| Patent Number |
Title Of Patent |
Date Issued |
| 7453913 |
Resonant Fabry-Perot semiconductor saturable absorbers and two photon absorption power limiters |
November 18, 2008 |
| An intracavity resonant Fabry-Perot saturable absorber (R-FPSA) induces modelocking in a laser such as a fiber laser. An optical limiter such as a two photon absorber (TPA) can be used in conjunction with the R-FPSA, so that Q-switching is inhibited, resulting in laser output that is cw |
| 7450813 |
Rare earth doped and large effective area optical fibers for fiber lasers and amplifiers |
November 11, 2008 |
| Various embodiments described herein include rare earth doped glass compositions that may be used in optical fiber and rods having large core sizes. Such optical fibers and rods may be employed in fiber lasers and amplifiers. The index of refraction of the glass may be substantially |
| 7440162 |
High power fiber chirped pulse amplification system utilizing telecom-type components |
October 21, 2008 |
| A chirped pulse amplifier (CPA) system having a mode-locked laser and a high-speed pulse selector, wherein the pulse selector modulates output pulses based upon an applied modulation voltage. A pulse selector may be an integrated electro-optic modulator, for example a LiNbO.sub.3 mod |
| 7418836 |
Photonic bandgap fibers |
September 2, 2008 |
| Included among the many structures described herein are photonic bandgap fibers designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber designs, smaller d |
| 7414780 |
All-fiber chirped pulse amplification systems |
August 19, 2008 |
| By compensating polarization mode-dispersion as well chromatic dispersion in photonic crystal fiber pulse compressors, high pulse energies can be obtained from all-fiber chirped pulse amplification systems. By inducing third-order dispersion in fiber amplifiers via self-phase modulation, |
| 7394591 |
Utilization of Yb: and Nd: mode-locked oscillators in solid-state short pulse laser systems |
July 1, 2008 |
| An optimized Yb: doped fiber mode-locked oscillator and fiber amplifier system for seeding Nd: or Yb: doped regenerative amplifiers. The pulses are generated in the Yb: or Nd: doped fiber mode-locked oscillator, and may undergo spectral narrowing or broadening, wavelength converting, |
| 7330301 |
Inexpensive variable rep-rate source for high-energy, ultrafast lasers |
February 12, 2008 |
| System for converting relatively long pulses from rep-rate variable ultrafast optical sources to shorter, high-energy pulses suitable for sources in high-energy ultrafast lasers. Fibers with positive group velocity dispersion (GVD) and self phase modulation are advantageously employe |
| 7327920 |
Optical fiber pump multiplexer |
February 5, 2008 |
| One or more single mode few-moded or multimode fibers are incorporated into a bundle to carry input to a fiber amplifier or output from a fiber amplifier or a fiber laser. The input is at the signal wavelength, which is the wavelength where amplification or lasing occurs. Each of the |
| 7280730 |
Large core holey fibers |
October 9, 2007 |
| Various types of holey fiber provide optical propagation. In various embodiments, for example, a large core holey fiber comprises a cladding region formed by large holes arranged in few layers. The number of layers or rows of holes about the large core can be used to coarse tune the |
| 7257302 |
In-line, high energy fiber chirped pulse amplification system |
August 14, 2007 |
| By writing non-linear chirp into fiber Bragg gratings, greater control over dispersion compensation in CPA systems is obtained, such that, for example, the dispersion profile of the fiber Bragg grating and a bulk compressor may be matched. An iterative method of writing the fiber gra |
| 7209619 |
Photonic bandgap fibers |
April 24, 2007 |
| Included among the many structures described herein are photonic bandgap fibers designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber designs, smaller d |
| 7190705 |
Pulsed laser sources |
March 13, 2007 |
| Various embodiments include modelocked fiber laser resonators that may be coupled with optical amplifiers. An isolator may separate the laser resonator from the amplifier, although certain embodiments exclude such an isolator. A reflective optical element on one end of the resonator |
| 7146083 |
Etched plate alignment method and apparatus |
December 5, 2006 |
| An alignment apparatus for optical components includes chemically co-etched parts which may be assembled with high tolerances and in a repeatable manner. The resulting construction, together with a translatable stage and/or a micrometer, allows for rapid and extremely precise alignme |
| 7131968 |
Apparatus and method for opthalmologic surgical procedures using a femtosecond fiber laser |
November 7, 2006 |
| Apparatus and method to generate a stream of pulses having a pulse repetition rate of at least about 50000 pulses per second and a per-pulse length of less than one picosecond, and to scan and focus the stream to an output light pattern suitable to sculpt tissue for a surgical proced |
| 7113327 |
High power fiber chirped pulse amplification system utilizing telecom-type components |
September 26, 2006 |
| An erbium fiber (or erbium-ytterbium) based chirped pulse amplification system is illustrated. The use of fiber amplifiers operating in the telecommunications window enables the implementation of telecommunications components and telecommunications compatible assembly procedures with |
| 7088756 |
Polarization maintaining dispersion controlled fiber laser source of ultrashort pulses |
August 8, 2006 |
| A modelocked linear fiber laser cavity with enhanced pulse-width control includes concatenated sections of both polarization-maintaining and non-polarization-maintaining fibers. Apodized fiber Bragg gratings and integrated fiber polarizers are included in the cavity to assist in line |
| 7016573 |
Optical fiber pump multiplexer |
March 21, 2006 |
| One or more single mode few-moded or multimode fibers are incorporated into a bundle to carry input to a fiber amplifier or output from a fiber amplifier or a fiber laser. The input is at the signal wavelength, which is the wavelength where amplification or lasing occurs. Each of the |
| 6956887 |
Resonant fabry-perot semiconductor saturable absorbers and two photon absorption power limiters |
October 18, 2005 |
| An intracavity resonant Fabry-Perot saturable absorber (R-FPSA) induces modelocking in a laser such as a fiber laser. An optical limiter such as a two photon absorber (TPA) can be used in conjunction with the R-FPSA, so that Q-switching is inhibited, resulting in laser output that is cw |
| 6954575 |
Single-polarization high power fiber lasers and amplifiers |
October 11, 2005 |
| A novel polarization maintaining optical fiber, which can be used as a high-power polarization maintaining fiber laser or amplifier, is described. Insensitivity of the polarization state to external fiber bending and temperature changes is accomplished by minimizing polarization mode |
| 6885683 |
Modular, high energy, widely-tunable ultrafast fiber source |
April 26, 2005 |
| A modular, compact and widely tunable laser system for the efficient generation of high peak and high average power ultrashort pulses. Modularity is ensured by the implementation of interchangeable amplifier components. System compactness is ensured by employing efficient fiber ampli |
| 6819694 |
Resonant fabry-perot semiconductor saturable absorbers and two photon absorption power limiters |
November 16, 2004 |
| An intracavity resonant Fabry-Perot saturable absorber (R-FPSA) induces modelocking in a laser such as a fiber laser. An optical limiter such as a two photon absorber (TPA) can be used in conjunction with the R-FPSA, so that Q-switching is inhibited, resulting in laser output that is cw |
| 6744555 |
Ultrashort-pulse source with controllable wavelength output |
June 1, 2004 |
| A multiple-wavelength ultrashort-pulse laser system includes a laser generator producing ultrashort pulses at a fixed wavelength, and at least one and preferably a plurality of wavelength-conversion channels. Preferably, a fiber laser system is used for generating single-wavelength, |
| 6723991 |
Single-shot differential spectroscopy and spectral-imaging at submillimeter wavelengths |
April 20, 2004 |
| An invention is described, which uses terahertz radiation for chemical sensing and gas analysis. Relatively narrow-band THz radiation is generated by impinging an optical pulse train from a short-pulse laser source on a THz emitter. Coherent detection of the resulting THz radiation i |
| 6642477 |
Method for laser drilling a counter-tapered through-hole in a material |
November 4, 2003 |
| A method of forming a through-hole which is counter-tapered relative to a drilling laser involves directing, along an incidence axis and onto an impingement location on a first surface of a material, a laser beam of sufficient energy to ablate the material, the incidence axis being offse |
| 6549547 |
Ultrashort-pulse source with controllable multiple-wavelength output |
April 15, 2003 |
| A multiple-wavelength ultrashort-pulse laser system includes a laser generator producing ultrashort pulses at a fixed wavelength, and at least one and preferably a plurality of wavelength-conversion channels. Preferably, a fiber laser system is used for generating single-wavelength, |
| 6334011 |
Ultrashort-pulse source with controllable multiple-wavelength output |
December 25, 2001 |
| A multiple-wavelength ultrashort-pulse laser system includes a laser generator producing ultrashort pulses at a fixed wavelength, and at least one and preferably a plurality of wavelength-conversion channels. Preferably, a fiber laser system is used for generating single-wavelength, |
| 6316142 |
Electrode containing a polymeric binder material, method of formation thereof and electrochemica |
November 13, 2001 |
| Provided are methods of forming an electrode suitable for use in an electrochemical cell, and novel electrodes which can be formed therefrom. The methods involve the steps of: (a) forming an electrode slurry from components comprising a solvent, a polymeric binder material and a solid |
| 6275512 |
Mode-locked multimode fiber laser pulse source |
August 14, 2001 |
| A laser utilizes a cavity design which allows the stable generation of high peak power pulses from mode-locked multi-mode fiber lasers, greatly extending the peak power limits of conventional mode-locked single-mode fiber lasers. Mode-locking may be induced by insertion of a saturable |
| 6252892 |
Resonant fabry-perot semiconductor saturable absorbers and two photon absorption power limiters |
June 26, 2001 |
| An intracavity resonant Fabry-Perot saturable absorber (R-FPSA) induces modelocking in a laser such as a fiber laser. An optical limiter such as a two photon absorber (TPA) can be used in conjunction with the R-FPSA, so that Q-switching is inhibited, resulting in laser output that is cw |
| 6249630 |
Apparatus and method for delivery of dispersion-compensated ultrashort optical pulses with high |
June 19, 2001 |
| An apparatus and method for delivery of high peak power pulse through an optical fiber to an optical device includes an ultrashort pulsed laser source which produces ultrashort optical pulses having high peak power. Prior to transmitting the optical pulses through a delivery optical fibe |
| 6208458 |
Quasi-phase-matched parametric chirped pulse amplification systems |
March 27, 2001 |
| Use of quasi-phase-matched (QPM) materials for parametric chirped pulse amplification (PCPA) substantially reduces the required pump peak power and pump brightness, allowing exploitation of spatially-multimode and long duration pump pulses. It also removes restrictions on pump wavelength |
| 6198568 |
Use of Chirped Quasi-phase-matched materials in chirped pulse amplification systems |
March 6, 2001 |
| The limitations on maximum pulse energies from a fiber-grating pulse compressor are circumvented by placing a chirped-period quasi-phase-matched (QPM) crystal after the fiber-grating pulse compressor. The crystal accomplishes second-harmonic generation and stretched-pulse compression |
| 6181463 |
Quasi-phase-matched parametric chirped pulse amplification systems |
January 30, 2001 |
| Use of quasi-phase-matched (QPM) materials for parametric chirped pulse amplification (PCPA) substantially reduces the required pump peak power and pump brightness, allowing exploitation of spatially-multimode and long duration pump pulses. It also removes restrictions on pump wavelength |
| 6154310 |
Ultrashort-pulse source with controllable multiple-wavelength output |
November 28, 2000 |
| A multiple-wavelength ultrashort-pulse laser system includes a laser generator producing ultrashort pulses at a fixed wavelength, and at least one and preferably a plurality of wavelength-conversion channels. Preferably, a fiber laser system is used for generating single-wavelength, |
| 6148503 |
Process of manufacturing porous separator for electrochemical power supply |
November 21, 2000 |
| A method of forming a porous composite separator layer for an electrochemical cell comprising the steps of printing a thin layer of a separator precursor solution on the surface of one of the electrochemical cell electrodes, curing the thin layer of separator precursor solution so th |
| 6075331 |
Systems and methods for managing energy of electric power supply systems |
June 13, 2000 |
| An energy management system for optimizing low power and short term high power states of a power supply system. A significant feature of the present invention relates to a design of a power supply apparatus based on internal resistances of the power supply components. In an exemplary |
| 6034975 |
High power, passively modelocked fiber laser, and method of construction |
March 7, 2000 |
| The output power of a passively modelocked fiber laser is increased by distributing optical losses throughout the cavity. The laser cavity includes a saturable absorber and a polarizing element that serves as the output coupler, and these are positioned on opposite sides of the fiber |
| 6020591 |
Two-photon microscopy with plane wave illumination |
February 1, 2000 |
| A two-photon fluorescence microscope employs two laser beams having pulses of respective wavelengths .lambda..sub.2 and .lambda..sub.3, which cause two-photon emission of a fluorophore when the pulses are spatially and temporally overlapping. The pulses of the two beams of wavelengths |
| 6014249 |
Apparatus and method for the generation of high-power femtosecond pulses from a fiber amplifier |
January 11, 2000 |
| An apparatus generates femtosecond pulses from laser amplifiers by nonlinear frequency conversion. The implementation of nonlinear frequency-conversion allows the design of highly nonlinear amplifiers at a signal wavelength (SW), while still preserving a high-quality pulse at an appr |
| 5948464 |
Process of manufacturing porous separator for electrochemical power supply |
September 7, 1999 |
| A method of forming a porous composite separator layer for an electrochemical cell comprising the steps of printing a thin layer of a separator precursor solution on the surface of one of the electrochemical cell electrodes, drying and curing the thin layer of separator precursor sol |
| 5923686 |
Environmentally stable passively modelocked fiber laser pulse source |
July 13, 1999 |
| The present invention is directed to providing an environmentally stable, ultra-short pulse source. Exemplary embodiments relate to passively modelocked ultra-short fiber lasers which are insensitive to temperature variations and which possess only negligible sensitivity to pressure |
| 5920668 |
Compact fiber laser unit |
July 6, 1999 |
| A compact fiber laser unit includes a laser source, a laser oscillator connected to the laser source for generating an optical and a laser amplifier connected to the laser oscillator for amplifying the optical pulse produced by the laser oscillator. The laser oscillator includes a fi |
| 5898485 |
Method and apparatus for multiple target ranging |
April 27, 1999 |
| The present invention is directed to a method and apparatus for detecting reflected pulses from multiple targets in a field of view such that range to each target can be detected with high resolution, even when the targets are located over a relatively wide measurement range. Exemplary |
| 5880877 |
Apparatus and method for the generation of high-power femtosecond pulses from a fiber amplifier |
March 9, 1999 |
| An apparatus generates femtosecond pulses from laser amplifiers by nonlinear frequency conversion. The implementation of nonlinear frequency-conversion allows the design of highly nonlinear amplifiers at a signal wavelength (SW), while still preserving a high-quality pulse at an appr |
| 5875408 |
Automated vehicle guidance system and method for automatically guiding a vehicle |
February 23, 1999 |
| An automated vehicle guidance system for guiding a movable vehicle along a predetermined desired path over a surface that is provided with at least one reference marking includes a laser radar for emitting laser pulses towards the reference marking and for receiving laser pulses reflecte |
| 5867304 |
Use of aperiodic quasi-phase-matched gratings in ultrashort pulse sources |
February 2, 1999 |
| A chirped pulse amplification system employs chirped quasi-phase-matched (QPM) gratings as dispersive delay lines for stretching and/or compressing ultrashort pulses. QPM gratings with periods varying along the beam propagation direction produce simultaneous second-harmonic generation an |
| 5865860 |
Process for filling electrochemical cells with electrolyte |
February 2, 1999 |
| A process for manufacturing an electrochemical cell comprising the steps of providing an electrode and applying electrolyte to the electrode using an ink-jet printer. In the preferred embodiment of the present invention, an ink-jet printing process is utilized to print the electrolyte on |
| 5862287 |
Apparatus and method for delivery of dispersion compensated ultrashort optical pulses with high |
January 19, 1999 |
| An apparatus and method for delivery of high peak power pulse through an optical fiber to an optical device included an ultrashort pulsed laser source which produce ultrashort optical pluses having high peak power. Prior to transmittng the optical pulses through a delivery optical fiber, |
| 5855697 |
Magnesium alloy having superior elevated-temperature properties and die castability |
January 5, 1999 |
| A magnesium based alloy exhibiting superior elevated-temperature properties such as creep resistance and tensile strength and die castability such as reduced hot-cracking and die-sticking, contains about 2 to 9 wt. % aluminum, 6 to 12 wt. % zinc, 0.1 to 2.0 wt. % calcium, optionally 0.2 |
| 5847863 |
Hybrid short-pulse amplifiers with phase-mismatch compensated pulse stretchers and compressors |
December 8, 1998 |
| Disclosed is a system for amplification of ultrashort optical pulses. The disclosed system has reduced size and increased robustness, reliability and cost-effectiveness. The disclosed invention is particularly effective in chirped pulse amplification (CPA) systems wherein pulses are stre |
