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UV laser drilling of SiC for semiconductor device fabrication
Apr 19 , 2021
Pulsed UV laser processing is used to drill micro holes in silicon carbide (SiC) wafers supporting AlGaN/GaN transistor structures. Direct laser ablation using nanosecond pulses has been proven to provide an efficient way to create through and blind holes in 400 µm thick SiC. When drilling through, openings in the front pads are formed, while blind holes stop ~40 µm before the backside...
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Method for testing for blind hole formed in wafer layer
Apr 19 , 2021
A new method for detecting blind holes in the contact layer of a multi-chip semiconductor test wafer makes use of the fact that if the hole is not a blind hole, a subsequent etch step extends the hole a predetermined distance into the layer immediately underlying the contact layer. After a predetermined number of holes have been etched through the contact layer and for a predetermined distance int...
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Laser drilling of micro-holes in single crystal silicon, indium phosphide and indium antimonide using a continuous wave (CW) 1070 nm fibre laser
Apr 19 , 2021
The laser micro-drilling of “thru” holes, also known as via holes, in Si, InP and InSb semiconductor wafers was studied using millisecond pulse lengths from an IPG Laser Model YLR-2000 CW multimode 2 kW Ytterbium Fibre Laser and a JK400 (400 W) fibre laser, both with 1070 nm wavelength. The flexibility of this laser wavelength and simple pulsing scheme were demonstrated for semiconduct...
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Small Holes in Silicon Wafer
Apr 19 , 2021
Small Holes in Silicon Wafer: Microholes in silicon wafer substrate. Potomac has the capability to drill holes, channels and pockets in silicon wafers with feature sizes as small as a few microns. Please contact us today to discuss your application.
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532nm laser marker case for drilling tempered glass
Apr 20 , 2021
532nm laser marker case for drilling tempered glass
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Charging head data line laser marking customer orders again 10 sets of S9 UV lasers
Apr 22 , 2021
Charging head data line laser marking customer orders again 10 sets of S9 UV lasers Mr. Zhang, runs a processing enterprise that produces various data lines, with 10,000 square meters of workshops, equipped with advanced production equipment, and can provide one-stop solutions from data line style development, design, production and sales. Since working with RFH for more than three y...
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Customers purchase 5 355nm UV lasers for PCB/FPCB processing
Apr 23 , 2021
Customers purchase 5 355nm UV lasers for PCB/FPCB processing Ultraviolet laser can mark various characters, symbols and patterns on the surface of circuit board PCB/FPCB, and the character size can range from millimeters to micrometers. In addition to effective anti-counterfeiting, it can also realize the control and traceability of product quality. Whether it is fine processing or processi...
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Nanosecond UV laser engraving PCB circuit board QR code will not fade or fall off
Apr 23 , 2021
Nanosecond UV laser engraving PCB circuit board QR code will not fade or fall off Ultraviolet laser can mark various characters, symbols and patterns on the surface of circuit board PCB/FPCB, and the character size can range from millimeters to micrometers. In addition to effective anti-counterfeiting, it can also realize the control and traceability of product quality. Whether it is fine p...
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355nm UV laser etching PCB/FPCB circuit board
Apr 23 , 2021
355nm UV laser etching PCB/FPCB circuit board Ultraviolet laser can mark various characters, symbols and patterns on the surface of circuit board PCB/FPCB, and the character size can range from millimeters to micrometers. In addition to effective anti-counterfeiting, it can also realize the control and traceability of product quality. Whether it is fine processing or processing efficiency, ...
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UV laser is especially suitable for PE film coding, with high light stability
Apr 23 , 2021
UV laser cold light source can avoid thermal deformation of PE film when marking date PE film can be used as the inner layer of food bags, clothing bags, composite bags, and packaging for cosmetics, pickles and pastries. Because PE film is easily deformed by heat, it is necessary to use the ultraviolet laser which is the father of cold processing to mark the bar code or the production date ...
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ABS Plastic Engraving By UV laser
Apr 23 , 2021
ABS Plastic Engraving Plastic Engraving Plastic Engraving ABS plastic has the capabilities to be laser engraved or laser marked using a high contrast laser beam. ABS plastic engraving is ideal for adding numerous types of content to ABS plastic parts and accessories. Non-contact laser marking is very fast as well as abrasion, heat and acid resistant, and many different plastics can be marke...
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How to Engrave on Plastic by 355nm laser
Apr 23 , 2021
How to Engrave on Plastic by 355nm laser Methods of laser marking on plastics Foaming Foaming leaves a tangible mark on the material. It can be seen as laser-induced boiling, which melts the surface. Due to the rapid cooling, bubbles are encapsulated in the material. These bubbles leave a positive mark, which is tangible. The laser works on a low power level and longer pulses. Foaming works on all...
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