The influence of the pulse length on the drilling of metals with an excimer laser

2004 ◽  
Vol 16 (2) ◽  
pp. 85-91 ◽  
Author(s):  
Aart Schoonderbeek ◽  
Cornelis A. Biesheuvel ◽  
Ramon M. Hofstra ◽  
Klaus-J. Boller ◽  
Johan Meijer
Keyword(s):  
Excimer Laser ◽  
Pulse Length

Pulse stretcher with variable pulse length for excimer laser applications

2010 ◽  
Vol 81 (3) ◽  
pp. 033104 ◽  
Author(s):  
A. Burkert ◽  
J. Bergmann ◽  
W. Triebel ◽  
U. Natura
Keyword(s):  
Excimer Laser ◽  
Pulse Length ◽  
Laser Applications

Excimer Laser Liftoff of Epitaxial Pb(Zr,Ti)O3 Thin Films and Heterostructures

1999 ◽  
Vol 596 ◽  
Author(s):  
L. Tsakalakos ◽  
T. Sands
Keyword(s):  
Thin Films ◽  
Excimer Laser ◽  
Short Pulse ◽  
Pulse Length ◽  
Transient Liquid Phase ◽  
Film Stress ◽  
Growth Substrate ◽  
Localized Heating ◽  
Krf Excimer Laser ◽  
Local Relaxation

AbstractEpitaxial (100) and (111)-oriented Pb(Zr,Ti)O3-based thin films and heterostructures have been transferred intact from their sapphire and MgO growth substrates to silicon and polymer substrates utilizing a novel laser liftoff process. The heterostructures, while on their growth substrate, were bonded to the receptor substrates using one of several bonding methods, including van der Waals bonding to an elastomer receptor, and transient liquid-phase Pd-In bonding to Si. A single 38 ns pulse from a KrF excimer laser (<,= 248 nm) directed through the transparent growth substrate induced localized heating of the perovskite interfacial layer. At fluences corresponding to the onset of vaporization (>300 mJ/cm2), the sapphire or MgO substrate was detached. Because of the short pulse length and the low thermal conductivity of Pb-based perovskite phases, heating of the top surface of the heterostructure was minimal, thus permitting film transfer to thermally-sensitive receptor substrates. X-ray rocking curves revealed slight broadening of the principal PLZT diffraction peaks (∼10–20%), suggesting local relaxation of film stress.

Coronary Intervention with the Excimer Laser: Review of the Technology and Outcome Data

2016 ◽  
Vol 11 (1) ◽  
pp. 27
Author(s):  
John Rawlins ◽  
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◽  
◽  
◽  
...  
Keyword(s):  
Excimer Laser ◽  
Coronary Intervention ◽  
Outcome Data ◽  
Boston Scientific ◽  
Technical Aspects ◽  
Safety And Efficacy ◽  
Percutaneous Coronary ◽  
Short Period ◽  
Complex Lesions

Excimer laser coronary atherectomy (ELCA) is a long-established adjunctive therapy that can be applied during percutaneous coronary intervention (PCI). Technical aspects have evolved and there is an established safety and efficacy record across a number of clinical indications in contemporary interventional practice where complex lesions are routinely encountered. The role of ELCA during PCI for thrombus, non-crossable or non-expandable lesions, chronic occlusions and stent under-expansion are discussed in this review. The key advantage of ELCA over alternative atherectomy interventions is delivery on a standard 0.014-inch guidewire. Additionally, the technique can be mastered by any operator after a short period of training. The major limitation is presence of heavy calcification although when rotational atherectomy (RA) is required but cannot be applied due to inability to deliver the dedicated RotaWire™ (Boston Scientific), ELCA can create an upstream channel to permit RotaWire passage and complete the case with RA – the RASER technique.

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