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7560716 |
Free electron oscillator
A beam of charged particles (e.g., an electron beam) from a charged particle source can be selectively applied to a pair of electrodes. For example, the charged particles can be electrons that are...
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7499476 |
Compact two-beam push-pull free electron laser
An ultra-compact free electron laser comprising a pair of opposed superconducting cavities that produce identical electron beams moving in opposite directions such that each set of superconducting...
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7466725 |
Quantum computer apparatus
Quantum computer includes optical resonator including system group containing systems each having energy states highest-energy state |3>, and other two energy states |1> and |2>, fourth or...
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7348569 |
Acceleration of charged particles using spatially and temporally shaped electromagnetic radiation
A method and apparatus for accelerating charged particles are disclosed, wherein the method comprises using at least a transverse component of a temporally and spatially shaped electromagnetic...
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7342230 |
Terahertz imaging system and associated method
A terahertz imaging system uses a terahertz light source to illuminate a target object with a series of short pulses of terahertz light. The pulses have a low average output power but a high peak...
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7339724 |
Bremsstrahlung laser (“blaser”)
A light generating system that comprises a narrow evacuated slot defined between at least two high index contrast waveguide elements. The apparatus can be fabricated using a material such as a SOI...
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7321604 |
Ultra-short wavelength x-ray system
A method and apparatus to generate a beam of coherent light including x-rays or XUV by colliding a high-intensity laser pulse with an electron beam that is accelerated by a synchronized laser...
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7196601 |
Temperature correction of wigglers and undulators
An undulator includes a periodic arrangement of magnets to produce a periodic spatial magnetic field distribution in a magnetic gap defined by the magnets. The undulator further includes a...
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7157942 |
Digital frequency difference detector with inherent low pass filtering and lock detection
A structure and method for implementing a fully digital frequency difference detector uses an n-bit counter to count cycles of a reference clock signal and an m-bit counter to count cycles of a...
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7129807 |
Undulator and method of operation thereof
In an undulator for the generation of synchrotron radiation from a particle beam introduced into the undulator, two partial undulators are provided each comprising a conductor of superconductive...
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7046703 |
Bessel free electron laser device
Methods and apparatus are provided for modifying a free electron laser (FEL) to produce a non-diverging laser beam. A relativistic electron beam is converted to a Bessel beam in an FEL resonator...
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6970483 |
Method and a device for realizing both high extraction efficiency of laser light from electron beams and femto-second ultra-short in free-electron lasers pulses
A method for realizing both high extraction efficiency of laser light from electron beams and femto-second ultra-short pulses in a free-electron laser, wherein the peak current of electron pulses...
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6965625 |
Apparatuses and methods for generating coherent electromagnetic laser radiation
The present disclosure is directed to laser apparatuses for generating coherent electromagnetic laser radiation having an electron beam generator, a diffraction grating element oriented such that a...
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6885008 |
Achromatic recirculated chicane with fixed geometry and independently variable path length and momentum compaction
A particle beam recirculated chicane geometry that, through the inducement of a pair of 180 degree bends directed by the poles of a pair of controllable magnetic fields allows for variation of...
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6858998 |
Variable-period undulators for synchrotron radiation
A new and improved undulator design is provided that enables a variable period length for the production of synchrotron radiation from both medium-energy and high-energy storage rings. The variable...
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6831933 |
Modular approach to the next generation, short wavelength, laser-like light sources
A system and method for implementing a next generation laser-like light source with Free Electron Lasers (FELs) are provided whereby the construction of a Free Electron Laser (FEL) is customized...
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6782010 |
Limiter optics
Limiter optics for an ignition feedback regenerative free electron laser amplifier have a pickoff mirror direct a portion of the output from the free electron laser through a focusing assembler....
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6724782 |
Femtosecond laser-electron x-ray source
A femtosecond laser-electron X-ray source. A high-brightness relativistic electron injector produces an electron beam pulse train. A system accelerates the electron beam pulse train. The...
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6643314 |
Phase locked free electron laser with rational mode locking
A compound intercavity interferometer for a free-electron laser (FEL) comprising at least two beam splitters positioned at a predetermined angles with respect to optical pathways. It is emphasized...
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6636534 |
Phase displacement free-electron laser
A free-electron laser (FEL), which in a preferred embodiment comprises a relativistic electron beam generator; an optical cavity capable of storing a co-propagating optical beam; an interaction...
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6574248 |
Laminated wigglers
A wiggler that, when used in a free electron laser, reduces the harmonicity of the light emitted from the free electron laser. In general, the reduced harmonicity is accomplished by making the...
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6556595 |
Hybrid wiggler
Disclosed is a novel hybrid wiggler as a kind of insertion devices, for example, in an electron accelerator. Different from a conventional hybrid wiggler consisting of two oppositely facing arrays...
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6445130 |
Axially polarized radiation from a toroidal magnetic structure with an equatorial slot
A toroidal magnet structure for polarizing a magnetic wiggler and a synchrotron normal is provided. This structure comprises a toroid composed of a plurality of magic ring semicircular segments,...
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6345058 |
Chirped pulse inverse free-electron laser vacuum accelerator
A chirped pulse inverse free-electron laser (IFEL) vacuum accelerator for high gradient laser acceleration in vacuum. By the use of an ultrashort (femtosecond), ultrahigh intensity chirped laser...
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6301041 |
Unidirectional optical amplifier
Within a vacuum vessel, there are arranged an electron emitting part emitting an electron beam in a first direction, and an optical amplifying part amplifying incident light with the help of energy...
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6285690 |
Ignition feedback regenerative free electron laser (FEL) amplifier
An ignition feedback regenerative amplifier consists of an injector, a linear accelerator with energy recovery, and a high-gain free electron laser amplifier. A fraction of the free electron laser...
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6268954 |
Method and system for controlling the slope of an output response
This invention relates to a method for filtering and to a variable slope optical filter for in-line use with an optical amplifier signal. The filter has a wavelength response that is substantially...
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6195199 |
Electron tube type unidirectional optical amplifier
Within a vacuum vessel 10, there are arranged an electron gun 2 emitting an electron beam and an amplification part 3 which amplifies incident light 7 by means of the energy of the electron beam....
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6151384 |
X-ray tube with magnetic electron steering
An X-ray tube uses a magnetic field to steer electrons. The magnetic field urges electrons toward the anode, increasing the proportion of electrons emitted from the cathode that reach desired...
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6137811 |
System for conditioning an electron beam for improved free-electron laser operation
A system is disclosed for developing a conditioned electron beam of high quality for an exemplary application to a free-electron source of coherent radiation. The system comprises: a source for...
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6014387 |
Stable operating regime for traveling wave devices
Autophase stability is provided for a traveling wave device (TWD) electron beam for amplifying an RF electromagnetic wave in walls defining a waveguide for said electromagnetic wave. An off-axis...
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5982787 |
Rippled beam free electron laser amplifier
A free electron laser amplifier provides a scalloping annular electron beam that interacts with the axial electric field of a TM 0n mode. A waveguide defines an axial centerline and, a solenoid...
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5960013 |
Self-seeded injection-locked FEL amplifer
A self-seeded free electron laser (FEL) provides a high gain and extraction efficiency for the emitted light. An accelerator outputs a beam of electron pulses to a permanent magnet wiggler having...
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5956353 |
Free electron laser with masked chicane
A free electron laser (FEL) is provided with an accelerator for outputting electron beam pulses; a buncher for modulating each one of the electron beam pulses to form each pulse into longitudinally...
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5945899 |
Permanent magnet twister
A permanent magnet rectangular bar shaped to form a helix having a central ore and a longitudinal axis. The magnetic orientation of the helical permanent magnet bar is along the longitudinal axis...
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5909165 |
Chiron twister
A Chiron Twister magnet structure is provided from a right circular cylinder constructed of a passive material, such as iron, formed into a continuous helical bar deployed around a tunnel-like...
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5896407 |
High-efficiency plasma confining method, laser oscillating method and laser oscillator
A high-efficiency plasma confining method, and a laser oscillating method of oscillating a laser, confine a plasma generated by entering a laser beam via an entry of a superconducting cylinder...
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5889797 |
Measuring short electron bunch lengths using coherent smith-purcell radiation
A method is provided for directly determining the length of sub-picosecond electron bunches. A metallic grating is formed with a groove spacing greater than a length expected for the electron...
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5887008 |
Method and apparatus for generating high energy coherent electron beam and gamma-ray laser
A function is introduced into a high energy electron storage ring or collider so as to form pulses of an electron beam each having a time width for causing coherence of electrons, thereby...
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5822342 |
Method of forming a plasma micro-undulator
Undulator is a device which produces a high intensity synchrotron radiation having narrow band width by making a relativistic electron beam undulate in an alternating magnetic field. It is possible...
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5815517 |
Method and apparatus for generating super hard laser
In a method of generating a super hard laser, uniformization of the energy of an electron beam in an electron storage ring and formation of a pulse of the electron beam through gyration phase...
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5805620 |
Beam conditioner for free electron lasers and synchrotrons
A focused optical is been used to introduce an optical pulse, or electromagnetic wave, colinearly with the electron beam in a free electron laser or synchrotron thereby adding an axial field...
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5790585 |
Grating coupling free electron laser apparatus and method
Free electron laser apparatus, for producing coherent electromagnetic radiation within a spectral range extending from millimeter to visible wavelengths, includes elements for generating an...
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5790573 |
High power free electron lasing device using electrostatic wigglers with recirculating beams between a pair of magnetic mirrors
An apparatus for producing high intensity laser radiation. A vacuum enclosure is provided which includes first and second magnets at each end, and a magnetic field applied along the length of the...
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5751747 |
Linear swept frequency generator
A linear swept frequency generator includes a signal generator that generates an output signal having a frequency that varies between a first frequency and a second frequency. A delay element, such...
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5723949 |
Spherical magnet structure and use thereof in wiggler radiation source
A spherical magnet structure having a cavity centrally disposed therein at an axis therethrough, is constructed to distribute a magnetic field in the cavity with the magnitude thereof varying...
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5719469 |
Spherical magnet having a gap with a periodically varying field for a wiggler radiation source
A spherical magnet structure having an axis about which an equatorial gap disposed into the periphery thereof, is constructed to sustain a magnetic field across the gap with the field magnitude...
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5663971 |
Axial interaction free-electron laser
Electron orbits from a helical axial wiggler in an axial guide field are absolutely unstable as power is extracted from the particles. For off-axis beams an axial FEL mechanism exists when the...
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H001615 |
Magnetic fields for chiron wigglers
A permanent magnet design including a Chiron Wiggler, which is able to produce a magnetic field to accelerate and focus electrons in a high frequency laser without the use of an externally powered,...
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5563568 |
Magnetic field generating apparatus for generating irrational-order-harmonic waves for use in an undulator
A plurality of magnetic poles provided by using magnets are arranged in opposition to one another in pairs. The pairs of magnetic poles are arranged with two kinds of intervals between the adjacent...
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