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8184262 |
Pulse to pulse energy equalization of light beam intensity
A system for equalizing pulse to pulse energy of a light beam includes a group of optical devices including an optical device configured to exhibit third order nonlinear properties. Transmission...
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8175127 |
System of method for dynamic range extension
The present invention generally relates to the operation of optical network equipment such as optical amplifiers. In one aspect, a method of operating an optical amplifier is provided such that...
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8160114 |
Single longitudinal mode laser diode
A single-mode, etched facet distributed Bragg reflector laser includes an AlGaInAs/InP laser cavity, a front mirror stack with multiple Fabry-Perot elements, a rear DBR reflector, and a rear...
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8155159 |
Method and apparatus for calibrating burst mode laser transmitters
A method is provided to calibrate a monitor photodiode that measures the optical output power generated by an optoelectronic transceiver module that includes a burst mode laser diode. The method...
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8101929 |
Diffraction free, self-bending airy wave arrangement
Methods and systems for Airy waves and Airy wavepackets or Airy beam generation from an input beam or pulse. Airy wavefronts and Airy wavepackets can be generated using Airy beam generation through...
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8098698 |
Active spectral control of DUV laser light source
According to aspects of an embodiment of the disclosed subject matter, a line narrowed high average power high pulse repetition laser micro-photolithography light source bandwidth control method...
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8085824 |
Optimization of laser parameters to achieve desired performance
One example disclosed herein relates to a method of at least partially optimizing one or more output performance parameters of a laser die. The method includes an act of identifying one or more...
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8014428 |
Mode-locked laser
The present disclosure provides in a first aspect a mode-locked laser for generating laser pulses. The mode-locked laser comprises an optical coupler and a first optical path capable of carrying...
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8000373 |
Methods and apparatus for generating RGB laser light
A dual-cavity single longitudinal mode (SLM) laser oscillator generates a pulsed laser signal having a long pulsewidth, long coherence length, and good shot-to-shot energy stability. The laser...
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7991029 |
Optical module
A cut-out portion of a ground conductor is located in a region where a header faces a flexible board from the junction of a signal pin and a signal line and faces the signal line. The size of the...
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7983314 |
Polarization stable lasers
Techniques, devices and applications of polarization stable lasers to provide laser operations against changes, variations or fluctuations in optical polarization in a laser cavity.
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7978740 |
Ultralow noise mode-locked laser and RF sinewave source
Systems, devices and methods of generating both a precision electrical timing signal as well as a precision optical timing signal. A novel, modified opto-electronic loop oscillator is used to drive...
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7970039 |
Laser apparatus
In a first embodiment, the invention makes use of a Neodymium doped YAG (Nd:YAG) gain medium placed in an optical resonant cavity formed by two mirrors. Power extraction is maximized for a specific...
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7967452 |
Projection type display apparatus
A projection type display apparatus is provided that is safe even when a person looks directly into a laser beam. A laser operation control unit sets the output power of at least one laser source...
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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...
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7970028 |
System and methods for speckle reduction
A method of operating a laser source comprising is provided. The method reduces speckle contrast in a projected image by creating a plurality of statistically independent speckle patterns. The...
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7961766 |
Method and system for controlling wavelengths of multi-path laser
A method for controlling wavelengths of a multi-path laser is provided. The method includes: obtaining a difference between an actual output wavelength and a target output wavelength of each laser...
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7961772 |
Optimized pulse pumped laser system using feedback
A laser system according to the invention comprises pump generating means (x02, x03) for generating at least a first and a second, preferably focused, pump beam, and lasing means (x06, x07) for...
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7957438 |
Method and device for monitoring light
A method for monitoring laser light launched into a core of a single mode fiber includes launching a portion of light directly into the cladding about the core. The cladding launched light is a...
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7948669 |
Methods of optimizing spur-free dynamic range or gain in electro-absorption modulators
Exemplary methods of maximizing a spur-free dynamic range (SFDR) or a gain of an electro-absorption modulator (EAM) are disclosed. At least one parameter in a set of design parameters for an EAM is...
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7940819 |
Tunable laser module, tunable laser apparatus and controlling method for tunable laser
A tunable laser module includes a tunable laser section including a gain medium and a wavelength filter having a periodic characteristic which brings about a discontinuous variation of an...
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7929581 |
Testing method of wavelength-tunable laser, controlling method of wavelength-tunable laser and laser device
A testing method of a wavelength-tunable laser having a resonator including wavelength selection portions having wavelength property different from each other includes a first step of controlling...
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7929585 |
High brightness semiconductor laser diode arrays
Systems and methods for high brightness, improved phase characteristics laser diodes.
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7924893 |
Method and system for switching of tunable lasers
The invention provides a method and laser system for switching from a current operating point to a new operating point of the laser, the laser operating at a particular wavelength and includes a...
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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...
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7907656 |
Harmonic frequency conversion module
A harmonic frequency conversion module is disclosed including a polarization maintaining (PM) fiber optical link for providing an output stabilized from power fluctuation by the inclusion of one or...
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7899097 |
Synchronized delay-coupled laser system
A synchronized delay-coupled laser system includes at least two lasers. Each laser includes a laser fiber with a coupling means for coupling to a laser pump. The lasers are coupled to each other by...
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7899096 |
Methods and circuits for controlling drive mechanisms
A method for aligning an optical package includes applying a dither waveform and an advancement waveform to a drive mechanism. The optical package includes a semiconductor laser operable to emit an...
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7894495 |
Power stabilized laser diode array
A system for controlling optical-power stability of emitting laser diodes (204), the laser diodes exhibiting temperature changes at the laser diode junctions (312), the temperature changes are...
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7891818 |
System and method for aligning RGB light in a single modulator projector
A projection system that includes a singe light modulation device and a plurality of light sources of different wavelengths. Each wavelength of light is incident on the light modulation device at a...
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7885540 |
Methods and apparatus for optical modulation amplitude measurement
Techniques for measuring optical modulation amplitude (OMA) are disclosed. For example, a technique for measuring an OMA value associated with an input signal includes the following...
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7873085 |
Method and device for controlling optical output of laser diode
A method of controlling an optical output of a laser diode includes applying a bipolar current pulse to the laser diode, thereby substantially suppressing the emission tail of the optical output of...
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7873090 |
Surface emitting laser, photodetector and optical communication system using the same
A surface emitting laser includes a plurality of light-emitting portions for emitting laser light beams in different linearly polarized light directions. The light-emitting portions are formed on...
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7869717 |
Optical communication light source unit and wavelength monitoring control method
In the present invention, the extremely complicated setting and control and an extremely expensive optical component (wavelength locker) are not required, and optical output wavelength and optical...
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7856037 |
System of method for dynamic range extension
The present invention generally relates to the operation of optical network equipment such as optical amplifiers. In one aspect, a method of operating an optical amplifier is provided such that...
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7852889 |
Active spectral control of DUV light source
According to aspects of an embodiment of the disclosed subject matter, a line narrowed high average power high pulse repetition laser micro-photolithography light source bandwidth control method...
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7852888 |
Laser source with coherent beam recombination
A laser source is disclosed with coherent recombination of N spatial monomode laser beams having N phase shifters controlled by a phase-lock device (3). The phase-lock device has an optical device...
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7852887 |
Laser
A pulsed laser is disclosed comprising an active lasing medium (1), an output coupler (5) and a rear cavity mirror (6). The rear cavity mirror (6) is attached to a mount (21) via an intermediate...
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7848380 |
Method and apparatus for modifying out of band reflection for a laser element
A method and apparatus for modifying the out of band reflection of a laser element is described. The laser element includes an active medium excited by optical pumping means to produce stimulation...
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7843977 |
Light source that utilizes small footprint reference gas cells for multiple laser frequency stabilization
A light source and the method for operating the same are disclosed. The light source includes first and second lasers, and first and second wavelength control assemblies. The lasers emit first and...
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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...
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7835411 |
Laser frequency stabilizing device, method and program
A laser frequency stabilizing device comprises a laser light producer operative to produce and emit a laser light containing a first and a second longitudinal mode light having different...
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7830931 |
Semiconductor laser excitation solid laser device and an image formation device having the same
A semiconductor laser excitation solid laser control device 1A according to the present invention is a control device for stabilizing a light quantity of an output light LO of a semiconductor laser...
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7830926 |
Tunable device, method of manufacture, and method of tuning a laser
This description relates to an apparatus, a method of manufacturing, and a method of tuning optical and/or electrical parameters of semiconductor devices and materials, thin film materials, or...
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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...
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7822096 |
Alignment and wavelength selection in external cavity lasers
A method of operating a laser projection system is provided. The projection system comprises an external cavity laser, an optical intensity monitor, laser projection optics, and a controller. The...
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7822084 |
Method and apparatus for stabilizing and tuning the bandwidth of laser light
According to aspects of an embodiment of the disclosed subject matter, method and apparatus are disclose that may comprise adjusting a differential timing between gas discharges in the seed laser...
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7822086 |
Laser projection temperature compensation
The temperature of a laser diode changes in response to video content across a line of a displayed image, and the radiance changes as a function of temperature. An adaptive model estimates the...
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7792170 |
Semiconductor laser
A semiconductor laser having an oscillation wavelength λ (nm) and comprising at least a substrate, a first-conduction-type clad layer having an average refractive index N1cld, an active layer ...
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7787504 |
Optical supply arrangement
In an optical supply arrangement, a laser source (10) provides transmitted laser light down an optical supply line (12, 14). A first coupler (16), remote from the laser source (10) along the...
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