Quotables
"Everyone acquainted with the subject will recognize it as a conspicuous failure."
Henry Morton, president of the Stevens Institute of Technology ; Said in 1880 about the light bulb
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7869474 | Fast wavelength tuning techniques for external cavity lasers An apparatus comprising a laser source configured to emit a light beam along a first path, an optical beam steering component configured to steer the light beam from the first path to a second path at an angle to the first path, and a diffraction grating configured ... | 01/11/2011 |
| 7693194 | Fundamental-wave light source and wavelength converter A reflection element 3 disposed in an optical waveguide element 2 returns a part of light to a semiconductor laser diode element 1 so that the semiconductor laser diode element 1 oscillates in a coherent collapse mode, and a semiconductor... | 04/06/2010 |
| 7583712 | Optoelectronic device and method of making same A light emitting device is disclosed that emits light from the surface in a broad spectral range and in a broad range of angles tilted with respect to the direction normal to the exit surface. An apparatus for generating wavelength-stabilized light is formed of a li... | 09/01/2009 |
| 7444083 | Optical fiber transmission system with a plural emitting point transmitter In an optical signal transmission system which can perform high-speed optical transmission not lower than 1 Gbps, VCSEL has light-emission points. A core diameter of an optical fiber GI-POF is set to not lower than 200 μm, and the light-emission points of VCSEL are... | 10/28/2008 |
| 7436867 | Hermetically sealed external cavity laser system and method A laser apparatus in a hermetically sealed container and methods for hermetically sealing the laser. The laser apparatus comprising an external cavity laser and a modulator in a single hermetically sealed enclosure. ... | 10/14/2008 |
| 7426227 | Semiconductor laser device, optical disk apparatus and optical integrated unit A semiconductor laser device includes: a first cladding layer, which is made of a nitride semiconductor of a first conductivity type and is formed over a substrate; an active layer, which is made of another nitride semiconductor and is formed over the first cladding... | 09/16/2008 |
| 7394840 | Virtual optical axis determination using machine vision for passive optical alignment Alignment of a laser apparatus is achieved by actively aligning components of the laser apparatus and then passively deriving an optical axis from that alignment. This passive derivation can be achieved by identifying features of an actively aligned optical element,... | 07/01/2008 |
| 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 |
| 7351601 | Methods of forming nanocavity laser structures Optical switches and logic devices comprising microstructure-doped nanocavity lasers are described. These switches and logic devices have gain and thus can be cascaded and integrated in a network or system such as for example on a chip. Exemplary switching elements ... | 04/01/2008 |
| 7339965 | Optoelectronic device based on an antiwaveguiding cavity A semiconductor optoelectronic device includes at least one cavity and one multilayered interference reflector. The cavity is designed preferably to possess properties of an antiwaveguiding cavity, where no optical modes propagate in the lateral plane. The existing ... | 03/04/2008 |
| 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 |
| 7293463 | Acoustoelectric conversion device In an acoustoelectric converter element, a light wave from a light source is introduced into a first optical waveguide of a vibration substrate, and diffracted by a diffraction grating disposed on the first optical waveguide. The diffracted light is directed to and ... | 11/13/2007 |
| 7286582 | Optical external cavities having brewster angle wedges This invention consists of an optical external cavity having specialized Brewster angle wedges. The external cavity apparatus utilizes several types of very high index of refraction wedges made from semiconductor and special glass materials. The apparatus limits the... | 10/23/2007 |
| 7259904 | Coarse spectrometer with a grating A quasi-monochromatic light beam carrier for a particular telecommunication channel is likely to experience drift because of age, temperature, or other factors, and may cause the centroid wavelength of the carrier to shift. Temperature adjustments by wavelength lock... | 08/21/2007 |
| 7230960 | Tunable external cavity laser with adjustable cavity length and mode-hop suppression Tunable external cavity lasers are used in applications such as interferometry, FM spectroscopy, and optical communications equipment testing. Mode hop free high bandwidth frequency modulation operation is desired in a tunable external cavity laser. This application... | 06/12/2007 |
| 7164699 | Compact, high-power, low-jitter, semiconductor modelocked laser module A low-jitter optical pulse source including: a monolithic waveguide including a first section substantially perpendicular to a first facet and a second section being curved and substantially non-perpendicular to a second facet; and, an optical circulator coupled to ... | 01/16/2007 |
| 7158548 | Laser cavity A laser cavity comprising a gain medium and first and second end mirrors, wherein the laser cavity further comprises a birefringent material and a mirror arranged to fold light propagating within the laser cavity through a predetermined angle, wherein the predetermi... | 01/02/2007 |
| 7134343 | Opto-acoustoelectric device and methods for analyzing mechanical vibration and sound An opto-acoustoelectric device encompasses a diaphragm having a diffraction grating, the diaphragm is susceptible to a vibration driven by an external force; a light source oriented to irradiate the diffraction grating; and a photo detector configured to detect the ... | 11/14/2006 |
| 7127129 | Method and apparatus for phase shifting an optical beam in an optical device An apparatus and method for high speed phase modulation of optical beam with reduced optical loss. In one embodiment, an apparatus includes a first region of an optical waveguide disposed in semiconductor material. The first region has a first conductivity type. The... | 10/24/2006 |
| 7099364 | Vertical-cavity surface-emitting laser device array and method of manufacturing the same A plurality of vertical-cavity surface-emitting laser devices each having a different lasing wavelength are arrayed by a simple structure and a manufacturing process without increasing device resistance. Each vertical-cavity surface-emitting laser device comprises a... | 08/29/2006 |
| 7095776 | Interferometric filter wavelength meter and controller A wavelength measurement system uses birefringent material waveplate, thereby producing a substantially sinusoidal spectral response. As a result, the responses of multiple birefringent filters can be combined to yield a filter system with a periodic frequency respo... | 08/22/2006 |
| 7088750 | Adjustable laser module An adjustable laser module has a main body, a laser generator provided in the hollow interior of the main body at a first end thereof for emitting a laser beam, a cylindrical lens provided in the hollow interior at a second end thereof, a first adjusting device coup... | 08/08/2006 |
| 7038781 | Time correlation of ultrafast laser pulses Time-correlation methods for determining pulse characteristics from a modelocked ultrafast laser include a cross-correlation method and an auto-correlation method. In the cross-correlation method, pulses from the laser and pulses from another modelocked laser are in... | 05/02/2006 |
| 7035302 | Optical transmission module The present invention provides an optical transmission module having a laser diode that generates laser beams and a differential type current switch provided with a first switch and a second switch in order to supply a modulating current to the laser diode. A termin... | 04/25/2006 |
| 7012940 | Laser resonator and adjustment method The present invention has the object of offering a laser resonator capable of maintaining high amplification efficiency even if the thermal lensing effect occurring in the laser medium varies during operation or over repeated operation and suspension of the laser de... | 03/14/2006 |
| 7003005 | Simplified laser oscillator-amplifier system The present invention contemplates a simplified laser oscillator-amplifier system for deep UV generation. The simplified system employs same type of gain media in both the oscillator and the amplifier and utilizes a single pump pulse split to pump both the oscillato... | 02/21/2006 |
| 7003438 | Apparatus for correcting for the effects of laser noise Adaptive noise reduction techniques used in devices that pass light from a laser through a quantum medium such as a rubidium vapor cell. A CPT frequency standard that employs the techniques has a first channel in which the laser light passes through the quantum medi... | 02/21/2006 |
| 6973106 | Optical package and optical systems apparatuses, and methods of use therein Optical systems of the present invention include optical devices, such as lasers and other optical sources, that are packaged, or housed, in a structure employing a high thermal conductivity, low effective thermal mass member, such as a heat pipe. The high thermal c... | 12/06/2005 |
| 6954474 | Method and apparatus for backside monitoring of VCSELs A VCSEL (vertical cavity surface emitting laser) is formed on the top surface of the substrate having an opposed bottom surface. In one exemplary embodiment, the opposed bottom surface is polished and coated with an anti-reflective coating. A photodetector is dispos... | 10/11/2005 |
| 6930822 | Wavelength locker Wavelength stability of an optical oscillator has been enhanced by feedback from an external position-sensing detector to control the position or tilt of an intracavity optical element, such as a mirror. The wavelength stability results from stabilization of the int... | 08/16/2005 |
| 6804283 | Compact electrically and optically pumped multi-wavelength nanocavity laser, modulator and detector arrays and method of making the same A compact, electrically and optically pumped multi-wavelength nanocavity laser, modulator and detector array uses lithography to define the precise spectral response of each element. High fields are applied within optical nanocavities to take advantage of photonic c... | 10/12/2004 |
| 6768756 | MEMS membrane with integral mirror/lens An optical membrane device and method for making such a device are described. This membrane is notable in that it comprises an optically curved surface. In some embodiments, this curved optical surface is optically concave and coated, for example, with a highly refl... | 07/27/2004 |
| 6714565 | Optically tunable Fabry Perot microelectromechanical resonator A tunable optical resonator whose resonance frequency is determined by a light signal introduced into the resonator. The resonator includes an optical cavity having a first mirror and a second mirror. The first mirror and second mirror are supported relative to one ... | 03/30/2004 |
| 6704333 | Large area laser A large area slab laser, wherein disharge is confined between two large area electrodes. A two dimensional array of inductors is placed across the electrodes so that the standing wave patterns associated with the propagation of the high frequency driving ... | 03/09/2004 |
| 6687269 | Spread spectrum dither for locking to transmission peak in tunable laser An apparatus including a cavity optical length actuator to vary a cavity optical path length of a laser in response to an excitation signal having varying frequencies. The cavity optical length actuator induces intensity perturbations in an optical beam o... | 02/03/2004 |
| 6628682 | Wavelength detection device for line-narrowed laser apparatus and ultra line-narrowed fluorine laser apparatus Of spontaneous emission beams emitted from a laser medium but not line-narrowed, a spontaneous emission beam whose wavelength approximates a narrowed emission beam and whose light intensity is equal to or higher than a certain level is used as a reference... | 09/30/2003 |
| 6594294 | Segmented-mirror VCSEL A segmented-mirror vertical cavity surface emitting laser includes an active portion with an active region having at least one quantum well and a lateral dimension. A first mirror stack is positioned on a first opposed major surface of the active portion ... | 07/15/2003 |
| 6495381 | Apparatus and method for forming aperture of vertical cavity surface emitting laser by selective oxidation An apparatus and method for forming an aperture of a vertical cavity surface emitting laser (VCSEL) by selective oxidation, in which resonance peak variations during the formation of the aperture can be measured using an optical spectrum analyzer, so that... | 12/17/2002 |
| 6393036 | Device for a method of pulsing and amplifying singlemode laser light A device for and a method of pulsing and amplifying a singlemode laser light for use in a pulse oscillation laser is disclosed. The device comprises a singlemode laser for generating the laser light of the singlemode, an optical resonator into which the o... | 05/21/2002 |
| 6287298 | Diode pumped, multi axial mode intracavity doubled laser A diode pumped, multi axial mode, intracavity doubled laser has at least two resonator mirrors that define a resonator cavity. A Nd:YVO4 laser crystal and a LBO doubling crystal are positioned in the resonator cavity. A diode pump source suppli... | 09/11/2001 |
