9 results about "Laser pulse shaping" patented technology

A method includes receiving a plurality of laser pulses as a pulse train on a plurality of imaging sensor pixels in an array of pixels. For each pixel in the array of pixels, the method includes receiving a respective one of the laser pulse trains, and scanning the pixels response across a range of frequencies with a bandpass filter to determine pulse shape characteristics of the respective one of the laser pulse trains. The method includes filtering out all of the laser pulse trains that do not fit a predetermined pulse shape characteristic for a true target designation pulse train, and physically adjusting trajectory of a physical resource toward a target based on location on the imaging sensor of one or more pixels receiving a laser pulse train that fits the predetermined pulse shape characteristic for the true target designation pulse train.

The application relates to the technical field of laser processing, and particularly provides a laser pulse shaping device, a laser device and a laser pulse shaping method.The device comprises a first connecting piece, a second connecting piece and a light blocking piece; the first connecting piece is configured to connect a pre-amplification device and output first light; the first light comprises first laser pulses and continuous light; the second connecting piece is arranged at intervals from the first connecting piece; the second connecting piece is configured to connect a main amplification device and input second laser pulses to the main amplification device; the pulse width of the second laser pulses is smaller than that of the first laser pulses; the light blocking piece is arranged between the first connecting piece and the second connecting piece; the light blocking piece is provided with a light blocking part, the light blocking piece can rotate at a target frequency and a target time delay relative to the first light, the light blocking part blocks the continuous light and shapes the first laser pulses to obtain the second laser pulses. The application shapes and blocks the continuous light of the laser through the light blocking piece, effectively improves the peak power, and improves the processing quality and efficiency.

The catheter system 100 includes a power source 124, a controller 123, and a light guide 122. The power source 124 generates a plurality of energy pulses 242B, 342B. The controller 123 controls the power source 124 so that the plurality of energy pulses 242B, 342A-B cooperate to generate composite energy pulses 348A-B, 448A-C, 548A-F having a composite pulse shape. The light guide 122 receives the composite energy pulses 348A-B, 448A-C, 548A-F. The light guide 122 radiates optical energy away from the light guide 122 to generate plasma pulses 246A-B, 346A-B away from the light guide 122. The power source 124 can be a laser, and the light guide 122 can be an optical fiber. Each of the energy pulses 242B, 342A-B has a pulse width, and the energy pulses 242B, 342A-B are added together such that the resulting energy pulse 348A-B, 448A-C, 548A-F has a pulse width longer than the pulse width of any of the energy pulses 242B, 342A-B. The at least two energy pulses 242B, 342A-B can have the same wavelength or different wavelengths.

The invention relates to the technical field of laser processing, and particularly provides a laser pulse shaping device, laser equipment and a laser pulse shaping method, and the device comprises a first connecting piece, a second connecting piece and a light blocking piece; the first connecting piece is configured to be connected with the pre-amplifying device and output first light; the first light comprises a first laser pulse and continuous light; the second connecting pieces and the first connecting pieces are arranged at intervals; the second connecting piece is configured to be connected with the main amplifying device and input a second laser pulse to the main amplifying device; the pulse width of the second laser pulse is smaller than that of the first laser pulse; the light blocking piece is arranged between the first connecting piece and the second connecting piece; the light blocking piece is provided with a light blocking part, the light blocking piece can keep rotation of target frequency and target time delay relative to the first light, continuous light is blocked through the light blocking part, the first laser pulse is shaped, and a second laser pulse is obtained. The laser is shaped and continuous light is blocked through the light blocking piece, the peak power is effectively improved, and the machining quality and efficiency are improved.

A catheter system for placement in a blood vessel having a vessel wall.SOLUTION: The catheter system includes a power source, a controller, and a light guide. The power source generates a plurality of energy pulses 342B. The controller controls the power source such that the plurality of energy pulses cooperate to produce a resultant energy pulse 348B having a resultant pulse shape. The light guide emits optical energy in a direction away from the light guide to generate a plasma pulse 346B away from the light guide. The power source may be a laser and the light guide may be an optical fiber. Each of the energy pulses 342B has a pulse width and are added together such that the combined energy pulse has a pulse width that is longer than the pulse width of any of the energy pulses. The at least two energy pulses can have the same wavelength or different wavelengths from each other.SELECTED DRAWING: Figure 3B

Described herein are methods for developing and maintaining pulses that are produced from compact resonant cavities using one or more Q-switches and maintaining the output parameters of these pulses created during repetitive pulsed operation. The deterministic control of the evolution of a Q-switched laser pulse is complicated due to dynamic laser cavity feedback effects and unpredictable environmental inputs. Laser pulse shape control in a compact laser cavity (e.g., length / speed of light <˜1 ns) is especially difficult because closed loop control becomes impossible due to causality. Because various issues cause laser output of these compact resonator cavities to drift over time, described herein are further methods for automatically maintaining those output parameters.

The application belongs to the technical field of laser drilling, and provides a 5G ceramic medium filter femtosecond laser drilling device and method, which comprises a femtosecond laser, and a pulse energy adjusting and controlling system, a laser pulse shaping system and a laser rotary drilling system arranged on the light beam path of the femtosecond laser. The femtosecond laser is used as a drilling light beam, has the advantages of high peak power, short action time, low material processing threshold and micron-level focused light spot, etc., can avoid the melting of the 5G ceramic medium filter material, instantaneously change the material on the 5G ceramic medium filter into plasma and emit it away, realize drilling in a very short time when heat has no time to transfer between electrons and lattices in the 5G ceramic medium filter material, and avoid the generation of thermal effects.

The application relates to a windowing method of an LED panel solder resist layer, a laser processing device, a system, computer equipment, a computer readable storage medium, a computer program product and an LED panel. The method comprises the following steps: emitting a plurality of laser pulses to a to-be-processed solder resist layer on an LED panel through a laser, a rotating mirror and a target diaphragm are arranged on the light path of each laser pulse, the target diaphragm is used for shaping each laser pulse into a preset window structure shape, and the laser pulse is used for forming a window structure with the preset window structure shape at a corresponding action point position; adjusting the position of the action point position of each laser pulse on the to-be-processed solder resist layer through the rotating mirror and a processing position regulating device, so that each window structure formed by each laser pulse on the to-be-processed solder resist layer is arrayed; the rotating mirror is used for adjusting the displacement component of the action point position in a first direction, and the processing position regulating device is used for adjusting the displacement component of the action point position in a second direction. The windowing efficiency of the solder resist layer can be improved by adopting the method.

This invention proposes a system and method for generating ultra-intense broadband terahertz waves using a structured, diffraction-free, chirped femtosecond laser. In the system, a first femtosecond laser emitted by a femtosecond laser is split by a beam splitter to obtain a pump beam and a probe beam. An optical parametric amplifier modulates the pump beam into a second femtosecond laser, which, after passing through a laser pulse shaper, outputs a chirped-modulated third femtosecond laser. A reflective spatial light modulator converts and reflects the incident third femtosecond laser, and the reflected fourth femtosecond laser is reflected by a second mirror to a first off-axis parabolic mirror. After focusing, it is incident on a BBO crystal, converting part of the light into a second harmonic wave. The remaining light from the fourth femtosecond laser, along with the second harmonic wave, is focused into air, generating air plasma. The air plasma radiates terahertz waves. These terahertz waves are incident on a second off-axis parabolic mirror and reflected as collimated terahertz waves. This invention generates ultra-intense broadband terahertz waves with flexible spectral polarization control.