Showing papers on "Pulsed laser deposition published in 1968"
67 citations
Patent•
23 Feb 1968
TL;DR: RAPID DEPOSITION RATE and EFFICIENT MATERIAL UTILIZATION are ACHIEVED in a VACUUM VAPOR DEPOISITION system by a Low VOLTAGE, HIGH CURRENT ELECTRON BEAM ARRANGEMENT for HEATING the Material to a SUFFICIENTly High TEMPERATURE for VAP ORIZATION, for IonIZING the VAPorIZED MaterIAL IN order to IMPART A POSITIVE CHARGE THERETO and for ELECTROST
Abstract: RAPID DEPOSITION RATES AND EFFICIENT MATERIAL UTILIZATION ARE ACHIEVED IN A VACUUM VAPOR DEPOISITION SYSTEM BY A LOW VOLTAGE, HIGH CURRENT ELECTRON BEAM ARRANGEMENT FOR HEATING THE MATERIAL TO A SUFFICIENTLY HIGH TEMPERATURE FOR VAPORIZATION, FOR IONIZING THE VAPORIZED MATERIAL IN ORDER TO IMPART A POSITIVE CHARGE THERETO AND FOR ELECTROSTATICALLY AND/OR ELECTROMAGNETICALLY ATTRACTING THE IONIZED, VAPORIZED MATERIAL TO A SUBSTRATE, AT WHICH DEPOSITION OF THE MATERIAL OCCURS. D R A W I N G
45 citations
24 citations
Patent•
24 May 1968
TL;DR: In this paper, an ion source comprising anode rod 34 and cathode cap 26 is supplied with argon through the valve 36 and a glow discharge is established between the electrodes The coating is maintained at 10-4 mm Hg by the pump.
Abstract: A vacuum coating apparatus includes an ion source 22 for cleaning the substrate 18 of egglass by ion bombardment during, or immediately preceding, the deposition of the coating by evaporating egaluminium from a heater 24 The ion source comprising anode rod 34 and cathode cap 26 is supplied with argon through the valve 36 and a glow discharge is established between the electrodes The coating is maintained at 10-4 mm Hg by the pump 32
21 citations
TL;DR: In this paper, it was shown that a frequency doubled part of the laser beam was reflected from the Lippman plate at the Bragg angle, and a phase grating was formed.
Abstract: It is postulated that in a saturable dye absorber used for giant pulse laser switching a phase grating is formed. To prove this experimentally a frequency doubled part of the laser beam was reflected from this ``Lippman plate'' at the Bragg angle.
18 citations
Patent•
09 Aug 1968TL;DR: In this paper, a method for monitoring the thickness of a thin transparent film while it is growing on a hot substrate by vapor deposition is described. But this method is limited to thin transparent films.
Abstract: Described herein is a method for monitoring the thickness of a thin transparent film while it is growing on a hot substrate by vapor deposition. In a specific example, two silicon substrates, of which one has a predeposited coating of silicon dioxide, are located close together to be subjected to a similar vapor deposition of alumina films. The difference in electromagnetic radiation emitted by each substrate and transmitted through each film is monitored, and the deposition process is terminated just after this difference reaches a prescribed value.
13 citations
TL;DR: In this paper, the deposition and chemisorption of hydrogen on tungsten have been investigated with a molecular beam apparatus to which a field emission microscope is attached, and it is shown that the deposition depends on a critical velocity for the hydrogen molecule in the beam.
9 citations
Patent•
13 Dec 1968
TL;DR: In this article, a vacuum vapor deposition process is described for depositing a coating of an iron-base alloy on a substrate, and the quality of the deposited coating is improved by maintaining the substrate above a minimum temperature of 1,600* F.
Abstract: A vacuum vapor deposition process is described for depositing a coating of an iron-base alloy on a substrate. The quality of the deposited coating is improved by maintaining the substrate above a minimum temperature of 1,600* F., in the case of alloys with substantially soluble constituents, and of 1,700* F., in the case of alloys having at least partially insoluble constituents.
8 citations
TL;DR: A single Brewster window pulsed water vapor laser has been constructed in this article, which is compared with that of the laser built using the same mirrors, but with both enclosed in the discharge tube.
Abstract: A single Brewster window pulsed water vapor laser has been constructed. Its performance is compared with that of the laser built using the same mirrors, but with both enclosed in the discharge tube. With the Brewster window laser, 13 emission lines are detected, the strongest line at 27.95 μ having a peak power of 770 watts.
8 citations
7 citations
Patent•
24 Apr 1968
TL;DR: In this paper, the authors describe a method and an approach for feeding a wound into a VAPOR source in a VACUUM DEPOSITION system to either replace a damaged device or create a new one.
Abstract: A METHOD AND APPARATUS ARE DESCRIBED FOR FEEDING WIRE INTO A VAPOR SOURCE CRUCIBLE IN A VACUUM DEPOSITION SYSTEM TO EITHER REPLENISH MATERIAL VAPORIZED IN THE CRUICBLE OR TO PRODUCE A UNIFORM COATING ON THE WIRE. THE WIRE IS URGED INTO THE CRUCIBLE THROUGH A HEATED GUIDE MEMBER UPON WHICH VAPOR WILL NOT CONDENSE AND SOLIDIFY.
TL;DR: In this paper, a substrate heater, developed for thin film deposition work, is described in which liquid gallium-indium eutectic alloy is used to provide good thermal contact to one face of the substrate, enabling better definition of the temperature on the other face.
Abstract: A substrate heater, developed for thin film deposition work, is described in which liquid gallium-indium eutectic alloy is used to provide good thermal contact to one face of the substrate, enabling better definition of the temperature on the other face. The low vapour pressure of the alloy permits the use of the heater in ultra-high vacuum for temperatures between room and 250°C.
Patent•
12 Nov 1968
TL;DR: A vapour deposition apparatus comprises an inner chamber 10 having a roll of material and an outer chamber 1 with two sources of aluminium for coating both sides of the material which may be e.g. polyester sheet or fabric, and may carry separate articles to be coated.
Abstract: 1,173,978. Vapour deposition apparatus. EDWARDS HIGH VACUUM INTERNATIONAL Ltd. Oct.28, 1968 [Nov. 14, 1967], No.51692/67. Heading C7F. A vapour deposition apparatus comprises an inner chamber 10 having a roll of material and an outer chamber 1 with e.g. two sources of aluminium for coating both sides of the material which may be e.g. polyester sheet or fabric, and may carry separate articles to be coated. Each source may have a movable shutter 17, and the opening in the chamber 10 may be lined with e.g. p.t.f.e. to act as a seal. The chamber 10 and the intermediate rollers may be mounted on an end door of the chamber 1.
01 Apr 1968
TL;DR: In this paper, a high-power pulsed water vapor laser beam passing through humid air produces a large amount of sonic energy easily detected by the ear, and using an ultrasonic transducer as a detector the effect was observed on eleven emission lines between 17.55 microns and 78.41 microns.
Abstract: A high-power pulsed water vapor laser beam passing through humid air produces a large amount of sonic energy easily detected by the ear. Using an ultrasonic transducer as a detector the effect has been observed on eleven emission lines between 17.55 microns and 78.41 microns. This detection scheme is very useful for laser alignment and beam tracing.