1395 results about "Laser technology" patented technology

The invention relates to optical microscopy, and more particularly to the methods for photothermal examination of absorbing microheterogeneities using laser radiation. The invention can be widely used in laser technique, industry, and biomedicine to examine transparent objects with absorbing submicron fragments, including detection of local impurities and defects in super-pure optical and semiconducting materials and non-destructive diagnostics of biological samples on cellular and subcellular levels.The object of the present invention is to increase sensitivity, spatial resolution and informative worth when examining local absorbing heterogeneities in transparent objects, as well as to detect the size of said heterogeneities even if said size is smaller than the radiation wavelength used.Said object is achieved by the pump beam irradiation of a sample, the duration of said irradiation not being longer than the characteristic time of cooling of the microheterogeneity observed. A relatively vast surface of the sample is irradiated at once, the size of said surface not being larger than the wavelength of the pump laser used. The refraction index thermal variations, induced by the pump beam in the sample and being the result of absorption, are registered by the parameter change of the probe laser beam. A chosen probe beam diameter should not be smaller than the pump beam diameter. The diffraction-limited phase distribution over the probe laser beam cross-section is transformed to an amplitude image using a phase contrast method. The properties of microheterogeneities are estimated by measuring said amplitude image.

The invention discloses a pole piece laser cutting machine. The machine comprises a base frame part, a laser cutter, a cutting manipulator part, a control system and at least a piece feeding component, wherein the cutting manipulator part is used for driving the laser cutter; each piece feeding component comprises a material clamping manipulator part, a feeding fixed-length part and an emptying part; the cutting manipulator part and the material clamping manipulator part are installed on the base frame part; the feeding fixed-length part is arranged between the material clamping manipulator part and the emptying part; and the control system is connected with the cutting manipulator part, the material clamping manipulator part and the feeding fixed-length part. The machine has the following beneficial effects: the machine realizes the piece preparation processes of the lithium ion batteries or super capacitors by adopting the laser technology, can solve the problem that the pole pieces are easy to deform and have bigger burrs as the traditional cutting processes are adopted in the prior art, simultaneously improves the piece preparation process quality under the control of the control system and increases the yield.

The present disclosure is grounded in field study of habits of many species of animals, such as birds and bats to provide some examples, as well as their anatomical composition. This study has allowed an understanding of ingrained responses of these animals that can be modified by a biological understanding of physiology, sound and ultrasound technology, laser technology, and intelligent animal recognition. The unique coordination between these specialized technologies provides for animal casualty prevention in a sustainable way that achieves unprecedented success in diverting or deterring animals from their collision course with objects, such as wind turbines or aircraft to provide some examples. Moreover, the present disclosure does not substantially affect the well-being of the animals and does not introduce substantially harmful side-effects to the animals, their environment, and any surrounding human population.

The present invention relates to a system for detection and identification of airborne biological, chemical and / or nuclear threats such as toxins, spores, bacteria, and viruses in real time at distances from a few meters to several kilometers. Compact femtosecond terawatt laser technology is combined with spectroscopic and mathematical methods for spectral sensing of airborne warfare agents such as bio-aerosols. Trigger sensors and standoff devices based on mobile terawatt femtosecond laser systems are provided that may be placed at strategic monitoring locations. Furthermore, the invention relates to the propagation of airborne ultra-short, ultra-intense laser pulses giving rise to plasma channels (filamentation) producing white light supercontinuum ranging from the ultraviolet (UV), visible (VIS), near infra-red (NIR) and middle infra-red (MIR). According to this invention, the supercontinuum can be directly produced in a particle cloud and hence is uniquely suitable for multi-spectral long-range atmospheric agent and radioactive isotope detection.

A method and apparatus for spreading ballast along railways makes use of an inertial measurement system to determine where to apply ballast from a hopper car. A variety of techniques can be used to determine the location and speed of the ballast spreading train, including manual or automated visual techniques, laser technology, radar technology, radio frequency transponders, magnetic sensor, thermal imaging and aerial photogrammetry. The invention also contemplates “on the fly” surveys and terrain profiling using lasers or radar.

The present invention describes lead and arsenic free and preferably gadolinium and further preferably also fluorine free optical glasses for the application fields mapping, projection, telecommunication, optical communication engineering, mobile drive and / or laser technology with a refractive index of 1.75<=Nd<=1.85, an Abbe number of 34<=Vd<=44 and have a low transformation temperature, namely lower than or equal to 560 DEG C. and preferably lower than or equal to 550 DEG C., as well as good producability and processability and crystallisation stability. The glasses according to the present invention within the following composition range (based on oxide in % by weight) contain the following component B2O3, ZnO, La2O3, Ta2O5.