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8948222 Laser diode light source  
A light source including a laser diode, and a method of operating a light source including a laser diode are disclosed. A driving current of the laser diode is dithered to cause a near-field light...
8937978 Semiconductor laser  
A semiconductor laser has an optical cavity comprising and active layer disposed between an n-side barrier layer and a p-side barrier layer. The active layer comprises alternating layers of a...
8937977 Laser antireflection device and laser apparatus comprising same  
A laser anti-reflection device includes a polarizing beam splitter, a λ/4 wave plate and an absorber disposed in an outgoing light path of a laser emitting linearly polarized light with a...
8923351 Device for producing high frequencies by means of light frequency beating  
In the field of the production of very high frequencies, for example from 1 gigahertz to several terahertz, by beating the frequencies of two laser beams together, a device includes a resonant...
8902940 Light source control method  
The present invention relates to a light source control method capable of decreasing the dependence of a pulse width (FWHM) of an output pulsed light on a repetition frequency. A pulsed light...
8885679 Mode-hop free athermal laser  
Embodiments of the invention describe integrating a phase shifting component into a cavity of a laser. Said phase shifter is capable of a continuous phase shift at a single wavelength over a large...
8842704 Multiple phase-locked loops for high-power RF-power combiners  
An RF power-supply for driving a carbon dioxide CO2 gas-discharge laser includes a plurality of power-oscillators phase-locked to a common reference oscillator. Outputs of the phase-locked...
8811436 Laser apparatus, extreme ultraviolet light generation system including the laser apparatus, and method for controlling the laser apparatus  
A laser apparatus may include a master oscillator configured to output a laser beam, at least one amplifier disposed in a beam path of the laser beam from the master oscillator, at least one power...
8767783 Light source device, lighting device and image display device  
A light source device is provided with a coherent light source for emitting the coherent light, and a pattern changer for changing an interference pattern of the coherent light on a surface of the...
8743920 Wavelength variable light source system  
There is provided a wavelength variable light source system capable of changing wavelength and intensity of output signal light and of improving preset accuracy and stability of the wavelength and...
8718103 Apparatus for adjusting polarization characteristics, and ultra-short ultra-high intensity pulse laser generator comprising same  
The present invention relates to an apparatus for generating an ultra-short ultra-high intensity pulse laser, comprising: a pulse laser providing unit which generates an ultra-short ultra-high...
8693509 Loss modulated silicon evanescent lasers  
Loss modulated silicon evanescent lasers are disclosed. A loss-modulated semiconductor laser device in accordance with one or more embodiments of the present invention comprises a...
8571823 Method for controlling the quality of industrial processes, in particular laser-welding processes  
A system and a method for controlling the quality of an industrial process, of the type that comprises the steps of: providing one or more reference signals for the industrial process; acquiring...
8548336 Closed loop optical modulation amplitude control  
Systems and methods are provided for an optical modulation feedback circuit. The feedback circuit includes a low frequency comparison circuit configured to receive a monitoring signal generated by...
8520709 Method and apparatus for reducing the amplitude modulation of optical signals in external cavity lasers  
A laser apparatus includes an external cavity laser (ECL) where the optical signal is modulated by an electrical modulation signal for modulating in frequency the laser output signal. The...
8520306 Apparatus for combining laser radiation  
Apparatus for combining laser radiation (1) 5 which apparatus comprises a seed laser (2), a splitter (3), a plurality of amplifier chains (4), a reference amplifier chain (7), detection means (5)....
8442090 Efficient burst mode optical parametric source  
A method and apparatus recycle residual energy in an optical parametric burst source.
8401046 Multibeam coherent laser diode source (embodiments)  
A multibeam coherent laser diode source comprises a master laser, a linear amplifier and two perpendicular amplifiers. The master laser and amplifiers are in the form of a single heterostructure...
8320775 Method and device for bias control of a laser MZ modulator  
The present invention discloses a method and device for the bias control of an MZ modulator. The method comprises: during startup of an MZ modulator, inputting a linearly changing bias control...
8295321 Laser light source  
A laser light source 1 is provided with a first reflection mirror 11, a laser medium 12, an aperture 13, an output mirror 14, a half mirror 15, a light beam diameter adjuster 16, and a second...
8259764 Bandwidth control device  
A method and apparatus is disclosed for operating a laser output light beam pulse line narrowing mechanism that may comprise a nominal center wavelength and bandwidth selection optic; a static...
8254419 Apparatus and method to suppress gain-switched spikes in 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...
8238390 Methods for stabilizing the output of a pulsed laser system having pulse shaping capabilities  
Methods stabilize the output of a pulsed laser system using pulse shaping capabilities. In some embodiments, transient effects following a transition between a QCW regime and a pulse shaping...
8189631 External resonator-type wavelength tunable laser device  
The present invention provides an external resonator-type wavelength tunable laser device that can properly fulfill a wavelength tuning function even with the use of a planar wavelength tunable...
8135050 Automated polarization correction  
A chirped pulse amplification system includes one or more polarization compensator configured to compensate for polarization altering elements with the chirped pulse amplification system. The...
8009708 Optical amplification module and laser light source apparatus  
The present invention relates to an optical amplifier module, or the like, having a structure for enabling effective suppression of photodarkening and efficient optical amplification. The optical...
7991027 Apparatus and method for generating optical-seed pulses 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...
7970030 Dual pulse-width medical laser with presets  
A medical laser device is described that generates a laser beam controllable with presets as to pulse duration, pulse repetition rate, power and energy per pulse. The device also provides presets...
7970026 Multiple output repetitively pulsed laser  
A continuously pumped, mode-locked laser is disclosed, which includes a cavity dumper that can remove a constant fraction of the light from the cavity at every 1/f period of time, independent of...
7961763 System for detection of wafer defects  
Fast on-line electro-optical detection of wafer defects by illuminating with a short light pulse from a repetitively pulsed laser, a section of the wafer while it is moved across the field of view...
7957440 Dual pulse-width medical laser  
A laser device that includes a dual pulse-width laser-pumping circuit generates long and short laser pulses. The laser-pumping circuit employs a single power supply with dual high voltage outputs...
7920611 Laser apparatus, laser irradiation method, and manufacturing method of semiconductor device  
It is an object to provide a laser apparatus, a laser irradiating method and a manufacturing method of a semiconductor device that make laser energy more stable. To attain the object, a part of...
7839906 Laser power control in an optical disc drive  
Exemplary embodiments provide a method and system for controlling laser power in an optical disc drive. The exemplary embodiment of a control system includes at least one control component for...
7826502 Circuit and method for lessening noise in a laser system having a frequency converting element  
A method and circuit is disclosed for a laser system wherein the power of the laser signal is kept at a constant near optimum value and a portion of an frequency doubled output signal is monitored...
7809034 Auto-power control circuit to maintain extinction ratio of optical output from laser diode  
The present invention provides an auto-power control (APC) circuit and a method to stabilize the extinction ratio of an optical output from a laser diode (LD) in an optical transmitter. The APC...
7804864 High power short pulse fiber laser  
A pulsed laser comprises an oscillator and amplifier. An attenuator and/or pre-compressor may be disposed between the oscillator and amplifier to improve performance and possibly the quality of...
7767947 Semiconductor light source with optical feedback  
A semiconductor light source with optical feedback includes a vertical member extending upward from an upper horizontal surface of a header parallel to a vertical beam projected from a...
7733929 Wavelength tunable optical transmitter and optical transceiver  
A wavelength tunable laser module for DWDM is used, in which a single electroabsorption modulator integrated laser is mounted and an oscillation wavelength is made tunable by temperature control....
7680158 LPP type extreme ultra violet light source apparatus and driver laser for the same  
A driver laser for EUV light source apparatus which driver laser simultaneously achieves short-pulsing and multi-line oscillation. The driver laser includes: a short-pulse multi-line oscillated...
7672345 Semiconductor laser drive control apparatus  
A drive signal for driving a semiconductor laser is generated on the basis of an image signal inputted in synchronism with a pixel clock. A bias signal to the semiconductor laser is generated at a...
7639910 Optical module and method of packaging the same  
An optical module is configured with a combination of a single-mode oscillating light source and an optical filter. In this optical module, the single-mode oscillating light source outputs a...
7564881 Optical transmission module with digital adjustment and the adjusting method  
The invention discloses an optical transmission module with digital adjustment and method thereof. The module includes a laser (21), a laser driver (22), an automatic power adjustment circuit...
7558484 Ultra-wide band wireless system  
The present invention provides a kind of ultra-wide band wireless system, which changes the previous electronic structure for ultra-wide band pulse generator, and uses light to generate pulse...
7548570 Laser power control apparatus  
In a laser power control apparatus for controlling a laser power of a combination drive, first laser light Lc applied onto a first optical disk and second laser light Ld applied onto a second...
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...
7515618 High power laser using controlled, distributed foci juxtaposed in a stimulate Brillouin scattering phase conjugation cell  
In the laser system of the present invention, an acoustic grating (AG) established in an SBS cell by an initial laser pulse is forced into oscillation from noise. Since the process is nonlinear,...
7496120 Compact laser output monitoring using reflection and diffraction  
Compactness is preserved while enabling beam monitoring of optical properties of an output beam by employing a combination of reflection and diffraction. An input beam is reflected, divided using...
7483455 Control method and control circuit for laser diode, and optical transmitter using the same  
A control method for a laser diode is conducted such that optical output and OMA (optical modulation amplitude) or extinction ratio of the laser diode are controlled while modulating the optical...
7386017 Synthetic guide star generation  
A system for assisting in observing a celestial object and providing synthetic guide star generation. A lasing system provides radiation at a frequency at or near 938 nm and radiation at a...
7359412 Laser apparatus, laser irradiation method, and manufacturing method of semiconductor device  
It is an object to provide a laser apparatus, a laser irradiating method and a manufacturing method of a semiconductor device that make laser energy more stable. To attain the object, a part of...