| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 372030000 | Pulse | 15 |
| 20080212624 | 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 that are selectable under control of a user. The laser device conveniently generates long and short laser pulses or a mix of the two for performing specialized surgical procedures. | 09-04-2008 |
| 20080304525 | Method for Internal Laser Marking in Transparent Materials and Device for Implementing Said Method - The invention concerns a method for internal laser marking in transparent materials, for example for marking an identifier ( | 12-11-2008 |
| 20080310467 | Semiconductor light emitting devices and methods - A method for producing an optical output, including the following steps: providing first and second electrical signals; providing a bipolar light-emitting transistor device that includes collector, base, and emitter regions; providing a collector electrode coupled with the collector region and an emitter electrode coupled with the emitter region, and coupling electrical potentials with respect to the collector and emitter electrodes; providing an optical coupling in optical communication with the base region; providing first and second base electrodes coupled with the base region; and coupling the first and second electrical signals with the first and second base electrodes, respectively, to produce an optical output emitted from the base region and coupled into the optical coupling, the optical output being a function of the first and second electrical signals. | 12-18-2008 |
| 20090180500 | 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 the laser diode. A device for generating sub-nanosecond intense optical pulses includes a driver unit operative to generate a plurality of bipolar current pulses, and a semiconductor laser diode driven by the bipolar current pulses and operative to emit the intense optical pulses each of which has a substantially suppressed or completely eliminated emission tail. | 07-16-2009 |
| 20100002737 | Electronically controlled optical scanning - A device for generating light pulses that are separated in terms of time has a light source that emits a sequence of light pulses. A regulation signal is formed within a regulation circuit from a cycle signal and the light pulse sequence of the light sources via a phase detector. The regulation circuit includes a regulator that generates a setting signal that influences the repeat frequency of the light pulse sequence of the light source. | 01-07-2010 |
| 20100135347 | DEVICE AND METHOD FOR GENERATING BURSTS OF PICOSECOND OPTICAL SUB-PULSES - A method and device are provided for generating bursts of sub-pulses, preferably in the picosecond range. Seed pulses are first generated, and then phase modulated to spread their spectral profile to several time-dependent spectral components. The phase modulated seed pulses are then spectrally filtered to remove spectral components and retain only selected ones, creating gaps in the amplitude profile of the seed pulses which therefore form bursts of sub-pulses. Various parameters such as the modulation amplitude, the modulation frequency, the spectral characteristics of the filters and the overall amplitude of the seed pulses may be controlled to provide a great versatility and adaptability. | 06-03-2010 |
| 20100272138 | Laser driving apparatus, laser driving method, optical apparatus, optical unit and pulse current generation circuit - Disclosed herein is a laser driving apparatus, including: a driving unit adapted to current drive a laser device with a current value in accordance with a level of a signal supplied thereto; and an emission light waveform correction unit adapted to receive supply of a pulsed reference signal and generate, based on a correction timing pulse interlocked with a rising edge and/or a falling edge of a pulse, a correction signal having a level different from that of the reference signal and then supply the correction signal to the driving unit so that the shape of the emission light waveform of the laser device becomes close to that of a rectangular wave. | 10-28-2010 |
| 20110268142 | METHOD FOR HAVING LASER LIGHT SOURCE IN STANDBY STATUS - When the laser light source is caused to standby, the temperatures of semiconductor lasers are changed by approximately 3° C. from the temperature when the laser light source is always being used. With a temperature change of approximately 3° C., the wavelengths of the laser light generated by the semiconductor lasers change approximately 0.3 nm. This change hardly has any effect at all on optical fiber amplifiers, but the conversion efficiencies at the respective wavelength conversion elements of the wavelength conversion optical system change, and, particularly, deep ultraviolet light is hardly generated at all any longer. Therefore, even while the laser light has been made incident to the wavelength conversion optical system, there is no longer damaging of the wavelength conversion elements. Therefore, it is possible to provide a laser light source standby method that is able to shorten the start up time of the laser light source. | 11-03-2011 |
| 20120002690 | METHOD OF DRIVING A LASER DIODE - An ultrashort pulse/ultra-high power laser diode with a simple structure and configuration is provided. In a method of driving a laser diode, the laser diode is driven by a pulse current which is 10 or more times higher than a threshold current value. The width of the pulse current is preferably 10 nanoseconds or less, and the value of the pulse current is specifically 0.4 amperes or over. | 01-05-2012 |
| 20120044963 | APPARATUS FOR STABILIZING SECOND HARMONIC PULSE OUTPUT IN A LASER SYSTEM OPERATING BY PULSES - The present invention relates to an apparatus for stabilizing second harmonic wave pulse output in a laser system operating by pulses. The apparatus of the present invention comprises: a pulse laser oscillating unit ( | 02-23-2012 |
| 20120243568 | METHOD OF OPERATING ALL-FIBER-BASED ULTRA PULSE LASER SYSTEM - A method of operating an all-fiber-based ultra short pulse laser system is provided. The steps includes providing an all-fiber-based ultra short pulse laser system having a pulse pump light source, a fiber saturable absorber, an assistant light source, at least a dispersion fiber, and a light coupling output; generating a broadband ASE via the pulse pump light source; making the all-fiber-based ultra short pulse laser system switch passive mode locking via the fiber saturable absorber; decreasing the restoring period of the fiber saturable absorber via the assistant light source; providing dispersion compensation via the dispersion fiber to output an ultra short pulse; and partially outputting a laser passing through the all-fiber-based ultra short pulse laser system via the light coupling output. | 09-27-2012 |
| 20130272328 | STABILIZED FEMTOSECOND PULSED LASER AND STABILIZATION METHOD - The present invention relates to a high-power femtosecond pulsed laser, the laser including: a source able to generate a train of input laser pulses having an envelope frequency and a carrier frequency; a chirped pulse amplification unit; and, a unit for controlling the phase drift between the envelope frequency and the carrier frequency of the output laser pulses. According to the invention, the unit for controlling the phase drift between the envelope frequency and the carrier frequency includes electro-optical phase-modulation unit that are placed on an optical path of the chirped pulse amplification unit in order to stabilize the phase drift between the envelope frequency and the carrier frequency of the output laser pulses as a function of time. | 10-17-2013 |
| 20140098830 | EXTREME ULTRAVIOLET LIGHT GENERATION SYSTEM - An extreme ultraviolet light generation system may include an optical device configured to cause an optical path of a pulse laser beam to approximately match one of a first optical path in which the pulse laser beam is focused at a plasma generation region and a second optical path in which the pulse laser beam passes outside the plasma generation region, and a control unit configured to output a control signal to the optical device so that the optical device sets the optical path of the pulse laser beam to the second optical path from when a predetermined time starts to when the number of pulses contained in a timing signal reaches a predetermined value and sets the optical path of the pulse laser beam to the first optical path from when the number of pulses reaches the predetermined value to when the predetermined time ends. | 04-10-2014 |
| 20150117481 | METHOD AND DEVICE FOR CONTROLLING A CARRIER-ENVELOPE PHASE AND/OR AN INTENSITY OF OUTPUT PULSES OF A PULSE LASER DEVICE - A method of controlling output pulses of a pulse laser device ( | 04-30-2015 |
| 20150131685 | OPTO-ELECTRONIC DEVICE AND PULSE PROCESSING METHOD - An opto-electronic device ( | 05-14-2015 |
