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A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 7489718 | Matched impedance controlled avalanche driver Controlled avalanche driver circuits and apparatuses for gas lasers. One embodiment typically delivers short, rapid, high voltage ionizing pulses in combination with an electric field whose magnitude is too low to sustain a normal glow discharge. The plasma is typic... | 02/10/2009 |
| 7427766 | Method and apparatus for producing extreme ultraviolet radiation or soft X-ray radiation A method of producing extreme ultraviolet radiation (EUV) or soft X-ray radiation by means of an electrically operated discharge, in particular for EUV lithography or for metrology, in which a plasma (22) is ignited in a gaseous medium between at least two el... | 09/23/2008 |
| 7420191 | Discharge radiation source, in particular UV radiation The invention concerns a radiation source, comprising an anode (2), a cathode (3), an electric discharge gap (4) between the anode (2) and the cathode (3) and a gas input conduit (30) in the discharge gap (4). The gas... | 09/02/2008 |
| 7315557 | Multi-wavelength light source apparatus A pulse sequence is configured by making a pulse waveform output from a pulse light source into a super Gaussian pulse of the third order or higher, and input to a spectrum expanding device. The spectrum expanding device broadens the spectrum of the pulse sequence w... | 01/01/2008 |
| 7308007 | Increased laser output energy and average power at wavelengths below 35 nm Saturated tabletop lasers having increased output energy and operating at 5 Hz repetition rate, were demonstrated at wavelengths about 18.9 nm for molybdenum targets, 16.4 nm for ruthenium targets, 14.7 nm for palladium targets, 13.9 nm for silver targets, and 13.2 ... | 12/11/2007 |
| 7215697 | Matched impedance controlled avalanche driver Controlled avalanche driver circuits and apparatuses for gas lasers. One embodiment typically delivers short, rapid, high voltage ionizing pulses in combination with an electric field whose magnitude is too low to sustain a normal glow discharge. The plasma is typic... | 05/08/2007 |
| 7190872 | Semiconductor optical amplifier and optical module using the same The present invention provides a polarization dependency-free, gain-saturated high function semiconductor optical amplifier and optical module at industrially low cost. The gist of the present invention is to structurally separate the optical signal propagating wave... | 03/13/2007 |
| 7072370 | Arrangement for generating pulsed currents with a high repetition rate and high current strength for gas discharge pumped radiation sources The invention is directed to an arrangement for generating pulsed currents for gas discharge pumped radiation sources, particularly with high repetition rates and high current strengths for generating plasma emitting EUV radiation. The object of the invention, to fi... | 07/04/2006 |
| 7039324 | Method, device, and system for regenerating optical signal The present invention relates to a method for regenerating an optical signal suitable for WDM (wavelength division multiplexing). In this method, an optical signal is supplied to an optical waveguide structure (e.g., optical fiber) for providing a nonlinear effect. ... | 05/02/2006 |
| 6998785 | Liquid-jet/liquid droplet initiated plasma discharge for generating useful plasma radiation Plasma discharge sources for generating emissions in the VUV, EUV and X-ray spectral regions. Embodiments can include running a current through liquid jet streams within space to initiate plasma discharges. Additional embodiments can include liquid droplets within t... | 02/14/2006 |
| 6956885 | Electromagnetic radiation generation using a laser produced plasma An extreme ultraviolet radiation generator is disclosed in which Xenon gas is continuously ejected from a high pressure nozzle into a low pressure chamber to generate Xenon atom clusters which are irradiated with a high repetition rate pulsed laser to form a plasma ... | 10/18/2005 |
| 6931049 | Laser plasma generation method and system A main laser beam is focused to irradiate a tip of a high-density spouting gas flow formed by heating and then vaporizing a target material by a light beam for preheating making it to the plasma. As the result, the generation of a fast debris in the target material ... | 08/16/2005 |
| 6924600 | Laser plasma generation method and structure thereof In laser-plasma generation, a fluid of target material is jet out to form a jet tube target 21 having a diameter φ and a wall thickness τ with a shell and a hollow space within the shell by using a core-column. A plurality of pulse-like laser beams 30 | 08/02/2005 |
| 6914927 | Laser discharge chamber passivation by plasma Methods and apparatus are provided for cleaning and passivating laser discharge chambers with plasmas. In one embodiment, an oxygen based plasma is formed in a plasma source external to the laser discharge chamber by applying a radiofrequency signal to oxygen contai... | 07/05/2005 |
| 6912238 | Particle beam device A laser and method of producing laser light. The laser and method involve passing a high energy beam of particles through an evacuated chamber. A static electric or magnetic field is established in the chamber in a direction that is essentially perpendicular to the ... | 06/28/2005 |
| 6529539 | Molecular light emission device Injection efficiency is greatly improved by chemically bonding an organic light emission molecule to an electrode, so as to realize a high efficiency light emission type of flat panel display and a high efficiency laser device, and realize a light emissio... | 03/04/2003 |
| 6498832 | Electrode configuration for extreme-UV electrical discharge source It has been demonstrated that debris generation within an electric capillary discharge source, for generating extreme ultraviolet and soft x-ray, is dependent on the magnitude and profile of the electric field that is established along the surfaces of the... | 12/24/2002 |
| 6356618 | Extreme-UV electrical discharge source An extreme ultraviolet and soft x-ray radiation electric capillary discharge source that includes a boron nitride housing defining a capillary bore that is positioned between two electrodes one of which is connected to a source of electric potential can g... | 03/12/2002 |
| 6185234 | Laser oscillation device A new laser oscillation device is provided which is capable of readily cooling down a laser medium without employing any large-size complicated separate or discrete devices such as fan blowers while at the same time improving the laser oscillation efficie... | 02/06/2001 |
| 6167065 | Compact discharge pumped soft x-ray laser An extremely compact soft x-ray and/or extreme ultraviolet laser is disclosed that can be repetitively fired within short time intervals. The laser generates a plasma within a capillary (3) by flowing through the capillary (3) a fast high current pulse ge... | 12/26/2000 |
| 6061379 | Pulsed x-ray laser amplifier Two techniques for producing plasma x-ray laser amplifiers, encompassing laser generated high density, micron-sized plasma columns, and microwave driven low density, large plasma volumes which provide the population inversions necessary for x-ray lasing t... | 05/09/2000 |
| 5953360 | All metal electrode sealed gas laser A gas laser includes a plurality of electrically conductive electrodes contained within a hollow housing that contains a laser gas medium. The electrodes surround and define a laser bore in which a plasma is excited by the electrodes. Each of the electrod... | 09/14/1999 |
| 5832007 | Apparatus for and method of generating X-ray laser An X-ray laser generating apparatus comprises a laser oscillator for generating a pulse laser beam, a pulse train converter for converting the pulse laser beam into a pulse train laser beam, an optical device for focusing the pulse train laser beam to a t... | 11/03/1998 |
| 5544191 | Metal vapor laser capable of cold operation The improved metal vapor laser capable of cold operation performs plasma etching on a vaporizing metal within a laser tube in the presence of a reactive gas so that the metal is vaporized at temperatures below its boiling point to effect laser oscillation... | 08/06/1996 |
| 5400357 | Gas laser in particular CO2 laser A gas laser, in particular a CO2 laser, contains as laser medium a gas that is excited into a plasma by a HF energy supply, in particular a microwave energy supply, whereas the HF waves are coupled into the laser medium (4) through a rectangula... | 03/21/1995 |
| 5394411 | Method for producing high intensity optical through x-ray waveguide and applications Optical guiding of intense laser pulses over a distance of more than one Rayleigh length in a plasma is discussed herein using a multi-pulse technique. The first pulse or pulse sequence prepares a shock-driven, axially-extended radial electron density pro... | 02/28/1995 |
| 5381432 | Gas laser oscillator A gas laser oscillator according to the present invention comprises an ion laser tube provided with a capillary tube and an anode and a cathode as discharging electrodes disposed at its ends, plasma focusing electromagnets to generate the magnetic field f... | 01/10/1995 |
| 5345465 | Apparatus and method for guiding an electric discharge A device for generating and guiding an electric discharge current including a first electrode, second electrode and a material arranged between the first and second electrode. The device uses a laser for generating photons having energies equal to the ene... | 09/06/1994 |
| 5335238 | Apparatus and method for guiding an electric discharge with a magnetic field A device and method for generating and guiding an electric discharge current including a first electrode, a second electrode and a material arranged between the first and second electrodes. The device and method involve the use of a laser for generating p... | 08/02/1994 |
| 5293573 | Stripline laser including electrically conducting mirror A stripline laser wherein the distance between a mirror and a stripline is minimized without modifying the characteristics of the laser is provided. The stripline laser prevents damaging of the mirror due to plasma discharge by providing at least two insu... | 03/08/1994 |
| 5107510 | Apparatus and method for burst-mode operation of a pulsed laser Apparatus and method of providing for the excitation of a pulsed laser in which the pulsed excitation energy is provided to the laser plasma volume in a series of bursts, each burst being characterized by containing sufficient pulses to sustain the laser ... | 04/21/1992 |
| 5003544 | X-ray laser An X-ray laser (10) that lases between the K edges of carbon and oxygen, i.e. between 44 and 23 Angstroms, is provided. The laser comprises a silicon (12) and dysprosium (14) foil combination (16) that is driven by two beams (18, 20) of intense line focus... | 03/26/1991 |
| 4942580 | X-ray laser with enhanced x-ray gain through photodepopulation An x-ray laser comprising a first hydrogenic ion having a nuclear charge Z lasing on a 3-2 Balmer- transition, a second hydrogenic ion having a nuclear charge Z/2 emitting Lyman- and Lyman-ଲ photons, wherein n=2 electrons of the first ... | 07/17/1990 |
| 4939744 | Method and apparatus for producing a photopumped VUV laser in MO6+ ion-containing plasma A method andan apparatus for producing a photopumped VUV laser in an Mo6+ ion-containing plasma comprise photopumping the Mo6+ ion-containing plasma with radiation from Mo11+ ions. In one embodiment, the Mo6+ ... | 07/03/1990 |
| 4937832 | Methods and apparatus for producing soft x-ray laser in a capillary discharge plasma The generation of soft x-ray and/or extreme untraviolet laser radiation is accomplished in a capillary plasma generated by a fast discharge. The method yields laser action at short wavelengths in a discharge created plasma having a large length-to-diamete... | 06/26/1990 |
| 4926428 | Method and apparatus for sensing the wavelength of a laser beam A method and apparatus for sensing the wavelength of a laser beam using an optogalvano effect by atoms or molecules in plasma. Atoms or molecules in the plasma are irradiated with the laser beam. The impedance of the plasma at that time is sensed to sense... | 05/15/1990 |
| 4889605 | Plasma pinch system A plasma pinch system includes a fluid-jet pinch device for establishing a plasma source composed of a tenuous vapor preconditioning cloud surrounding a central narrow flowing fine stream of fluid under pressure. A discharge device is connected electrical... | 12/26/1989 |
| 4890294 | Plasma apparatus The invention relates to a plasma apparatus where plasma is generated utilizing microwave discharge and laser excitation is performed and plasma processing is performed. More specifically, in a plasma apparatus where a microwave from a microwave oscillato... | 12/26/1989 |
| 4870653 | Traveling-wave laser-produced-plasma energy source for photoionization laser pumping and lasers incorporating said A traveling-wave, laser-produced-plasma, energy source used to obtain single-pass gain saturation of a photoionization pumped laser. A cylindrical lens is used to focus a pump laser beam to a long line on a target. Grooves are cut in the target to present... | 09/26/1989 |
| 4841537 | Medium for gas laser excited by ionizing particles A medium for a gas laser excited by ionizing particles containing helium, neon, argon or krypton with a total concentration in excess of 1019 cm-3 with argon or krypton concentration ranging from 3.multidot.1016 cm-3 | 06/20/1989 |
