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7620077 |
Apparatus and method for pumping and operating optical parametric oscillators using DFB fiber lasers
An optical parametric oscillator (OPO) is described that efficiently converts a near-infrared laser beam to tunable mid-infrared wavelength output. In some embodiments, the OPO includes an optical...
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7616668 |
Fiber laser system using fiber having dysprosium
Provided is a fiber laser system including fiber containing dysprosium. The fiber laser system uses 1.7-μm pump light. A resonator of the fiber laser system includes a dichroic mirror, a partial...
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7616667 |
Broadband fiber laser
A broadband fiber laser provides a lasing cavity including a reflective mirror and at least one fiber Bragg grating for further providing a lasing signal to resonate and be amplified therein....
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7606273 |
Wavelength and intensity stabilized laser diode and application of same to pumping solid-state lasers
An efficient and low-noise solid-state laser is optically pumped by one or more laser diode(s) driven by RF modulated current. The solid-state laser operation is stabilized by the pump source...
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7605973 |
Optical wavelength conversion light source
An allowable temperature range satisfying phase matching conditions of a wavelength conversion device is widened. A wavelength conversion light source includes a semiconductor laser diode device (...
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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...
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7602822 |
Fiber laser based production of laser drilled microvias for multi-layer drilling, dicing, trimming of milling applications
Fiber lasers and methods for constructing and using fiber lasers for micro-/nano-machining with output beams including stacked pulses and combinations of continuous wave, pseudo-continuous wave and...
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7602821 |
Device for generating laser radiation in the infrared
The invention is in the field of laser radiation generation in bands II and III, and relates to a device for generating laser radiation in the infrared having means for modifying the...
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7602546 |
Laser oscillator
To extend the temperature range for a stable operation without mode hopping and obtain a stable laser oscillation, a laser oscillator is provided. The laser oscillator includes: an optical...
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7599406 |
Fiber ring laser
A fiber ring laser is provided, which includes an optic amplifier, a first optical coupler (OCP), a second OCP, a first fiber ring, a second fiber ring, a first polarization controller (PC), and a...
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7599405 |
Method and apparatus for coherently combining multiple laser oscillators
A laser apparatus having multiple laser devices coupled together. The laser devices comprise optical fibers with laser active regions. Each of the fibers has a reflector disposed at one end and is...
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7599404 |
Composite optic fibre for laser with pump and laser wave confinement, applications to lasers
A composite optic fibre for laser includes a core surrounded with a pump guiding sheath in contact with the core, sheath being a photonic structure formed by a substantially regular matrix assembly...
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7593435 |
Powerful fiber laser system
A powerful fiber laser system is configured with at least one large-area multi-clad rare-earth doped fiber, which is configured with a MM core capable of propagating a single mode laser emission at...
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7593434 |
Compression design for high energy short pulse fiber laser
A fiber Chirped Pulse Amplification (CPA) laser system includes a fiber mode-locking oscillator for generating a laser for projecting to a fiber stretcher for stretching a pulse width of the laser....
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7590155 |
Hybrid high power laser to achieve high repetition rate and high pulse energy
A fiber laser cavity that provides a new pulse shaping and spectral shaping technique is disclosed in this invention to achieve the purpose of resolving the difficulties arising from the issues...
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7583431 |
Wavelength conversion optical device, laser light source, and image display optical device
A wavelength conversion optical device is provided with a fundamental wave light source ( 301 ) which outputs a fundamental wave (L 11 ) including a P polarized light and an S polarized light that...
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7580441 |
Athermal external cavity laser
Provided is an athermal external cavity laser (ECL), whose output optical power and output wavelength can be kept regular irrespective of temperature changes without using additional temperature...
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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...
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7580431 |
Method and apparatus for high power amplification in multimode fibers
An apparatus and method for high power amplification in a multimode fiber amplifier. The apparatus includes a diffraction limited low power laser, a multimode fiber amplifier, and a lens. The...
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7577178 |
Narrow linewidth injection seeded Q-switched fiber ring laser based on a low-SBS fiber
A narrow linewidth injection-seeded Q-switched fiber ring laser based on a low-SBS optical fiber. High peak powers are achieved through the use of a single-clad erbium doped fiber with an acoustic...
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7576909 |
Multimode amplifier for amplifying single mode light
The invention describes techniques for the control of the spatial as well as spectral beam quality of multi-mode fiber amplification of high peak power pulses as well as using such a configuration...
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7576908 |
Fiber device, wavelength converter and image forming apparatus
The present invention concerns a fiber device capable of shifting an oscillation wavelength of a fundamental wave of a laser emitted therefrom, and is provided with a laser cavity including a fiber...
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7567593 |
System and method for fractional Raman order pumping in optical communication systems
An optical communication system includes a gain medium that is capable of receiving at least one optical signal that includes one or more optical signal wavelengths. The system also includes one or...
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7561605 |
Extreme chirped/stretched pulsed amplification and laser
Methods, devices and systems for generating ultrashort optical linear chirped pulses with very high power by amplifying the pulses so that their temporal duration is longer than the storage time of...
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7558298 |
Laser device triggered by a photonic fiber
A device producing laser pulses of durations smaller than 30 ns, and including along its internal optical axis: a laser resonator of optical length smaller than 2 m including two reflecting ends...
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7555022 |
Reduction of pulse width by spectral broadening in amplification stage and after amplification stage
This invention discloses a fiber Chirped Pulse Amplification (CPA) laser system. The system includes a fiber mode-locking oscillator for generating a seed laser. The laser system further includes a...
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7545836 |
Apparatus and method for temporally shaping drive current to seed-signal-laser-diodes for high-powered fiber-laser amplifier systems
Apparatus and method for generating controlled-linewidth laser-seed-signals for high-powered fiber-laser amplifier systems. In some embodiments, the natural chirp (frequency change of laser light...
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7542491 |
Wavelength converter and two-dimensional image display device
The present invention aims to provide a wavelength converter capable of stably obtaining a W-class high-output green laser beam and a 2D image display device using this wavelength converter. By...
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7542488 |
Fiber laser
An optical fiber for producing laser radiation at a characteristic wavelength includes a first multimode core region and an active region embedded within the core region for producing radiation at...
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7537395 |
Diode-laser-pump module with integrated signal ports for pumping amplifying fibers and method
Apparatus and method for collimating pump light of a first wavelength from laser diode(s) into a collimated beam within an enclosure having first and second optical ports, directing pump light from...
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7535947 |
Enhanced beam quality from a laser rod using interstitial dopants
A laser rod is provided having a tailored gain profile such that the quality of the output beam is enhanced. The laser rod has a concentration of dopant ions having a first valence that is...
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7535934 |
Optical continuum source including light generation beyond wavelength edges of continuum
An optical continuum source is formed that is used to generate both a continuum and one or more light peaks outside the bandwidth of the continuum. In particular, one or more fiber Bragg gratings...
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7535631 |
Method and apparatus for spectral-beam combining of fiber-amplified laser beams using high-efficiency dielectric diffractive gratings
Apparatus and method for spectral-beam combining light from a plurality of high-power fiber lasers that, in some embodiments, use two substantially identical diffraction gratings in a parallel,...
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7532391 |
Optical amplification module and laser light source designed to suppress photodarkening
The present invention relates to an optical amplification module having a construction which effectively suppresses photodarkening, and to a laser light source including the same. The laser light...
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7529278 |
Nonlinear polarization pulse shaping model locked fiber laser at one micron with photonic crystal (PC), photonic bandgap (PBG), or higher order mode (HOM) fiber
A fiber laser cavity that includes a laser gain medium for receiving an optical input projection from a laser pump, wherein the laser cavity further includes a normal dispersion fiber segment with...
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7526165 |
Optical coupler devices, methods of their production and use
The present invention relates in general to coupling of light from one or more input waveguides to an output waveguide or output section of a waveguide having other physical dimensions and/or...
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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...
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7508848 |
Method and configurations in achieving high energy operation for photonic band gap (PGB) fiber with end caps
A fiber Chirped Pulse Amplification (CPA) laser system includes a photonics band gap (PBG) fiber to function as a compressor. The PBG fiber is spliced with a fiber end cap that has an core expander...
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7508574 |
Apparatus for providing optical radiation
Apparatus for providing optical radiation ( 10 ) comprising a pump array ( 8 ) for providing pump radiation ( 7 ), a first pump combiner ( 1 ), and a waveguide ( 3 ), wherein the pump radiation ( 7...
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7505196 |
Method and apparatus for controlling and protecting pulsed high power fiber amplifier systems
An electronic circuit for controlling a laser system consisting of a pulse source and high power fiber amplifier is disclosed. The circuit is used to control the gain of the high power fiber...
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7502391 |
Eye safe high power fibre laser
Apparatus for providing optical radiation includes a pump source and at least one first amplifying waveguide. The first amplifying waveguide emits optical radiation in excess of 1400 nm when pumped...
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7496117 |
Laser arrangement and a method for generating power pulses
A laser arrangement including a gain fiber to provide nonlinear amplification, the gain fiber having a first end and a second end, a dispersion adaptation fiber having a first end and a second end,...
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7492804 |
Near-field light emitting device and data recording/reproduction apparatus
A near-field light emitting device includes a deflecting unit that deflects electromagnetic waves propagated through a core toward a base. A propagating unit arranged on the base emits near-field...
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7489711 |
Laser beam processing apparatus
This laser beam processing apparatus includes a fiber laser oscillator, a laser beam branching unit, a laser beam injecting unit, a fiber transmission system, a laser beam irradiating unit, and a...
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7489439 |
Semiconductor Raman ring amplifier
A semiconductor-based Raman ring amplifier is disclosed. A method according to aspects of the present invention includes directing a pump optical beam having a pump wavelength and an input pump...
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7486705 |
Femtosecond laser processing system with process parameters, controls and feedback
A femtosecond laser based laser processing system having a femtosecond laser, frequency conversion optics, beam manipulation optics, target motion control, processing chamber, diagnostic systems...
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7483614 |
Optical fiber and optical device using the same
There is disclosed an optical fiber wherein an absolute value of the fourth order dispersion β 4 of fourth derivative β 4 of propagation constant β with respect to angular frequency ω at a...
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7483611 |
Transmission fibre with optical amplification and method for producing same
A transmission fibre with optical amplification, comprising a core and a cladding. The core material is doped with a first dopant of a material having a higher index of refraction than the material...
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7477672 |
Mitigation of photodarkening to achieve laser oscillation and amplification with highly doped fibers
Photodarkening in active fiber or waveguide devices (e.g. lasers, amplifiers, and incoherent sources such as ASE sources) can be reduced by altering the dopant concentration along the length of the...
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7477667 |
Practical approach for one mJ femtosecond fiber laser
A fiber Chirped Pulse Amplification (CPA) laser system includes a fiber mode-locking oscillator for generating a laser and stretching into a few hundreds ps-10 ns pulse by a fiber stretcher for...
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