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| Number | Title | Issue Date |
| 8179929 | Apparatus and method for side mode suppression in slave-master laser by single mode fiber amplifier A laser system for effective injection seeding is configured with a master oscillator lasing a narrowband seed radiation which is characterized by a single longitudinal master mode injected into a slave oscillator so that the latter generates a broadband slave radia... | 05/15/2012 |
| 8139617 | Mode-locker comprising a graphene, and pulse laser device comprising the same The present invention relates to a mode-locker including a graphene and a laser pulse device. The mode-locker mode-locks a laser that propagates through a laser oscillation loop. The mode-locker includes: i) a core; ii) cladding that surrounds the core, wherein a gr... | 03/20/2012 |
| 8130801 | Method of and photonic device for eliminating or substantially reducing sensitivity to polarization of an injected optical signal and method of manufacturing such photonic device An photonic device, comprising one section of a material which is different from the material of another section such that the two sections present different optical birefringent index values. This causes a first set of polarization modes to move in a spectral space... | 03/06/2012 |
| 8111722 | Low-noise RF oscillation and optical comb generation based on nonlinear optical resonator Techniques and devices based on optical resonators made of nonlinear optical materials and nonlinear wave mixing to generate RF or microwave oscillations and optical comb signals. ... | 02/07/2012 |
| 8018979 | Mode-locked short pulse laser resonator and short pulse laser arrangement A mode-locked short pulse laser resonator including a pump laser beam input, a non-linear laser medium, a plurality of resonator mirrors as well as a first outcoupler mirror and a second outcoupler mirror, wherein the first outcoupler mirror is arranged for coupling... | 09/13/2011 |
| 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 optical signals from and to the optical coupler. The first optical path... | 09/06/2011 |
| 8005122 | Mode-locked laser A mode-locked laser includes a two-electrode semiconductor laser (3) including a saturable absorber section (31) and gain section (32), and an optical waveguide (4) formed outside the gain section (32) of the two-electrode semicond... | 08/23/2011 |
| 7991023 | Multi-band multiwavelength quantum dot mode-locked lasers A multi-band (multi-color) multiwavelength mode locked laser diode is provided by dynamic phase compensation of a quantum dot active medium. The laser diode is provided with a PIN diode structure where the active medium consists of a plurality of layers of quantum d... | 08/02/2011 |
| 7953127 | Mode-locked solid-state laser apparatus In a mode-locked laser-diode-excited laser apparatus: a solid-state laser medium is arranged at a distance of at most twice the Rayleigh range from a saturable absorbing mirror with a depth of absorbing modulation of at least 0.4%; the total intracavity dispersion i... | 05/31/2011 |
| 7949018 | Mode-locked solid-state laser apparatus In a mode-locked laser-diode-excited laser apparatus: a solid-state laser medium is arranged at a distance of at most twice the Rayleigh range from a saturable absorbing mirror with a depth of absorbing modulation of at least 0.4%; the total intracavity dispersion i... | 05/24/2011 |
| 7940817 | Method for organizing a mode-locked pulse train by pump modulation A method to stabilize the repetition rate in a passive harmonic mode-locked fiber laser employing semiconductor saturable absorbers. The pulse organization is accomplished by electrically modulating the amplifier pump source that in turn optically modulates the satu... | 05/10/2011 |
| 7940818 | Passively mode locked quantum cascade lasers This invention relates to a self-induced transparency mode-locked quantum cascade laser having an active section comprising a plurality of quantum well layers deposited in alternating layers on a plurality of quantum barrier layers and form a sequence of alternating... | 05/10/2011 |
| 7933300 | Resonant fabry-perot semiconductor saturable absorbers and two photon absorption power limiters 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 la... | 04/26/2011 |
| 7929580 | Inexpensive terahertz pulse wave generator Pulses of signals in the terahertz region are generated using an apparatus made up of a mode-locked semiconductor laser diode with a short duty cycle that is optically coupled to a biased Auston switch. The output from the mode-locked semiconductor laser diode may f... | 04/19/2011 |
| 7916762 | Phased laser array with tailored spectral and coherence properties Architectures for coherently combining an array of fiber-based lasers are provided. By matching their lengths to within a few integer multiples of a wavelength, the spatial and temporal properties of a single large laser are replicated, while extending the average o... | 03/29/2011 |
| 7907645 | High energy, all fiber, mode locked fiber laser Methods and systems for generating high energy, mode locked, femtosecond and picosecond laser pulses are disclosed, including generating electromagnetic radiation from a pump laser; coupling the electromagnetic radiation to a rare Earth doped fiber using a pump/sign... | 03/15/2011 |
| 7889768 | Mode-locked solid-state laser apparatus A mode-locked solid-state laser apparatus having a resonator which includes a solid-state laser medium, a saturable absorption mirror, and a negative group dispersion element therein, in which the solid-state laser medium and the saturable absorption mirror are disp... | 02/15/2011 |
| 7881348 | Mode-locked laser device A mode-locked laser device includes a Fabry-Perot resonator, a mode-locking element disposed within the resonator, a solid-state laser medium disposed within the resonator, and exciting means for applying excitation light to the solid-state laser medium. The opposit... | 02/01/2011 |
| 7873079 | Carrier-suppressed optical pulse train generation method and mode-locked semiconductor laser diode for realizing this method A CS optical pulse train generation method, which is able to change the half width of an optical pulse constituting a CS optical pulse train, and which is compact and has low power consumption. A distributed Bragg reflector semiconductor laser utilized in this metho... | 01/18/2011 |
| 7873080 | Wavelength or pulsewidth tunable mode-locked fiber laser system A wavelength-tunable mode-locked fiber laser system is provided and includes an optical cavity. The optical cavity outputs an output laser pulse having an adjustable principal wavelength, and includes a short-wavelength-pass filter, a polarization controller, an opt... | 01/18/2011 |
| 7864821 | Mode-locked solid-state laser apparatus In a soliton mode-locked solid-state laser apparatus having a resonator which includes therein a solid-state laser medium, a saturable absorption mirror, and a negative group velocity dispersion element, the solid-state laser medium and saturable absorption mirror a... | 01/04/2011 |
| 7817684 | Passively modelocked figure eight fiber laser A passively mode-locked, figure-eight laser is formed of all normal dispersion fiber, eliminating the need for using anomalous dispersion fiber. The fiber is selected to be polarization maintaining, with the remaining components of the laser (couplers, isolator, gai... | 10/19/2010 |
| 7813388 | Self-pulsating laser diode Provided is a self-pulsating laser diode including: a distributed feedback (DFB) section serving as a reflector; a gain section connected to the DFB section and having an as-cleaved facet at one end; a phase control section interposed between the DFB section and the... | 10/12/2010 |
| 7801187 | Mode-locked laser device A mode-locked laser device includes a Fabry-Perot resonator, a mode-locking element disposed within the resonator, a solid-state laser medium disposed within the resonator, and exciting means for applying excitation light to the solid-state laser medium. The opposit... | 09/21/2010 |
| 7733923 | Wide-bandwidth mode-locked laser A mode-locked laser that has an optical cavity containing multiple optical amplifiers, each dedicated to a respective spectral portion of an optical signal generated by the laser, wherein the dispersion effects are managed by utilizing a separate intra-cavity phase ... | 06/08/2010 |
| 7701982 | Apparatuses and methods for stabilizing carrier-envelope phase of laser pulse by using direct locking method Apparatus for stabilizing carrier-envelope phase (CEP) of laser pulse generated by mode locked pulsed laser based on direct locking method includes laser oscillator, interferometer, detector and double feedback circuit. The laser oscillator includes the mode locked ... | 04/20/2010 |
| 7693192 | Mode-locked laser device A mode-locked laser device includes a Fabry-Perot resonator, a mode-locking element disposed within the resonator, a solid-state laser medium disposed within the resonator, and exciting means for applying excitation light to the solid-state laser medium. The opposit... | 04/06/2010 |
| 7668213 | Method and apparatus for obtaining and maintaining mode-locking in fiber laser systems A method and apparatus for detecting and controlling the conditions needed for starting and maintaining mode-locked operation of a laser system including a fiber oscillator and high power fiber amplifier. The invention is used to monitor the output power and repetit... | 02/23/2010 |
| 7649915 | Pulsed laser sources 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... | 01/19/2010 |
| 7613214 | Multi-wavelength mode locked laser A mode-locked laser employs a light-wavelength-dependent, path-length adjuster to provide different path-lengths for multiple light frequencies and dual modulation frequencies selecting multiple modes with different wavelengths. The result is a single cavity laser p... | 11/03/2009 |
| 7590156 | High intensity MHz mode-locked laser Systems, configurations and methods of using an ultrafast, self-starting, mode-locked laser are provided. The systems, devices and methods of using stable, self-starting mode-locked lasers, can be compact, use fewer optical elements and have energies sufficient for ... | 09/15/2009 |
| 7555023 | Quasi-synchronously pumped lasers for self-starting pulse generation and widely tunable systems A laser system for generating self-starting few cycle laser pulses or widely tunable laser pulses is provided. The laser system includes a modelocked pump source that provides a pulsed pump signal. A gain medium receives the pulsed pump signal. A resonator structure... | 06/30/2009 |
| 7542489 | Injection seeding employing continuous wavelength sweeping for master-slave resonance A method for effective injection seeding is based on continuous wavelength sweeping for matching the injected seeds with one or more longitudinal mode(s) of the slave oscillator in every pump pulse. This is achieved through rapidly varying laser drive current result... | 06/02/2009 |
| 7532650 | Unstable monoblock laser cavity A monoblock laser cavity includes a plurality of discrete optical components disposed serially on a substrate and sharing a common optical axis. The optical components include a laser rod of gain material, a Q-switch, an OPO crystal, and an output coupler. The outpu... | 05/12/2009 |
| 7526004 | Mode-locked laser apparatus A mode-locked laser apparatus includes a resonator (laser cavity), a mode-locking device placed in the resonator, a solid-stated laser medium that is doped with Yb (ytterbium) and placed in the resonator and an excitation means for causing excitation light to enter ... | 04/28/2009 |
| 7519091 | All-optical 2R regenerator using self-seeded laser diode The present invention is a self-seeded laser diode. The laser diode obtains a gain by itself without using expansive erbium-doped fiber amplifiers. Hence, the cost is reduced and the system is simplified. ... | 04/14/2009 |
| 7519092 | Tunable laser source with optical wavelength addressing An optical apparatus including a tunable master laser from which all or some of a beam is injected into at least one “slave ” laser having a cavity with an amplifier medium and a dynamic holographic medium that forms a self-adapted spectral filter to maintain os... | 04/14/2009 |
| 7505488 | Synthetic aperture ladar with chirped modelocked waveform The present invention uses an intra-cavity modulation approach to modulate a laser transmitter at bandwidths greater than a few gigahertz (GHz) in a non-ambiguous waveform by chirping the laser and simultaneously mode locking. Accordingly, the inventive system inclu... | 03/17/2009 |
| 7505489 | Ultrahigh energy short pulse lasers A Chirped pulse amplification (CPA) fiber laser system. The CPA fiber laser system includes a fiber mode-locking (ML) oscillator implemented as a cavity dumped ML oscillator including a cavity dumper for generating a seed laser at a reduced repetition rate to projec... | 03/17/2009 |
| 7483453 | Frequency setting of a multisection laser diode taking into account thermal effects A system in which the controller (24) of a multi section diode laser such as a SG-DBR (10) is configured so that the laser can be swept rapidly in a pre-determined frequency direction through a series of frequency points by asserting a pre-calibrated s... | 01/27/2009 |
