Shows how excimer & Impact lasers can be used to strip polymer insulation from wires & contact pads. Explains why 2-sided stripping can work on thin enough wires & gives examples of 2 & 3 way strippers, with machines & applications. RAE14 – Excimer Laser Stripping of Insulation(wires & pads)
Read MoreTechnote “Excimer” #13: Beam Delivery for Pulsed Laser Deposition
Examines a typical PLD set-up & the resulting highly non-uniform beam spot. Shows how Optec beam shaping modules & other BDU components can be used to generate uniform intensity & structured spots with high efficiency. RAE13 – Beam Delivery for Pulsed Laser Deposition
Read MoreTechnote “Excimer” #12: Optics Lifetime Effects in Excimer Systems
Examines what limits the lifetime of the UVFS & CaF2 optics used for excimer lasers, looking at bulk effects , surface effect including AT coatings, and contamination. Gives a guide to expected lifetime & examines how optics can be protected. RAE12 – Lifetime of Optics in Excimer Laser Systems
Read MoreTechnote “Excimer” #11: Short History of Small Optec Excimer Machines
Reviews the development of small excimer-based machines over the past 30 years from LightDeck to MicroMaster V1-V6, Promaster, LB Systems, MicroMaster V7, Lightshot V3 & ‘minimal’ LB Smart systems, built in many variants. RAE11 – Short History of Small Optec Machines
Read MoreTechnote “Excimer” #10: Micro-machining of Polymers Using Lasers
Covers micromachining of polymers to µm scale resolution using mostly excimer lasers, giving many examples of drilling, grooving & milling. Also gives some examples of drilling of hard materials & processing using Impact CO2 TEA lasers. RAE10 – Micro-Machining of Polymers Using Lasers
Read MoreTechnote “Excimer” #9: How to Use Diffusers for beam Homogenization
Explains how interference effects using microlens arrays for beam homogenization can be avoided by using aperiodic Engineered Diffusers, which unlike classical Lambertian diffusers can produce a specific angular distribution profile. RAE09 – Using Diffusers for Beam Homogenization
Read MoreTechnote “Excimer” #8: CO2 TEA Impact Laser Processing
Explains the physics & pros & cons of using Impact CO2 TEA lasers as an alternative to excimers. RAE08 – CO2 TEA Impact Laser Processing
Read MoreTechnote “Excimer” #7: Design Rules for Array Type Homogenizers
Deals with the design of integrating type beam homogenizers based on microlens arrays, covering single or double arrays, the use of a field lens, numerical aperture & telecentricity. RA_E_07 – Design Rules for Array Type Homogenizers
Read MoreTechnote “Excimer” #6: Mask Options in Excimer laser micromachining
Deals with the range of masks used in projection systems, including simple motifs, motif sectectors, dynamic masks, complex masks for parallel processing, mask scanning & OCM, rotating masks & M/FS & grey scale masks. RA_E_06 – mask options for excimer laser micromachining
Read MoreTechnote “Excimer” #5: Excimer Laser Micromachiner’s Optics Primer
Attemps to cram optical theory into 4 pages, dealing with what limits resolution, DOF etc.; specifically aimed at excimer laser micromachining but relevant to other situations, includes handy formulae. RA_E_05 – Excimer Laser Micromachiner’s Optics Primer
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