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7620088 |
Surface emitting-semiconductor laser component featuring emission in a vertical direction
A surface-emitting semiconductor laser component, in particular an electrically pumped semiconductor laser component, featuring emission in a vertical direction. The component is provided for the...
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7583710 |
Laser and environmental monitoring system
A laser and monitoring system is provided. In another aspect of the present invention, the system includes a laser, pulse shaper and detection device. A further aspect of the present invention...
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7573920 |
Vertical external cavity surface emitting laser
Provided is a Vertical External Cavity Surface Emitting Laser (VECSEL). The VECSEL includes a semiconductor chip, a pump laser, a narrow bandwidth polarization filter, an external mirror, and a...
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7567596 |
Control system and apparatus for use with ultra-fast laser
A control system and apparatus for use with an ultra-fast laser is provided. In another aspect of the present invention, the apparatus includes a laser, pulse shaper, detection device and control...
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7541600 |
Lithographic and measurement techniques using the optical properties of biaxial crystals
A method and apparatus for accurately retrieving the position of an optical feature. The method uses the optical properties of biaxial crystals to conically refract the optical feature and...
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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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7505491 |
Frequency-converted high-power laser with recirculating polarization control
A frequency-tripled laser-resonator has three resonator-branches. The branches are optically connected with each other by one or more polarization-selective devices. Unpolarized fundamental...
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7477666 |
All fiber based short pulse amplification at one micron
A fiber laser cavity that includes a laser gain medium for receiving an optical input projection from a laser pump. The fiber laser cavity further includes a positive dispersion fiber segment and a...
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7477664 |
Nonlinear polarization pulse shaping mode locked fiber laser
A fiber laser cavity that includes a laser gain medium for receiving an optical input projection from a laser pump. The fiber laser cavity further includes a positive dispersion fiber segment and a...
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7477665 |
Electronically tuned self-starting polarization shaping mode locked fiber laser
A fiber laser cavity that includes a laser gain medium for receiving an optical input projection from a laser pump. The fiber laser cavity further includes a positive dispersion fiber segment and a...
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7457328 |
Polarization methods for diode laser excitation of solid state lasers
A mode-locked laser employs a coupled-polarization scheme for efficient longitudinal pumping by reshaped laser diode bars. One or more dielectric polarizers are configured to reflect a pumping...
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7450618 |
Laser system using ultrashort laser pulses
A laser system using ultrashort laser pulses is provided. In another aspect of the present invention, the system includes a laser, pulse shaper and detection device. A further aspect of the present...
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7436866 |
Combination optical isolator and pulse compressor
Optical systems configured for both changing the length of a laser pulse and operating as an optical isolator are disclosed. In some embodiments, optical isolation is achieve contemporaneously with...
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7379486 |
Technique for optically pumping alkali-metal atoms using CPT resonances
Systems and methods for optically pumping alkali-metal atoms using Coherence Population Trapping (CPT) resonances are disclosed. An illustrative push-pull optical pumping system for inducing CPT...
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7308171 |
Method and apparatus for optical isolation in high power fiber-optic systems
Methods and apparatus for optical isolation in high peak power fiber-optic systems prevent damage to a facet within a fiber-optic isolator caused by back-reflected light from, for example, an...
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7253871 |
Efficient room-temperature source of polarized single photons
An efficient technique for producing deterministically polarized single photons uses liquid-crystal hosts of either monomeric or oligomeric/polymeric form to preferentially align the single...
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7254150 |
Circular polarization spin semiconductor laser using magnetic semiconductor and laser beam generating method
Disclosed is a spin-based semiconductor laser source capable of generating a completely circularly polarized laser light by injecting current into p-type and n-type half-metal magnetic...
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7251258 |
Femtosecond ytterbium fiber laser with photonic crystal fiber for dispersion control
A photonic-crystal fiber provides dispersion compensation in a soliton fiber laser. The anomalous dispersion provided by the photonic-crystal fiber permits construction of a femtosecond fiber laser...
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7236504 |
Stretched-pulse Raman fiber lasers and methods of operating the same
A method of operating a stretched-pulse Raman fiber laser includes producing laser radiation gain in a laser cavity using predominantly Raman amplification. Such a stretched-pulse Raman fiber laser...
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7203211 |
Device and method for the optically exciting laser-active crystals with polarization-dependent absorption
A device for the optical excitation of laser-active crystals with a diode laser ( 1 ) is disclosed. The diode laser ( 1 ) generates pump radiation ( 2 ), and the laser-active crystal ( 14 ) is...
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7177330 |
Method and apparatus for controlling the polarization of an optical signal
A method of controlling the state of polarization of an optical signal includes injecting the optical signal into a laser diode and matching the wavelength of the optical signal to a longitudinal...
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7123634 |
Zig-zag laser amplifier with polarization controlled reflectors
A solid state zig-zag slab laser amplifier in which depolarization occurring at total internal reflection from opposed lateral faces of the amplifier slab is controlled by selecting a complex...
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7102120 |
Optical module with built-in wavelength locker
An optical module comprises a splitting element that splits light outputted from a light source; a first monitoring means that detects the intensity of light split by the splitting element; a...
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7095555 |
Multiple pass Faraday rotation amplifier
An apparatus for and a method of amplifying Faraday or Voigt rotation by passing light through a sample many times using multiple internal reflections and successive mirrored chambers that...
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7088743 |
Laser source comprising amplifier and adaptive wavefront/polarization driver
A hybrid laser source including a solid state laser driven by an array of fiber laser amplifiers, the inputs of which are controllable in phase and polarization, to compensate for distortions that...
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7039079 |
Pulsed CO2 laser including an optical damage resistant electro-optical switching arrangement
A laser includes a gain medium located in a laser resonator. The gain medium generates plane polarized radiation plane polarized in a first polarization orientation. An electro-optical switch is...
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7006537 |
Single polarization fiber laser
A method and apparatus for generating single polarization fiber laser output are disclosed. A Bragg grating is non-destructively fabricated within the fiber to introduce differential loss between...
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6993051 |
External cavity tunable laser with provisions for intracavity optical reflection suppression
An external cavity laser system includes an in-line optical filter and a reflection suppressor that efficiently suppresses back-reflected light while allowing light to resonate within the laser...
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6987786 |
Controlling laser polarization
A laser polarization control apparatus includes a polarization modifying device, such as a liquid crystal variable retarder, and a controller. The polarization modifying device receives a laser...
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6956878 |
Method and apparatus for reducing laser speckle using polarization averaging
A method and apparatus for reducing speckle uses polarization averaging. A polarizing beam splitter divides a first polarized laser output into a second polarized laser output and a third polarized...
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6917633 |
Frequency tunable optical oscillator with fiber grating mirrors
There is provided a millimeter wave band frequency optical oscillator predicted to be used as a millimeter wave oscillating frequency signal source in a base station of a millimeter wave wireless...
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6912239 |
Distributed feedback laser device
A distributed feedback laser device inhibiting beam coupling coefficient variation resulting from fabrication dispersion and improving fabrication yield. The distributed feedback laser device...
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6865006 |
Optical modulator module
“This invention offer optical modulator module with fulfilling the effective and the stable optical modulation, which stabilizes the emission of semiconductor and control the shift of optic axis...
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6850544 |
Optical resonators with orthogonally polarized modes
An optical resonator supporting two sets of simultaneously co-existent oscillation modes ( 30 and 31 ), having polarizations orthogonal to each other. Mode control elements ( 28 and 29 ), such...
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6842467 |
Fiber optic laser transmitter with reduced near end reflections
A laser apparatus, which generates laser light to be transmitted through an optical transmission system includes a laser that emits light that is substantially linearly polarized, a housing in...
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6829280 |
Device and a method for the generation of coherent x-ray radiation
A device ( 10 ) for producing high frequency radiation using a source of elliptically polarized radiation is disclosed based on: irradiating a frequency multiplication medium having a screw axis (...
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6816533 |
Laser oscillator
A laser oscillator comprises a laser medium, an optical excitation laser diode that irradiates the laser medium with light, a polarizer disposed on an optical path of the laser medium at a first...
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6807201 |
Laser with phase controlling region and method for driving the same
A laser includes a first region with a first moveguide having a first diffraction grating, a second region with a second waveguide having a second diffraction grating, and a phase controlling...
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6807198 |
Laser device
A Laser arrangement ( 1 ) comprising a pump unit ( 2 ) containing a pumped laser crystal ( 3 ), and means, such as a saturable absorber ( 15 ), for passive mode-locking, wherein two separate,...
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6804271 |
Light emission methods and light emission devices
Light emission methods and light emission devices are described including method and devices capable of emitting light at a plurality of controllable wavelengths. According to one aspect, a light...
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6760151 |
Depolarized semiconductor laser sources
A semiconductor pump laser uses a depolarzer to depolarize the pump light entering the fiber amplifier. The depolarized light source is useful for reducing polarization dependent gain of fiber...
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6754249 |
Laser resonator for generating polarized laser radiation
A method for generating polarized laser output radiation utilizes a laser resonator whose active medium exhibits thermally induced birefringence. The radiation fields oscillating in the laser...
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6751242 |
Surface emitting semiconductor laser and surface emitting semiconductor laser array
A surface emitting semiconductor laser capable of controlling the polarization direction of laser light and a surface emitting semiconductor laser array. In a surface emitting semiconductor laser,...
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6744801 |
Monolithic solid state laser assembly and method of manufacture
A one piece laser assembly including a rod of gain medium with one end-face bonded to a broad end-face on a stack of optical wafers that process light differently and mirrors plated on the...
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6741621 |
Laser irradiation apparatus and method of treating semiconductor thin film
A laser irradiation apparatus includes a laser light generation element, a splitting element for splitting laser light generated from the laser light generation element, a light interference...
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6728274 |
Multi-wavelength laser apparatus and method
A fiber-optic laser source capable of emitting multiple useful wavelengths at the same time, including multiple ITU grid wavelengths, is disclosed. The laser preferably comprises a diode-pumped...
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6724787 |
Low noise solid state laser
A low noise laser includes a birefringent gain crystal arranged so that polarization is not constant within the gain crystal. The gain crystal and an intracavity optical element each have a nonzero...
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6714568 |
Active optical system for beam-steering a laser beam
The present invention is an active optical system for beam-steering an incoming laser beam. It includes a first control optics assembly for receiving an incoming laser beam and adjusting that...
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6711185 |
Polarization dependent out-coupling
An optical arrangement for direction dependent coupling out of light comprises a first and a second polarization converter each for converting the state of polarization of light received in a...
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6697395 |
Sum frequency light generation method and sum frequency light generation apparatus adapatble for wide-band wavelength conversion
A nonlinear optical crystal allowing type 2 phase matching multiplexes a fixed wavelength light having an angular frequency ω D and a variable wavelength light having an angular frequency ω S ,...
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