Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8179932 | Pulse laser apparatus, terahertz measuring apparatus, and terahertz tomographic apparatus A pulse laser apparatus includes a laser configured to generate a pulse of a laser beam, a fiber amplifier, and a pulse compressor. The fiber amplifier includes a rare-earth doped fiber that exhibits normal dispersion at a wavelength of the laser beam generated from... | 05/15/2012 |
| 8160113 | Tailored pulse burst Output pulses from an optical system having a seed source and an optical amplifier coupled to the seed source may be controlled by controlling a power of a seed signal from the seed source. The seed signal may be varied between a minimum value and a maximum value in... | 04/17/2012 |
| 8144739 | System method and apparatus for selecting and controlling light source bandwidth The bandwidth selection mechanism includes a first actuator mounted on a second face of a dispersive optical element, the second face being opposite from a reflective face, the first actuator having a first end coupled to a first end block and a second end coupled t... | 03/27/2012 |
| 8135049 | Optical pulse generating apparatus using photoelectric effect of surface plasmon resonance photons and its manufacturing method In an optical pulse generating apparatus including a metal layer having an incident/reflective surface adapted to receive incident light and output its reflective light as an optical pulse signal, a dielectric layer formed on an opposite surface of the metal layer o... | 03/13/2012 |
| 8094691 | Yb: and Nd: mode-locked oscillators and fiber systems incorporated in solid-state short pulse laser systems The invention describes classes of robust fiber laser systems usable as pulse sources for Nd: or Yb: based regenerative amplifiers intended for industrial settings. The invention modifies adapts and incorporates several recent advances in FCPA systems to use as the ... | 01/10/2012 |
| 8081668 | High energy pulse suppression method A laser processes a workpiece with laser pulses delivered at random time intervals and at substantially constant energy levels by characterizing the laser cavity discharge behavior and utilizing that information for adjusting dummy pulse time periods to compensate f... | 12/20/2011 |
| 8081669 | Method of driving laser diode device and laser diode equipment A method of driving an ultrashort pulse and ultrahigh power laser diode device having a simple composition and a simple structure is provided. In the method of driving a laser diode device, light is injected from a light injection means into a laser diode device dri... | 12/20/2011 |
| 8077749 | Pulsed laser source with adjustable grating compressor Various embodiments described herein relate to a laser source for producing a pulsed laser beam comprising a plurality of ultrashort optical pulses having a variable repetition rate. In one embodiment, the laser source comprises a fiber oscillator, which outputs opt... | 12/13/2011 |
| 8073025 | Laser light source The present invention relates to a laser light source having a structure for narrowing a wavelength bandwidth of output light. The laser light source comprises, at least, a laser resonator, a pumping light source, an optical path switch device, a diffraction grating... | 12/06/2011 |
| 8068522 | Hyper dispersion pulse compressor for chirped pulse amplification systems A grating pulse compressor configuration is introduced for increasing the optical dispersion for a given footprint and to make practical the application for chirped pulse amplification (CPA) to quasi-narrow bandwidth materials, such as Nd:YAG. The grating configurat... | 11/29/2011 |
| 8023538 | Ultra-high power parametric amplifier system at high repetition rates Embodiments of parametric chirped pulse amplifiers seeded with a single pulse source which is subsequently split into a signal arm and a pump arm with appropriate signal and pump conditioning stages are disclosed, which advantageously improve the utility of high ave... | 09/20/2011 |
| 8023537 | Optical pulse train generator An optical pulse train generator 10 includes beat light generation means 11 for generating a beat light 21 having a predetermined repeated frequency, a highly nonlinear fiber 12 for generating a pulse train 22 formed by adding a si... | 09/20/2011 |
| 8009707 | Dual mode single cavity pulse compressor An rf pulse compressor has a single high Q cavity resonator fed by a four port hybrid coupler which is connected to the resonator at coupling ports located at the intersection of two of the resonator's orthogonal axes with the resonator cavity walls. The hybrid coup... | 08/30/2011 |
| 7991027 | Apparatus and method for generating optical-seed pulses for high-powered fiber-laser amplifier systems Apparatus and method for generating controlled-linewidth laser-seed-signals for high-powered fiber-laser amplifier systems. In some embodiments, the natural chirp (frequency change of laser light over a short start-up time) of a DBR laser diode when driven by pulsed... | 08/02/2011 |
| 7974321 | Method and arrangement for stabilizing the average emitted radiation output of a pulsed radiation source The invention is directed to a method and an arrangement for stabilizing the average emitted radiation output of a pulsed radiation source. It is the object of the invention to find a novel possibility for stabilizing the average emitted radiation output of a pulsed... | 07/05/2011 |
| 7970026 | Multiple output repetitively pulsed laser A continuously pumped, mode-locked laser is disclosed, which includes a cavity dumper that can remove a constant fraction of the light from the cavity at every 1/f period of time, independent of the time at which the first pulse in a train is initiated. The cavity d... | 06/28/2011 |
| 7970027 | Electromagnetic energy distributions for electromagnetically induced mechanical cutting Output optical energy pulses including relatively high energy magnitudes at the beginning of each pulse are disclosed. As a result of the relatively high energy magnitudes which lead each pulse, the leading edge of each pulse includes a relatively large slope. This ... | 06/28/2011 |
| 7961764 | Nonlinear imaging using passive pulse splitters and related technologies An apparatus includes a pulsed laser source that produces a pulsed laser beam at an input repetition rate and an input pulse power, a passive pulse splitter that receives the pulsed laser beam and outputs a signal including a plurality of sub-pulses for each input p... | 06/14/2011 |
| 7961763 | System for detection of wafer defects Fast on-line electro-optical detection of wafer defects by illuminating with a short light pulse from a repetitively pulsed laser, a section of the wafer while it is moved across the field of view of an imaging system, and imaging the moving wafer onto a focal plane... | 06/14/2011 |
| 7957435 | Electronically controlled optical scanning A device for generating light pulses that are separated in terms of time has a light source that emits a sequence of light pulses. A regulation signal is formed within a regulation circuit from a cycle signal and the light pulse sequence of the light sources via a p... | 06/07/2011 |
| 7957436 | Laser for providing pulsed light and reflectometric apparatus incorporating such a laser A laser for generating laser light pulses comprises a cavity containing an active optical gain medium (102) and a spectral filtering device (104), a delay device (110) for delaying light by a predetermined delay time (Δt), means (106) fo... | 06/07/2011 |
| 7953130 | Pulse laser apparatus, terahertz measuring apparatus, and terahertz tomographic apparatus A pulse laser apparatus includes a laser configured to generate a pulse of a laser beam, a fiber amplifier, and a pulse compressor. The fiber amplifier includes a rare-earth doped fiber that exhibits normal dispersion at a wavelength of the laser beam generated from... | 05/31/2011 |
| 7949021 | Light source apparatus The present invention relates to a light source apparatus having a structure to enable a short pulse optical output with high pulse energy or a high pulse peak equivalent to that of a Q switch laser light source. The light source apparatus comprises a seed light sou... | 05/24/2011 |
| 7894493 | Ultrashort seed-pulse generating laser with integral pulse shaping An ultrafast laser for delivering ultra-short duration seed-pulses for further amplification has a resonator including negative group delay dispersion (NGDD) mirrors for minimizing increases in the duration of the pulses due to positive group delay dispersion effect... | 02/22/2011 |
| 7839905 | Carrier-envelope phase shift using linear media The carrier-envelope phase in a train of optical pulses is varied utilizing the dispersive properties of lossless plates while the total dispersion in transmission is maintained practically constant. The plates include sloped surfaces and are mounted for displacemen... | 11/23/2010 |
| 7835409 | Illumination light source device and laser projection device An illumination light source is provided with a laser light source having a laser medium with a specified gain region, and a reflector having a narrow band reflection characteristic. A part of a laser light emitted from the laser light source is reflected and fed ba... | 11/16/2010 |
| 7817687 | Electromagnetic energy distributions for electromagnetically induced mechanical cutting Output optical energy pulses including relatively high energy magnitudes at the beginning of each pulse are disclosed. As a result of the relatively high energy magnitudes which lead each pulse, the leading edge of each pulse includes a relatively large slope. This ... | 10/19/2010 |
| 7817686 | Laser micromachining using programmable pulse shapes Laser pulse shaping techniques produce tailored laser pulse spectral output. The laser pulses can be programmed to have desired pulse widths and pulse shapes (such as sub-nanosecond to 10 ns-20 ns pulse widths with 1 ns to several nanoseconds leading edge rise times... | 10/19/2010 |
| 7817685 | Methods and systems for generating pulse trains for material processing Systems and methods generate laser pulse trains for material processing. In one embodiment, stable laser pulse trains at high repetition rates are generated from a continuous wave (CW) or quasi-CW laser beams. One or more laser pulses in the laser pulse train may be... | 10/19/2010 |
| 7804866 | Pulse stretcher A pulse stretcher includes a plurality of substantially parallel slab-like optical paths of different optical path lengths and a plurality of reflecting surfaces, which are totally internally reflecting surface formed, located at an end of the corresponding optical ... | 09/28/2010 |
| RE41690 | Laser processing method Method of processing, e.g., laser annealing, objects such as semiconductor devices with pulsed lasers with high production yield and high reproducibility so as to obtain good characteristics stably. The pulse width of the irradiated pulse beam is set to more than 30... | 09/14/2010 |
| 7782914 | Device and method for high-energy particle pulse generation A device for generating a high-energy particle pulse is provided which comprises a laser system producing laser pulses with pulse length shorter than 100 fs (femtoseconds), and capable to be focused to peak intensities greater than 10A18 W/cmA2, preferred greater th... | 08/24/2010 |
| 7706420 | Optical power modulation at high frequency An apparatus for providing a pulsed radiation beam has a radiation source providing a pulsed radiation beam at a constant pulse repetition frequency. A beam deflector in the path of the pulsed radiation beam is actuable to redirect the pulsed radiation beam cyclical... | 04/27/2010 |
| 7701987 | Apparatus and method for generating chirp-slice controlled-linewidth laser-seed signals Apparatus and method for generating controlled-linewidth laser-seed-signals for high-powered fiber-laser amplifier systems. In some embodiments, the natural chirp (frequency change of laser light over a short start-up time) of a DBR laser diode when driven by pulsed... | 04/20/2010 |
| 7684450 | Pulsed laser source with adjustable grating compressor Various embodiments described herein relate to a laser source for producing a pulsed laser beam comprising a plurality of ultrashort optical pulses having a variable repetition rate. In one embodiment, the laser source comprises a fiber oscillator, which outputs opt... | 03/23/2010 |
| 7680158 | LPP type extreme ultra violet light source apparatus and driver laser for the same A driver laser for EUV light source apparatus which driver laser simultaneously achieves short-pulsing and multi-line oscillation. The driver laser includes: a short-pulse multi-line oscillated CO2 laser oscillator having a device that shortens width of p... | 03/16/2010 |
| 7664149 | Auto-stabilization of lasers by means of resonant structures Apparatus, systems, and methods are provided that utilize a material inserted into a laser cavity such that the material has an optical length that varies as the laser cavity varies to keep the repetition rate constant. The material may provide auto-stabilization of... | 02/16/2010 |
| 7656913 | Fiber pulse laser apparatus and method of controlling the same A method of controlling a pulse output in a master oscillator-power amplifier type fiber pulse laser apparatus including a master oscillator unit and a power amplifier unit connected to the master oscillator unit is provided. The method includes starting the master ... | 02/02/2010 |
| 7646794 | Laser apparatus and manufacturing method of a battery A laser apparatus is provided which is capable of achieving deep penetration into an aluminum-like metal material without causing welding defects such as spatters or cracks and performing high-speed pulse seam welding. The laser apparatus includes a pulse power sour... | 01/12/2010 |
| 7643521 | Material processing system with variable repetition rate laser A system for using a pulsed laser beam to process materials includes a selector for varying the pulse repetition rate of the laser beam. Also included is a control unit for identifying an optimal pulse repetition rate that is compatible with the required pulse energ... | 01/05/2010 |
