Schaeffer Fundamentals of Laser Micromachining

Erscheinungsjahr 2012
ISBN: 978-1-4398-6056-4
Verlag: Taylor & Francis
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 260 Seiten

Due to their flexible and efficient capabilities, lasers are often used over more traditional machining technologies, such as mechanical drilling and chemical etching, in manufacturing a wide variety of products, from medical implants, gyroscopes, and drug delivery catheters to aircraft engines, printed circuit boards, and fuel cells. Fundamentals of Laser Micromachining explains how laser technology is applied to precision micromachining. The book combines background on physics, lasers, optics, and hardware with analysis of markets, materials, and applications. It gives sufficient theoretical background for readers to understand basic concepts while including a further reading appendix for those interested in more detailed theoretical discussions.

After reviewing laser history and technology, the author compares available laser sources, including CO2, excimer, Nd:YAG, fiber, and short pulse. He also addresses topics crucial to obtaining good processing results, such as IR and UV material–photon interaction, basic optical components, and system integration. The text goes on to cover real-world applications in the medical, microelectronics, aerospace, and other fields. It concludes with details on processing many common materials, such as metals, silicon, ceramics, and glasses.

For engineers and project managers, this book provides the foundation to achieve cost-effectiveness, the best edge quality, and the highest resolution in small-scale industrial laser machining. It will help you select the correct kind of laser for your application and identify real opportunities for growth in the marketplace.

Zielgruppe

Researchers and professional courses in materials processing, laser physics and engineering; graduate students in materials processing, laser physics, engineering, MEMS.

Autoren/Hrsg.

Schaeffer, Ronald

Fachgebiete

• Technische Wissenschaften Sonstige Technologien | Angewandte Technik Lasertechnologie, Holographie
• Technische Wissenschaften Technik Allgemein Technische Optik, Lasertechnologie
• Technische Wissenschaften Maschinenbau | Werkstoffkunde Produktionstechnik Fertigungstechnik

Inhaltsverzeichnis

Introduction

Laser Theory and Operation
Brief Review of Laser Physics
CO2 Lasers
Solid-State Nd3+ Lasers
Excimer Lasers
Fiber Lasers
Disk Lasers
Ultrashort Pulse (USP) Lasers
Comparisons of Laser Sources

Optics
Optics
Beam Delivery Systems—Imaging and Focusing
Steps to an Effective Optical Setup

Light–Material Interaction
Photoablation and Material Interaction with UV Light
Thermal Effects
Taper
Fluence

System Integration
Processing System Considerations
General Requirements
Part Viewing Systems
Motion Control
Part Handling
Laser Support Systems
Software
Safety

Discussion of Some Processing Techniques
Aligning to Fiducials
Laser Drilling Large Numbers of Really Small, High-Aspect Ratio Holes
Gas Assist
Micromarking
Patterning Thin Films
Multiple Hole Drilling Using Galvos
In-Volume Selective Laser Etching (ISLE)

Applications
Microelectronics and Semiconductors
Medical Devices
Defense/Aerospace
Renewable Energy
Other

Materials
Metals
Ceramics
Glasses
Silicon and Gallium Arsenide
Polymers
Diamond

Metrology and Cleaning
Metrology
Postlaser Cleaning

Conclusion

Appendix: Additional Reading
Index

Über Autor(innen)

Ronald Schaeffer is the chief executive officer of PhotoMachining, Inc. He earned a PhD in physical chemistry from Lehigh University and has been involved in laser manufacture and materials processing for more than 25 years. He currently writes a column for MICROmanufacturing and is on the editorial advisory board of Industrial Laser Solutions.