摘要:
A condensing optical system having a condensed light spot with a small size and a large focal depth without causing a problem of a decrease in intensity of the condensed light spot or discontinuity of an intensity distribution in front and rear areas of a focal position is provided. The condensing optical system that condenses a laser beam generated by a laser source at a predetermined focal length is designed to satisfy Expressions (a) to (d), thereby producing 3rd and 5th spherical aberrations: |Z8|≧0.1λ or |Z15|≧0.05λ, (a) Z8/Z15≧3 or Z8/Z15
摘要:
Ultrashort pulse laser processing bores, welds or cuts objects (work pieces) by converging ultrashort laser pulses by a lens on the objects (work pieces) positioned at the focus and heating small spots or narrow lines on the objects (work pieces). Shortage of a focal depth of the lens prevents the ultrashort pulse laser processing from positioning the object (a work piece) and forming a deep, constant-diameter cylindrical hole. Z-parameter is defined to be Z=2fcΔt/Δi2, where Δt is a FWHM pulse width of the ultrashort pulse laser, Δi is a FWHM beam diameter of the ultrashort pulse, f is a focal length of the lens and c is the light velocity in vacuum. Selection of an optical system including a diffraction-type lens which gives the Z-parameter less than 1 (Z
摘要:
Ultrashort pulse laser processing bores, welds or cuts objects (work pieces) by converging ultrashort laser pulses by a lens on the objects (work pieces) positioned at the focus and heating small spots or narrow lines on the objects (work pieces). Shortage of a focal depth of the lens prevents the ultrashort pulse laser processing from positioning the object (a work piece) and forming a deep, constant-diameter cylindrical hole. Z-parameter is defined to be Z=2fcΔt/Δi2, where Δt is a FWHM pulse width of the ultrashort pulse laser, Δi is a FWHM beam diameter of the ultrashort pulse, f is a focal length of the lens and c is the light velocity in vacuum. Selection of an optical system including a diffraction-type lens which gives the Z-parameter less than 1 (Z
摘要:
A condensing optical system having a condensed light spot with a small size and a large focal depth without causing a problem of a decrease in intensity of the condensed light spot or discontinuity of an intensity distribution in front and rear areas of a focal position is provided. The condensing optical system that condenses a laser beam generated by a laser source at a predetermined focal length is designed to satisfy Expressions (a) to (d), thereby producing 3rd and 5th spherical aberrations: |Z8|≧0.1λ or |Z15|≧0.05λ, (a) Z8/Z15≧3 or Z8/Z15
摘要:
In order to easily control the laser pulse width and perform high-precision processing, the method for processing a material by laser ablation according to the present invention is characterized in that the material having a region of which a double logarithmic chart shows a linearly-shaped line with a gradient of not more than 0.5, when a relationship between laser pulse width and ablation threshold is represented in the logarithmic chart with a laser pulse width in picosecond plotted along the horizontal axis and an ablation threshold in J/cm2 plotted along the vertical axis, is processed by the pulsed laser beam having the laser pulse width within the region.
摘要翻译:为了容易地控制激光脉冲宽度并执行高精度处理,根据本发明的通过激光烧蚀处理材料的方法的特征在于,具有双对数图的区域的材料呈直线状 以激光脉冲宽度和消融阈值之间的关系在对数图中以沿着水平轴绘制的皮秒的激光脉冲宽度表示,并且以纵向绘制的消光阈值(J / cm 2)绘制在不大于0.5的梯度上 由具有该区域内的激光脉冲宽度的脉冲激光束进行处理。
摘要:
The product management system for sputtering targets is configured between a target manufacturer and target customers via a computer network. The customer and the manufacturer share the various information relating to the product management, such as hysteresis information of the backing plates, product information of the sputtering targets, use information of the sputtering targets, or the like with each other.