12 results about "Ktp laser" patented technology

A laser-plasma synergistic surface treatment method for CFRP / titanium alloy heterojunctions belongs to the field of heteromaterial bonding technology. First, nanosecond pulsed lasers are used to etch the surfaces of CFRP and titanium alloy to be bonded, constructing a micro-nano composite structure. Then, atmospheric pressure cold plasma is used to activate the etched surfaces, grafting polar functional groups. Finally, the two are bonded and cured using an adhesive. This invention achieves a dual enhancement effect of "mechanical interlocking" and "chemical bonding" by organically combining "laser etching to construct micro-nano physical structures" and "plasma activation to introduce chemical functional groups," significantly improving the interfacial bonding strength of CFRP / titanium alloy heterojunctions. Compared with single treatment methods, this invention can increase the joint shear strength by more than 38%, and the failure mode changes from interfacial failure to cohesive failure. It has advantages such as environmentally friendly process, good controllability, and significant effects, and has broad application prospects in aerospace, high-end equipment manufacturing, and other fields.

This invention provides a frequency-domain shaping laser-plasma resonance sintering system using aerosol jetting. The localized strong electromagnetic field excited by LSPR can induce electron cloud rearrangement and chemical bond reconstruction at the interface of adjacent nanoparticles, forming an atomic-level interdiffusion transition layer. This invention precisely controls the laser wavelength through frequency-domain shaping technology to match the LSPR characteristic peaks of the nanoparticles, maximizing the local electromagnetic field enhancement effect. This allows for the completion of nanoparticle melting and necking formation at ultra-low laser power, overcoming the energy efficiency limitations of traditional post-processing techniques such as high-temperature furnace heating. Simultaneously, this process is completed within the femtosecond to picosecond timescale, avoiding component segregation caused by high-temperature thermal diffusion and significantly improving the bonding strength of the nanoparticle interface. Furthermore, it achieves nanoscale selective heating, completing particle melting and necking formation at ultra-low laser power, avoiding overall thermal damage.

Provided is an illumination device having a sufficiently large irradiation angle and a uniform light intensity within a predetermined range even when a light source using light having a small external expansion angle such as laser light or light close to parallel light is used. The illumination device includes a light source having at least one light emitting unit; a first optical element that receives light emitted from the light source and increases the emission angle of the light; and a second optical element that receives light emitted from the first optical element and further increases the irradiation angle of the light.

This invention discloses a closed-loop precise control method and system for laser-induced acoustic pressure wave (APW) in complex intravascular lesions. This method belongs to the field of laser medical technology. This application employs a physical model for APW generation coupled with a laser-plasma-liquid medium, and designs an APW simulation calculation and tunable laser control system based on this model. By adjusting parameters such as the wavelength, pulse width, and peak power density of the tunable laser, precise forward control of the generated APW intensity is achieved. Simultaneously, based on the target APW intensity required clinically, the optimal laser parameter combination can be iteratively calculated in reverse, forming a closed-loop design from "treatment target" to "laser parameters." This invention combines a laser physical model with clinical needs, realizing the quantification, predictability, and controllability of APW intensity, providing a precise and intelligent technical solution for the treatment of intravascular calcification. It can significantly simplify physician operations and improve the safety and effectiveness of treatment.

The present application provides an isothermal heating method, a phase transition measurement method, and a pulse laser isothermal heating system. The isothermal heating method comprises: acquiring a target sample; and within a preset target duration, using a target laser to irradiate a target area on the target sample, so that the temperature of the target area is maintained at a preset temperature within a preset temperature error range. By means of the isothermal heating method, the accuracy and consistency of experimental results are ensured, thereby accurately determining the correspondence between the phase transition temperature and the phase transition time.

This invention discloses a method for treating microplastics in water, belonging to the field of water environment management technology. This invention utilizes laser plasma to degrade microplastics. The laser plasma can not only directly act on the surface of microplastics to promote degradation, but also act on an iron substrate to generate iron / iron oxide nanoparticles adsorbed on the surface of the microplastics. These nanoparticles participate in the subsequent degradation reaction in the UV / H2O2 system. Compared with traditional Fenton reaction degradation, the pretreated microplastics show better degradation performance in the UV / H2O2 system, and can degrade PE microplastic particles into smaller particles more quickly, reducing the particle size to below nm.

A laser pumping method includes pumping a gas laser medium in a laser chamber by heating electrons in the gas laser medium with electromagnetic radiation from an electromagnetic source, resulting in populating the upper laser level. Electron density in a plasma formed in the gas laser medium is generated and controlled with an electron source that is internal or external to the laser chamber. A high-power excimer laser includes a laser chamber containing a high-power gas laser medium, a pulsed electromagnetic source configured to heat free electrons in the laser medium and thereby generate laser emissions from the gas laser medium, and a pulsed electron source configured to generate free electrons and control the electron density in the gas laser plasma medium.

The application provides an isothermal heating method, a phase change measurement method and a pulsed laser isothermal heating system. The isothermal heating method comprises the following steps: obtaining a target sample; and irradiating a target region on the target sample with a target laser within a preset target time length, so that the temperature of the target region is maintained at a preset temperature within a preset temperature error. Through the isothermal heating method, the accuracy and consistency of experimental results are ensured, so that the corresponding relationship between the phase change temperature and the phase change time can be accurately determined.

The application discloses a kind of based on laser plasma flame to super-large super-thick plate composite processing device, belong to plate processing equipment field, this based on laser plasma flame to super-large super-thick plate composite processing device, including base, still include: material carrying mechanism, the material carrying mechanism is set to the top surface of the base, the material carrying mechanism is used to carry and move super-large super-thick plate;Laser plasma flame gun, the laser plasma flame gun is set to the central upper side of the base, the laser plasma flame gun is used to process and handle super-large super-thick plate on material carrying mechanism;Laser plasma flame machine, the laser plasma flame machine is set to the upper side of the base side.This application can not only facilitate equipment to process and cut different models of super-large super-thick plate, but also can purify the flue gas generated during processing and cutting process, reduce the pollution of flue gas to worker's health and whole working environment.

The application provides a winding device for a laser plasma X-ray source strip target, and belongs to the field of a laser plasma strip target winding device.The winding device for a laser plasma X-ray source strip target comprises a strip unwinding mechanism for unwinding a target strip winding; the strip unwinding mechanism comprises a strip unwinding fixing disc, the strip unwinding fixing disc is provided with a target strip winding groove for placing the target strip winding, and the strip unwinding fixing disc can be driven to rotate; a guide mechanism is arranged on a strip unwinding path of the target strip winding and used for guiding the target strip winding; and a strip winding mechanism for winding the target strip winding is arranged; the strip winding mechanism comprises a strip winding fixing disc, the strip winding fixing disc is provided with a strip winding rotating shaft, and the strip winding rotating shaft can be driven to rotate.The original target strip provided by a supplier can be directly placed into the winding device, and the original target strip can be rewound into a new target strip, and the end face of the new target strip is neat, the tension is uniform, and the surface is flat.

This utility model discloses an automatic internal and external diameter detection machine, including a frame on which both an internal diameter detection mechanism and an external diameter detection mechanism are mounted. This utility model innovatively adopts an integrated structural design that combines internal and external diameter detection functions. This design eliminates the cumbersome process of traditional step-by-step internal and external diameter detection, enabling high-precision measurement of the workpiece's internal and external diameters simultaneously in a single clamping operation at the same workstation, significantly improving detection efficiency, especially suitable for mass production scenarios. Simultaneously, this utility model uses a high-precision mechanical transmission unit to directly acquire workpiece dimensional information through a contact measurement principle, completely avoiding the problem of non-contact measurements such as lasers being easily affected by workpiece surface characteristics, ensuring stable and reliable measurement results. Furthermore, the positions of the measuring contacts and measuring plates can be quickly and flexibly adjusted according to the dimensional requirements of different workpiece specifications, allowing a single device to cover the mass detection needs of multiple workpiece specifications.

This invention belongs to the field of laser countermeasures and multi-physics field synergistic damage technology, specifically involving a femtosecond laser plasma shock wave enhanced UAV electromagnetic damage device. The device includes: acquiring the target surface dielectric impedance characteristics and radiation path distribution information to generate an initial excitation parameter set; controlling an ultrafast laser source to output a first ionization pulse and a second excitation pulse with a preset micro-delay interval; projecting the first ionization pulse to induce avalanche ionization and construct a transient plasma layer; injecting the second excitation pulse to drive the plasma adiabatic expansion and release a directional ultra-high pressure shock wave; acquiring the shell micro-deformation field and broadband electromagnetic leakage signal, and performing wavefront phase-matching injection; dynamically reconstructing the pulse time domain and energy ratio based on the synergistic evaluation results until a preset hardware deactivation criterion is met. This invention can solve the problem that single-mode damage is difficult to penetrate composite protective layers.