Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 8155160 | Method and device for igniting a fuel-air mixture in a combustion chamber of an internal combustion engine A device is provided for igniting a fuel-air mixture in a combustion chamber of an internal combustion engine with the aid of electromagnetic radiation, in particular light. The device includes at least two laser radiation sources, each having an optical resonator. ... | 04/10/2012 |
| 7983316 | Pulsed multiple colour laser system A pulsed multiple color laser system is disclosed having particular application for incorporation into a digital holographic printer for producing RGB color reflection holograms. A Nd:YLF crystal 1 in a laser cavity is excited to produce an emission at 1313 n... | 07/19/2011 |
| 7903705 | Short pulse laser device A short pulse laser arrangement with, preferably, passive mode-locking, comprising a resonator containing a laser crystal and several mirrors, one of which forms a pump beam coupling-in mirror and one of which forms a laser beam out-coupling mirror, and a multiple r... | 03/08/2011 |
| 7873085 | Method and device for controlling optical output of laser diode A method of controlling an optical output of a laser diode includes applying a bipolar current pulse to the laser diode, thereby substantially suppressing the emission tail of the optical output of the laser diode. A device for generating sub-nanosecond intense opti... | 01/18/2011 |
| 7787506 | Gain-switched fiber laser system This invention discloses a method to control laser dynamics in a gain-switched fiber laser so as to generate stable, clean pulses in an all-fiber format. The gain-switched fiber laser is suitable as a standalone laser source, and as a pump source for harmonic genera... | 08/31/2010 |
| 7738516 | Method and apparatus for detecting and avoiding multiple-pulse states in ultra-short-pulse laser In a detection method for undesired double- or multiple-pulse states in an ultra-short-pulse laser system operated in the soliton regime and intended for generating femtosecond or picosecond pulses, comprising an amplifying laser medium for producing a laser emissio... | 06/15/2010 |
| 7733930 | Error control for high-power laser system employing diffractive optical element beam combiner with tilt error control A high-power laser system includes a laser master oscillator, a plurality of fiber laser amplifiers producing intermediate output beamlets, a diffractive optical element for combining the intermediate beamlets into a combined output beam, and one or more error contr... | 06/08/2010 |
| 7729398 | Error control for high-power laser system employing diffractive optical element beam combiner A high-power laser system includes a laser master oscillator, a plurality of fiber laser amplifiers producing intermediate output beamlets, a diffractive optical element for combining the intermediate beamlets into a combined output beam, and one or more error contr... | 06/01/2010 |
| 7693195 | Semiconductor light emitting devices and methods A method for producing an optical output, including the following steps: providing first and second electrical signals; providing a bipolar light-emitting transistor device that includes collector, base, and emitter regions; providing a collector electrode coupled w... | 04/06/2010 |
| 7646795 | Methods and apparatus for maintaining a quality of a Raman medium in a Raman conversion cell Methods and apparatus for maintaining a quality of a Raman medium in a Raman conversion cell. In various examples, a flow velocity of the Raman medium is tailored based on a spatial nonuniformity of heat deposition resulting from the Raman conversion in the cell. In... | 01/12/2010 |
| 7616671 | Light source device, control method therefor, lighting device, monitor device, and image display device A light source device includes a light source for emitting a laser beam, a power supply drive circuit for pulse-driving the laser beam, a wavelength conversion element for converting a wavelength of a laser beam into a predetermined wavelength, a photodetector for d... | 11/10/2009 |
| 7609731 | Laser system using ultra-short laser pulses A laser system using ultrashort laser pulses is provided. In another aspect of the present invention, the system includes a laser, pulse shaper and detection device. A further aspect of the present invention employs a femtosecond laser and binary pulse shaping (BPS)... | 10/27/2009 |
| 7602825 | Tunable passively mode-locked lasers with phase-lock feedback for low timing jitters Techniques and devices to stabilize a passively mode-locked laser against the timing jitter by using a feedback control signal based on a signal component at a high harmonic frequency of the laser pulse repetition frequency in the laser output to control the optical... | 10/13/2009 |
| 7580432 | Scanning temporal ultrafast delay methods and apparatuses therefor The present invention is directed to methods and apparatuses for performing temporal scanning using ultra-short pulsewidth lasers in which only minimal (micro-scale) mechanical movement is required. The invention also relates to methods for obtaining high-accuracy t... | 08/25/2009 |
| 7567596 | Control system and apparatus for use with ultra-fast laser A control system and apparatus for use with an ultra-fast laser is provided. In another aspect of the present invention, the apparatus includes a laser, pulse shaper, detection device and control system. A multiphoton intrapulse interference method is used to charac... | 07/28/2009 |
| 7515618 | High power laser using controlled, distributed foci juxtaposed in a stimulate Brillouin scattering phase conjugation cell In the laser system of the present invention, an acoustic grating (AG) established in an SBS cell by an initial laser pulse is forced into oscillation from noise. Since the process is nonlinear, SBS Phase Conjugation does not take place until a specific level is ach... | 04/07/2009 |
| 7508853 | 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 ... | 03/24/2009 |
| 7424185 | Stretching and compression of laser pulses by means of high efficiency volume diffractive gratings with variable periods in photo-thermo-refractive glass High efficiency reflective volume Bragg gratings with chirped gratings recorded in photo-thermo-refractive glass having an absolute diffraction efficiency exceeding 95% in transmitting and reflecting modes are used to stretch and/or compress ultrashort laser pulses ... | 09/09/2008 |
| 7418017 | Interferometer, in particular for determining and stabilizing the relative phase of short pulses A description is given of an optical structure (100), in particular for determining and stabilizing the relative phase of short pulses, which contains a broadening device (6) for broadening the frequency spectrum of pulses of electromagnetic radiation,... | 08/26/2008 |
| 7403550 | Quasi-CW UV laser with low peak pulse-power An in vivo screening assay for identifying an agent that interferes with T cell activation and/or -differentiation and/or modulation of other inflammatory effector cells. ... | 07/22/2008 |
| 7388891 | Wide bandwidth light source PROBLEM TO BE SOLVED: to realize a wide bandwidth light source capable of a stable operation providing a less spectrum variation. SOLUTION: Optical pulses 202 outputted by this optical pulse-generating device 201 are split by optical coupler ... | 06/17/2008 |
| 7372880 | Optical pulse lasers The present invention provides pulsed lasers which employ carbon nanotubes, particularly layers of carbon nanotubes, as saturable absorbers, mode lockers or for Q-switching elements. The present invention also provides methods and materials for mode-locking and Q-sw... | 05/13/2008 |
| 7369152 | Laser marking method In a marking device, by illuminating a laser beam onto an X-ray film which is a light-photosensitive heat-developing photosensitive material, an inner portion of a surface layer is melted, a cavity is formed, and a dot, which projects a surface out in a convex shape... | 05/06/2008 |
| 7359412 | Laser apparatus, laser irradiation method, and manufacturing method of semiconductor device It is an object to provide a laser apparatus, a laser irradiating method and a manufacturing method of a semiconductor device that make laser energy more stable. To attain the object, a part of laser beam emitted from an oscillator is sampled to generate an electric... | 04/15/2008 |
| 7356056 | Coherent light source and control method thereof, and display unit and laser display using them In a display device that displays a video by scanning coherent light across a screen, modulation at high speeds and gradation are necessary for a coherent light source. An oscillation wavelength of a semiconductor laser outputting the fundamental wave is chan... | 04/08/2008 |
| 7349452 | Bragg fibers in systems for the generation of high peak power light The present invention generally concerns the use of Bragg optical fibers in chirped pulse amplification systems for the production of high-pulse-energy ultrashort optical pulses. A gas-core Bragg optical fiber waveguide can be advantageously used in such systems to ... | 03/25/2008 |
| 7349451 | Harmonic pulse laser apparatus, and method for generating harmonic pulse laser beams A KTP crystal is irradiated by a long-pulse fundamental wave pulse laser beam having a pulse width of 100 μs or longer typically output from a solid-state pulse laser such as a YAG pulse laser. In the KTP crystal, wavelength conversion is performed to generate a se... | 03/25/2008 |
| 7348516 | Methods of and laser systems for link processing using laser pulses with specially tailored power profiles A laser pulse with a specially tailored temporal power profile, instead of a conventional temporal shape or substantially square shape, severs an IC link. The specially tailored laser pulse preferably has either an overshoot at the beginning of the laser pulse or a ... | 03/25/2008 |
| 7346084 | Device for generating lossless pulse ultraviolet laser beam There is provided a device for generating a lossless pulse ultraviolet laser beam of generating a laser beam having a desired wavelength by repeatedly rotating a laser beam generated by a pulse ytterbium fiber laser several times. The device includes a pulse ytterbi... | 03/18/2008 |
| 7330271 | Electromagnetic resonant sensor with dielectric body and variable gap cavity An electromagnetic resonant sensor has a dielectric sensor body through which electromagnetic wave energy is propagated. The sensor body has a cavity, with surfaces facing one another to define a gap that varies as a function of a parameter to be measured. The reson... | 02/12/2008 |
| 7326948 | Beam modifying device, lithographic projection apparatus, method of treating a beam, and device manufacturing method A beam modifying device configured to receive an input radiation beam along a first optical axis, and configured to emit an output radiation beam along a second optical axis. The beam modifying device includes a divider disposed along the first optical axis and conf... | 02/05/2008 |
| 7327769 | Injection locking Q-switched and Q-switched cavity dumped COlasers for extreme UV generation A CO2 laser reference oscillator (RO) can provide injection seeding to a Q-switched (QS) or Q-switched cavity dumped (QSCD) CO2 laser, where the output frequency of the RO laser is locked to the peak of the laser line by the use of appropriate ... | 02/05/2008 |
| 7323670 | Laser operation for survey instruments The performance of a laser scanner is optimized in the field by automatically determining appropriate laser parameters for the scan location. A laser control system uses information such as the environmental temperature to select an appropriate range of start points... | 01/29/2008 |
| 7321605 | Helical optical pulse stretcher A pulse stretcher includes a single pass pulse stretcher. An optical system is arranged around the single pass pulse stretcher. A beam enters the single pass stretcher and is reflected in a helical path using the optical system for multiple passes through the single... | 01/22/2008 |
| 7321607 | External optics and chamber support system A gas discharge laser and method of operating same is disclosed which may comprise a gas discharge laser chamber support structure comprising a first support arm attached to a mounting table; a gas discharge laser chamber slideably engaging the first support arm; an... | 01/22/2008 |
| 7321468 | Method and optical arrangement for beam guiding of a light beam with beam delay A method for beam guiding of a light beam generated by a light source to a target location along a path distance LS, comprises splitting the light beam on the path distance LS at least once into a first partial beam and a second partial beam, g... | 01/22/2008 |
| 7317740 | Mode locker for fiber laser A mode locking device of fiber laser includes a bar structural body, having a central hollow region, extending along a reference line of the bar structural body. The central hollow region has two ends coupled with two collimators on a fiber laser loop. A polarizatio... | 01/08/2008 |
| 7304288 | Laser pulse counter Pulses of optical radiation are counted by a pulse counter in a way representative of its effects on tissue. An analog to digital converter digitizes detected optical radiation pulses and an integrator integrates the digitally detected pluses. The integrator has a t... | 12/04/2007 |
| 7286580 | Method for pulse control in a laser including a stimulated brillouin scattering mirror system A laser system, such as a master oscillator/power amplifier system, comprises a gain medium and a stimulated Brillouin scattering SBS mirror system. The SBS mirror system includes an in situ filtered SBS medium that comprises a compound having a small negative non-l... | 10/23/2007 |
| 7286764 | Reconfigurable modulator-based optical add-and-drop multiplexer An optical add and drop multiplexer system comprising a first module for providing a first signal; a second module for providing a second signal; and a modulator for receiving a channel of the first signal at a first location, the first location configured to actuat... | 10/23/2007 |
