Quartz Laser Welding Following the laser pulse, the oscillation frequency increases up to 1.3 kHz over a 20 ms time period. The content of the volume hydroxyl groups in the quartz fibers, produced by dispersion in a gas torch, increases with an increase of the specific surface of the specimen. 2024441, IPC CO3 B 33/02, Light-beam cutting and welding of glass in the production of electro-vacuum apparatus, Development and adoption of technological of laser controlled thermo-splitting on the international market, Development and Adoption of New High-Efficiency Methods of High-Precision Processing of Glass Articles, Author’s Abstract of Doctoral’s Thesis, Method, Apparatus, and Article of Manufacture for Determining an amount of Energy needed to Bring a quartz Workpiece to, Technology of laser cutting of silicon plates on crystals of organic light-emitting diodes, Technology of building cells for ultraminiature atomic clocks, Dynamics of seam formation in CO2-laser welding, Evaporation of materials in high-power CO2-laser welding, Development of Theory and a Complex of Technologies and Equipment for Laser Processing of Quartz Glass, Author’s Abstract of Doctoral’s Thesis, Calculations of Thermal Processes in Welding, Method and Apparatus for Fusion Welding Quartz Using Laser Energy, US Patent, Laser micro-welding of silicon and borosilicate glass using nonlinear absorption effect induced by 1558 nm femtosecond fiber laser pulses, Laser micro-welding of transparent materials by a localized heat accumulation effect using a femtosecond fiber laser at 1558 nm, The weld pool oscillations in laser spot welding were investigated experimentally using high speed schlieren photography and probe laser beam reflection technique. In heating process, cracks are prevented when the laser pulse impinges into glass with temperatures higher than the softening temperature of glass. Quartz glass structures can now be built to virtually any size with optically or acoustically clear monolithic joints. Helping the entrepreneurs with prototypes, to the big companies with mass production requests since 2002. In cooling process, shrinkage stress is suppressed to prevent cracks, because the embedded molten pool produced by nonlinear absorption process behaves like an elastic body under the compressive stress field unlike the case of CW-laser welding where the molten pool having a free surface produced by linear absorption process is plastically deformed under the compressive stress field. In this paper, we show that this technique can be extended to semiconductor materials, which are opaque in the above wavelength regions, by demonstrating the welding of silicon and borosilicate glass. Experiments performed over the past year have involved the use of near-diffraction-limited lasers at power levels up to 20 kW for welding applications. Application of laser technology in the production of glass articles, Method of cutting brittle materials, RF Patent No. LaserComb 3D Laser Metal Printing Systems, Fantom G8: Large Format Laser Glass Scribing System. Clever heat management prevents ten-sion and cracks occurring in the mate-rial. Log in, Laser Technology, Trumpf Group, Ditzingen, Germany, Preview: Photonics 4.0 – The Future of Mobility, Unprecedented Success in Global Optoelectronic Market, Berliner Glas Group to Become Part of ASML, XFloater: Opening up Laser Use in the Rear Part of the Eye, Breakthrough in Free Space Optics Powered 5G. Cleantech Technology This has far reaching implications in the design and manufacturing of any device that uses quartz glass … The amplitude of the waves on the melt surface is on the order of 1 mm during the laser pulse. Extra Low Pressure Grinding Consult with us about your manufacturing challenge.
We also use third-party cookies that help us analyze and understand how you use this website. Laser energy of femtosecond pulses absorbed by the nonlinear process is utilized as a heat source for fusion welding of glass. The optical cavity for the lasers used in these tests was an unstable oscillator, producing a near-diffraction-limited output with an obscuration of approximately 50 percent. Millisecond, 3 kW power pulses from a Rofin-Sinar RS3000 CO2 laser were used for spot welding of SS304 stainless steel samples. The concluding chapter discusses applications of laser effects including machining, fabrication, and analytical processes. All rights reserved.
The calculated values agreed well with the experimental melt dimensions in a velocity range of 0.5~200mm/s, when the experimental values of the nonlinear absorptivity and the dimensions of the nonlinear absorption region were used for temperature calculation. Other forms of the LCT method are examined: laser de-faceting, laser parallel thermo-splitting, and application of optical grids and rulings. This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Laser welded glass protective caps for laser light cables are one demonstration of it.
Laser welding supersedes earlier joining methods such as glueing as well as offering a number of advantages: no additional materials are necessary, no evaporation and embrittlement of materials, and greater durability. Laser glass-welding technologies are reviewed. Quartzglass improvement: For removing manufacturing or other defects such as air bubbles, inclusions and internal scratches. (ERB). Access scientific knowledge from anywhere. The micro-welding technique based on the nonlinear absorption via focused femtosecond laser pulses is useful for welding transparent materials without introducing a light-absorbing intermediate layer.
This is a substantially higher power level than used in all previously reported experiments. But opting out of some of these cookies may have an effect on your browsing experience. Space Industry: For structural optical parts, Fiberoptics: For production of continuous fibers. It is shown that a power of 2-4 kW is needed to produce thermally efficient welds in low-thermal-diffusivity plate materials such as 1/2-in stainless steel, and that higher powers are needed for the more highly conducting metals. Welding technologies using continuous wave CO2-laser radiation in the surface-heating regime and in a deep melting regime are presented. The result is that the characteristics of the weld are similar to that of the surrounding monolithic quartz glass. Zero Width Laser Cutting. PlasticWorks Inc. We also welded a non-alkali glass substrate and a silicon substrate using the 1558-nm laser pulses, resulting in a joint strength of 3.74 MPa. Following a brief discussion of the properties of lasers and a description of measuring techniques, the effects of laser radiation are discussed as they relate to absorption at opaque surfaces, laser-induced particle emission, gas breakdown, damage to transparent materials and effects on biological systems.
It is mandatory to procure user consent prior to running these cookies on your website. It was found that for a 3kW 20 ms laser pulse, the frequency of pool oscillations is in the range of 100-300 Hz during the laser pulse.
Quartz glass powder cleaning: The process can be used to clean raw quartz powder to a very high purity by selectively removing impurities with the beam.
Laser Marking & Engraving The manual may also list the recommended OD of glasses to be used. We report on laser micro-welding of materials based on a localized heat accumulation effect using an amplified femtosecond Er-fiber laser with a wavelength of 1558 nm and a repetition rate of 500 kHz. Fiber Laser Technology
This has very important implications for the rectification of expensive otherwise scrap components. This has far reaching implications in the design and manufacturing of any device that uses quartz glass as a fundamental component of its mechanism.
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