000 nm, which can be controlled by changing the laser energy density.
Abstract:
Monolithic optical structures include a plurality of layer with each layer having an isolated optical pathway confined within a portion of the layer. The monolithic optical structure can be used as an optical fiber preform. Alternatively or additionally, the monolithic optical structure can include integrated optical circuits within one or more layers of the structure. Monolithic optical structures can be formed by performing multiple passes of a substrate through a flowing particle stream. The deposited particles form an optical material following consolidation. Flexible optical fibers include a plurality of independent light channels extending along the length of the optical fiber. The fibers can be pulled from an appropriate preform.
Abstract:
In order to correct a white defect on a surface of a substrate, the substrate is held with the surface facing downward, laser light is upward irradiated at the defect on the surface in material gas, and as a result, the white defect is covered with film.
Abstract:
An element is deposited by flowing a gas through a solid donor compound that includes the element, and over a substrate. The flow of gas deposits a film of a few monolayers of donor compound on the substrate. An optical radiation source (e.g., a femtosecond laser) which produces optical radiation at an instantaneous intensity sufficient to cause non linear or otherwise enhanced interaction between optical radiation photons and the donor compound is used to decompose the donor compound and deposit the metal on the substrate. After an initial deposit of the donor compound is produced, optical radiation can be absorbed and heat the substrate in the localized area of the deposit in order to accelerate the deposition process by thermally decomposing the donor compound.
Abstract:
The present invention relates to an enhanced sequential atomic layer deposition (ALD) technique suitable for deposition of barrier layers, adhesion layers, seed layers, low dielectric constant (low-k) films, high dielectric constant (high-k) films, and other conductive, semi-conductive, and non-conductive films. This is accomplished by 1) providing a non-thermal or non-pyrolytic means of triggering the deposition reaction; 2) providing a means of depositing a purer film of higher density at lower temperatures; and, 3) providing a faster and more efficient means of modulating the deposition sequence and hence the overall process rate resulting in an improved deposition method.
Abstract:
The present invention relates to an enhanced non-sequential atomic layer deposition (ALD) technique suitable for deposition of barrier layers, adhesion layers, seed layers, low dielectric constant (low-k) films, high dielectric constant (high-k) films, and other conductive, semi-conductive, and non-conductive films. This is accomplished by 1) providing a non-thermal or non-pyrolytic means of triggering the deposition reaction; 2) providing a means of depositing a purer film of higher density at lower temperatures; and, 3) providing a faster and more efficient means of modulating the deposition sequence and hence the overall process rate resulting in an improved deposition method.
Abstract:
Metal quantum dots are produced from a solution of the metal salt when the solution is passed through an electrostatic capillary nozzle (3) into a chamber (7). The nozzle (3) produces an aerosol of droplets (4) of the solution which is then irradiated using laser light (8). The solution evaporates from the droplets to form quantum dots of the metal element on a substrate 5 in the chamber 7.
Abstract:
A method and system for fabricating porous polycrystalline diamond material whose volume is described by a dimension larger than 1 mm, with no upper limit on size. A net shape diamond part is fabricated by compacting small diamond particles into a mold and then performing chemical vapor deposition (CVD) growth of diamond on the particles until they are joined into a porous whole. The CVD growth of diamond is achieved by photofragmentation of vapor phase Fullerene, C.sub.60, molecules in the pores. C.sub.60 molecules are vaporized from solid C.sub.60 at a temperature of about 800.degree. C. The vapor diffuses into the voids between the diamond particles in the mold. The vapor is then subjected to intense illumination by a laser which causes the C.sub.60 molecules fragment. The deposition of these fragments causes diamond growth to occur on all surfaces around the pores between the particles. Continual replenishment of the C.sub.60 by the vapor source allows continuous deposition. The transparency of the diamond particles allows penetration of the laser illumination into the volume of the particles. After sufficient deposition and growth, diamond connections are made between the particles, making the entire mass a porous, single diamond entity.