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| Number | Title | Issue Date |
| 8000373 | Methods and apparatus for generating RGB laser light A dual-cavity single longitudinal mode (SLM) laser oscillator generates a pulsed laser signal having a long pulsewidth, long coherence length, and good shot-to-shot energy stability. The laser oscillator has a first cavity between an output coupler and a rear mirror... | 08/16/2011 |
| 7961772 | Optimized pulse pumped laser system using feedback A laser system according to the invention comprises pump generating means (x02, x03) for generating at least a first and a second, preferably focused, pump beam, and lasing means (x06, x07) for emitting radiation by being appropriately pu... | 06/14/2011 |
| 7848381 | Multiple-wavelength tunable laser A tunable laser includes dispersion optics for separating generated laser pulses into first and second wavelength pulses directed along first and second optical paths. First and second reflective mirrors are disposed in the first and second optical paths, respective... | 12/07/2010 |
| 7813406 | Temporal laser pulse manipulation using multiple optical ring-cavities An optical pulse stretcher and a mathematical algorithm for the detailed calculation of its design and performance is disclosed. The optical pulse stretcher has a plurality of optical cavities, having multiple optical reflectors such that an optical path length in e... | 10/12/2010 |
| 7649924 | First-pulse suppression in a regenerative amplifier A regenerative amplifier includes a gain-medium that is optically pumped by CW radiation. The amplifier has primary resonator for amplifying pulses. The primary resonator has an optical switch for opening and closing the primary resonator. The amplifier has a second... | 01/19/2010 |
| 7633991 | Ultra-low heat laser An ultra-low heat laser that does not rely on florescence cooling. Generally, the inventive laser includes a pump source operable at a pump frequency and a gain medium disposed to receive energy from the source and lase at a frequency close to the pump frequency. In... | 12/15/2009 |
| 7443902 | Laser-based optical switches and logic 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 ... | 10/28/2008 |
| 7443903 | Laser apparatus having multiple synchronous amplifiers tied to one master oscillator Laser apparatus and methods involving multiple amplified outputs are disclosed. A laser apparatus may include a master oscillator, a beam splitter coupled to the master oscillator, and two or more output heads optically coupled to the beam splitter. The beam splitte... | 10/28/2008 |
| 7440643 | Variable light controlling device and variable light controlling method A variable light controlling device comprising a substrate, an optical waveguide disposed on the substrate, a first heater and a second heater to change the optical waveguide's temperature is fabricated. And a total amount of the power supplied to the first and the ... | 10/21/2008 |
| 7430039 | Sensor Sensors are provided which enable detection with a high sensitivity in microchemistry and biochemical analysis by using devices integrated into a compact configuration and can be freely disposed on desired positions of a channel to perform detection. A measur... | 09/30/2008 |
| 7376309 | Optical structure An optical structure comprising an optical resonator is provided. The optical resonator comprises a first set of nested closed optical regions, forming a distributed feedback resonator structure with a direction of radially alternating optical refractive index, and ... | 05/20/2008 |
| 7365369 | Nitride semiconductor device A nitride semiconductor device used chiefly as an LD and an LED element. In order to improve the output and to decrease Vf, the device is given either a three-layer structure in which a nitride semiconductor layer doped with n-type impurities serving as an n-type co... | 04/29/2008 |
| 7339969 | Refined mirror structure for reducing the effect of feedback on a VCSEL A VCSEL is provided that integrates an absorbing layer sandwiched within a null of the standing wave in the emitting mirror to reduce the reflectivity and transmissivity of the emitting mirror as seen by the feedback optical wave, with minimal effect on the reflecti... | 03/04/2008 |
| 7336691 | Apparatus for combining beams from repetitively pulsed lasers along a common path Two pulse sequences are delivered by two lasers. A rotating segmented mirror having one or more reflective areas and one or more transmissive areas is rotated synchronously with the delivery of the pulse sequences to transmit pulses from one sequence, and to reflect... | 02/26/2008 |
| 7333705 | Photonic crystal energy converter A photonic crystal is configured with wavelength converting material to act as a concentrator for electromagnetic energy. The concentrator may also be configured with energy conversion devices to convert the electromagnetic energy into another form of energy. ... | 02/19/2008 |
| 7333735 | Communication using VCSEL laser array Ultrafast directional beam switching, using coupled VCSELs is combined with a light modulator to provide information transfer at bit rates of tens of GHz. This approach is demonstrated to achieve beam switching frequencies of 32-50 GHz in some embodiments and direct... | 02/19/2008 |
| 7326876 | Sequential lateral solidification device A sequential lateral solidification device, for enhancing optical characteristics of the device and for preventing damage caused by an ablation of a crystallization thin film, is disclosed. The device includes a laser light source generating a laser beam, a projecti... | 02/05/2008 |
| 7317513 | Absolute distance measuring device An external cavity laser has an external cavity that is formed between a target surface and a laser diode facet located farthest from the target surface. A chromatic dispersive element is disposed in the external cavity, and focuses light from the laser diode such t... | 01/08/2008 |
| 7315562 | Stable/unstable optical cavity resonator for laser An improved resonator and optical cavity is adapted for use with a chemical laser that has a nozzle upstream of the resonator that emits a gain medium in a flow direction, and a pressure-recovery system downstream of the resonator. The optical resonator comprises fi... | 01/01/2008 |
| 7301977 | Tuneable unipolar lasers A unipolar semiconductor laser is provided in which an active region is sandwiched in a guiding structure between an upper and lower cladding layer, the lower cladding layer being situated on a semiconducting substrate. The unipolar semiconductor laser comprises a r... | 11/27/2007 |
| 7301981 | Methods for synchronized pulse shape tailoring A plurality of subresonators (12, 14), having different design configurations, share a common resonator section (18) such that the lasing action can be substantially synchronized to provide coherent laser pulses that merge the different respective puls... | 11/27/2007 |
| 7294862 | Photonic crystal light emitting device A photonic crystal structure is formed in an n-type layer of a III-nitride light emitting device. In some embodiments, the photonic crystal n-type layer is formed on a tunnel junction. The device includes a first layer of first conductivity type, a first layer of se... | 11/13/2007 |
| 7295581 | External cavity tunable optical transmitters External cavity optical transmitters are disclosed which include a gain chip and a mirror that define an optical cavity. The optical cavity may include collimating lenses, electro-optic crystals for controlled phase shift, and additional frequency selective optical ... | 11/13/2007 |
| 7289549 | Lasers for synchronized pulse shape tailoring A plurality of subresonators (12, 14), having different design configurations, share a common resonator section (18) such that the lasing action can be substantially synchronized to provide coherent laser pulses that merge the different respective puls... | 10/30/2007 |
| 7280567 | High-power red, orange, green, blue (ROGB) fiber lasers and applications thereof An all-fiber device platform for producing high-power ROGB or RGB laser output comprises an optical fiber including multiple waveguide gain regions embedded within a common inner cladding and within an outer cladding, an optical cavity defined by dielectric reflecto... | 10/09/2007 |
| 7262902 | High gain resonant modulator system and method An optical resonant modulator includes an optical ring resonator and an optical loop that is coupled to the optical ring resonator by two couplers. The optical ring resonator can have a hybrid design in which the ring resonator is formed on an electro-optically pass... | 08/28/2007 |
| 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 |
| 7260129 | Multipartite laser A device for emission of laser radiation includes at least one semiconductor laser having a resonator and a pumped active zone disposed within the resonator. The zone is subdivided into at least two spatially separated active zones by free-radiation regions without ... | 08/21/2007 |
| 7257142 | Semi-integrated designs for external cavity tunable lasers Semi-integrated external cavity diode laser (ECDL) designs including integrated structures comprising a gain section, phase control section, and optional modulator section. Each integrated structure includes a waveguide that passes through each of the sections. A mi... | 08/14/2007 |
| 7254155 | High power single mode vertical cavity surface emitting laser A single mode high power vertical cavity surface emitting laser (VCSEL) using photonic crystals. A photonic crystal is included in at least one mirror layer of a VCSEL. The reflectivity of the photonic crystal is dependent on the wavelength and incident angle of the... | 08/07/2007 |
| 7250635 | Light emitting system with high extraction efficency In an epitaxial structure of a solid state lighting system, electrical current injection into the active layer is used to excite the photon emission. The present invention employs a unique waveguide layer in the epitaxial structure for trapping the light generated b... | 07/31/2007 |
| 7248615 | Electrically-activated photonic crystal microcavity laser A microcavity structure includes a first waveguide that includes a first photonic crystal microcavity. A second waveguide includes a second photonic crystal microcavity. A microcavity active region is created by overlapping the first and second microcavities. ... | 07/24/2007 |
| 7245801 | Apparatus with a series of resonator structures situated near an optical waveguide for manipulating optical pulses Systems and method for manipulating optical pulses to implement an optical switch and for pulse shaping (e.g., pulse compression and/or compression) are disclosed. In one embodiment, the system comprises an optical switch apparatus that includes a plurality of reson... | 07/17/2007 |
| 7245424 | Amplification device utilizing thulium doped modified silicate optical fiber A device amplifies light at wavelengths in the vicinity of 1420-1530 nm, using thulium doped silica-based optical fiber. This wavelength band is of interest as it falls in the low-loss optical fiber telecommunications window, and is somewhat shorter in wavelength th... | 07/17/2007 |
| 7242697 | Wavelength selection device, wavelength selection laser, and tunable laser A wavelength selection filter, a wavelenth selection laser, and a tunable laser for suppressing adverse effects of non-selected light when selected light is obtained by the wavelength selection filter. A linear polarizer is arranged on a side of the wavelength selec... | 07/10/2007 |
| 7230967 | Waveguide laser A laser waveguide, where the laser waveguide can be formed by electrodes and at least one sidewall in a manner allowing a more compact structure than previously provided. Protrusions in the electrodes allow easier laser starts, and sectional sidewall(s) allow easier... | 06/12/2007 |
| 7221508 | Reflex-type screen The reflex-type screen includes an aluminum film reflecting layer for reflecting incident light, a lower adhesive layer which is made of adhesive agent, a polarization layer for transmitting the polarized light, a upper adhesive layer which is made of adhesive agent... | 05/22/2007 |
| 7221689 | Laser apparatus A laser apparatus capable of emitting laser beams of a plurality of different wavelengths includes: a solid-state laser medium which emits light of a plurality of different peak wavelengths; a resonance optical system which resonates the emitted light of the plurali... | 05/22/2007 |
| 7218660 | Single-mode vertical cavity surface emitting lasers and methods of making the same In one aspect, a vertical cavity surface emitting laser (VCSEL) is operable to generate single-mode laser light at an operative wavelength. The VCSEL includes a light-emitting surface and a monolithic longitudinal stack structure. The longitudinal stack structure in... | 05/15/2007 |
| 7218655 | Solid state laser insensitive to temperature changes A temperature insensitive diode-pumped solid state laser is disclosed in this invention. The components of the laser are optimized with temperature insensitive design, making the laser capable of operating in a wide temperature range without using any cooling/heatin... | 05/15/2007 |
