Stackable electrically-isolated diode-laser bar assembly
Granted: April 10, 2018
Patent Number:
9941658
A diode-laser bar assembly comprises a diode-laser bar mounted onto a cooler by way of an electrically-insulating submount. A laminated connector is provided that includes two electrically-conducting sheets bonded to opposite sides on an electrically-insulating sheet. An electrical insulator is located between the laminated connector and the cooler. One electrically-conducting sheet is connected to n-side of the diode-laser bar and the other electrically-conducting sheet is connected to…
Fiber-laser pumped crystal-laser
Granted: April 10, 2018
Patent Number:
9941654
An apparatus for generating and amplifying laser beams at approximately 1 micrometer wavelength is disclosed. The apparatus includes an ytterbium-doped gain-crystal pumped by an ytterbium fiber-laser. The fiber-laser enables a pump wavelength to be selected that minimizes heating of the gain-crystal. The apparatus can be configured for generating and amplifying ultra-fast pulses, utilizing the gain-bandwidth of ytterbium-doped gain-crystals.
Carbon monoxide laser machining system
Granted: March 27, 2018
Patent Number:
9925620
Laser-machining apparatus includes a carbon monoxide (CO) laser emitting a beam of laser-radiation having forty-four different wavelength components and optical elements for delivering the radiation to workpiece. An acousto-optic modulator is provided for modulating the beam on the workpiece. A birefringent plate is provided in the beam transported to the workpiece for randomly polarizing radiation incident on the workpiece. A minimum distance of the workpiece from the laser, and the…
Shaping of brittle materials with controlled surface and bulk properties
Granted: March 20, 2018
Patent Number:
9919380
Methods of and devices for forming edge chamfers and through holes and slots on a material that is machined using a laser, such as an ultrafast laser. The shaped material has predetermined and highly controllable geometric shape and/or surface morphology. Further, a method of and a device for preventing re-deposition of the particles on a material that is machined using a laser, such as an ultrafast laser. A fluid is used to wash off the particles generated during the laser machining…
Cooling apparatus for diode-laser bars
Granted: March 13, 2018
Patent Number:
9917413
A cooler for diode-laser bars comprises a machined base including a water-input plenum and a water-output plenum, and a top plate on which the diode-laser bars can be mounted. A stack of three etched plates is provided between the base and first plate. The stack of etched plates is configured to provide a five longitudinally spaced-apart rows of eight laterally spaced-apart cooling-channels connected to the water-input and water-output plenums. Water flows in the cooling-channels and in…
Parameterized radio waveform techniques for operating in multiple wireless environments
Granted: March 6, 2018
Patent Number:
9913153
Techniques for operating a wireless network in a plurality of radio operating environments are disclosed. In some embodiments, an apparatus receives a first parameter value set that is selected from a group of multiple parameter value sets, wherein the first parameter value set is appropriate for a first target radio operating environment that corresponds to one or more of: a first level of mobility of user devices or a first range of wireless transmission. In some embodiments, the…
Optically pumped semiconductor laser with mode tracking
Granted: February 27, 2018
Patent Number:
9905991
An intra-cavity doubled OPS-laser has a laser-resonator including a birefringent filter (BRF) for coarse wavelength-selection, and an optically nonlinear (ONL) crystal arranged for type-II frequency-doubling and fine wavelength-selection. Laser-radiation circulates in the laser-resonator at one of a range of fundamental wavelengths dependent on the resonator length. The ONL crystal has a transmission peak-wavelength dependent on the crystal temperature. Reflection of circulating…
Multiprocessor programming toolkit for design reuse
Granted: February 27, 2018
Patent Number:
9904542
Techniques for specifying and implementing a software application targeted for execution on a multiprocessor array (MPA). The MPA may include a plurality of processing elements, supporting memory, and a high bandwidth interconnection network (IN), communicatively coupling the plurality of processing elements and supporting memory. In one embodiment, software code may include first program instructions executable to perform a function. In this embodiment, the software code may also…
Multimedia streams which use control information to associate audiovisual streams
Granted: February 20, 2018
Patent Number:
9900364
A system and method for wirelessly transmitting audiovisual information. A first plurality of packets including audiovisual information may be generated. A second plurality of packets including error correction coding information for the audiovisual information may be generated. Control information for associating the error correction coding information with the audiovisual information may be generated, and a third plurality of packets including the control information may also be…
Filamentary cutting of brittle materials using a picosecond pulsed laser
Granted: January 23, 2018
Patent Number:
9873628
In pulsed-laser apparatus for filamentary cutting a glass-sheet, a laser-beam is focused by a plano-convex focusing lens into the glass-sheet through a first surface of the sheet to a point close to a second surface of the sheet. Pulses from the laser are delivered in repeated bursts. The laser-beam fills the clear-aperture of the lens such that uncorrected spherical aberration in the focusing lens causes radial modulation of the beam between the lens and the focus point. This provides…
Apparatus for generating a line-beam from a diode-laser array
Granted: December 26, 2017
Patent Number:
9851571
Apparatus for generating a line-beam includes a diode-laser bar, a linear micro-lens array, and a plurality of lenses spaced apart and arranged along an optical axis. The linear micro-lens array and the lenses shape laser-radiation emitted by the diode-laser bar to form a uniform line-beam in an illumination plane. The lenses project a far-field image of the diode-laser bar onto an image plane proximate to the illumination plane. The diode-laser bar is rotated from parallel alignment…
Uniformity adjustment method for a diode-laser line-projector
Granted: October 10, 2017
Patent Number:
9784957
In a line projector a diode-laser beam having an elliptical cross-section is projected onto a Powell lens which spreads the beam to form a line of light. Distribution of power along the line of light is adjusted by rotating the diode-laser beam with respect to the Powell lens.
Capacitor assembly
Granted: September 19, 2017
Patent Number:
9767958
An electrical capacitor includes a dielectric spacer. Metal electrodes are held in contact with opposite surfaces of the dielectric spacer by magnetic force.
Parameterized radio waveform for operating in multiple wireless environments
Granted: August 29, 2017
Patent Number:
9749879
A method for operating a wireless network in a plurality of radio operating environments is disclosed. A first parameter value set is selected from a library of two or more parameter value sets. Each of the parameter value sets includes a value for each of one or more communication-related parameters. The first parameter value set is appropriate for a first target radio operating environment. The action of selecting the first parameter value set is performed for a first set of one or…
Processing system with interspersed processors with multi-layer interconnection
Granted: August 1, 2017
Patent Number:
9720867
Embodiments of a multi-processor array are disclosed that may include a plurality of processors and configurable communication elements coupled together in a interspersed arrangement. Each configurable communication element may include a local memory and a plurality of routing engines. The local memory may be coupled to a subset of the plurality of processors. Each routing engine may be configured to receive one or more messages from a plurality of sources, assign each received message…
Reconfigurable photonic integrated circuit focal plane array
Granted: July 18, 2017
Patent Number:
9709668
A reconfigurable photonic integrated circuit focal plane array (RPIC-FPA) includes detectors and photonic integrated circuit coupled to the detectors that are configured to mix a return signal beam with local oscillator (LO) beams to produce a combined beam and direct the combined beam to the detectors. The LO beams have reconfigurable optical properties enabled by the RTIC-FPA. The LO beams are individually addressed to switch the detectors between a direct detection mode and various…
Transport of polarized laser-radiation using a hollow-core fiber
Granted: June 20, 2017
Patent Number:
9684125
Plane-polarized laser-radiation from a laser-source is converted to circularly polarized radiation by a quarter-wave plate. The circularly polarized radiation is input into a hollow-core fiber for transport to a point of use. The transported radiation is converted back to plane-polarized radiation by another quarter-wave plate between the fiber and the point of use.
Current driver for diode laser system
Granted: May 30, 2017
Patent Number:
9667031
An architecture for current driver circuitry for diode laser systems is contemplated whereby the circuitry is both modular and minimally complex with respect to the number of components and connections.
Multi-wavelength source of femtosecond infrared pulses
Granted: May 16, 2017
Patent Number:
9653867
A source of femtosecond pulses at center wavelengths of about 940 nm and about 1140 nanometers (nm) includes a mode-locked fiber MOPA delivering pulses having a center wavelength of about 1040 nm. The 1040-nanometer pulses are spectrally spread into a continuum spectrum extending in range between about 900 nm and about 1200 nm and having well defined side-lobes around the 940-nm and 1140-wavelengths. Radiation is spatially selected from these side-lobes and delivered as the 940-nm and…
Compact mounting for local oscillator laser launch
Granted: May 9, 2017
Patent Number:
9645349
A compact LIDAR pointing assembly can comprise a body, first and second ferrules, and a clip component that can be used to maintain an engagement between the first and second ferrules and an alignment of light emanating from the first and second ferrules relative to received light propagating along an optical axis of the assembly. The ferrules can be pivoted to adjust the orientation of the light emanating from the ferrules.
