CO2 Laser - Optimisation and Application

446 Pages·2012·30.743 MB·English

by  D. Dumitras

CO LASER –
2
OPTIMISATION AND
APPLICATION

Edited by Dan C. Dumitras
CO Laser – Optimisation and Application
2
Edited by Dan C. Dumitras

Published by InTech
Janeza Trdine 9, 51000 Rijeka, Croatia

Copyright © 2012 InTech
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Publishing Process Manager Maja Bozicevic
Technical Editor Teodora Smiljanic
Cover Designer InTech Design Team

First published March, 2012
Printed in Croatia

A free online edition of this book is available at www.intechopen.com
Additional hard copies can be obtained from [email protected]

CO Laser – Optimisation and Application, Edited by Dan C. Dumitras
2
p. cm.
ISBN 978-953-51-0351-6

Contents

Preface IX
Part 1 Basic Processes 1
Chapter 1 CO Laser Photoacoustic Spectroscopy:
2
I. Principles 3
Dan C. Dumitras, Ana Maria Bratu and Cristina Popa
Chapter 2 CO Laser Photoacoustic Spectroscopy:
2
II. Instrumentation and Applications 43
Dan C. Dumitras, Ana Maria Bratu and Cristina Popa
Chapter 3 CO Lasing on Non-Traditional Bands 103
2
Vladimir Petukhov and Vadim Gorobets
Part 2 New Systems 137
Chapter 4 Ultrashort Pulses 139
Mikhail N. Polyanskiy and Marcus Babzien
Chapter 5 High Average Power Pulsed CO Laser
2
for Short Wavelength Light Sources 163
Akira Endo
Chapter 6 Diffusion Cooled V-Fold CO Laser 179
2
Rakesh Kumar Soni
Chapter 7 Heterodyne Interferometer for Measurement
of Electron Density in High-Pressure Plasmas 209
Keiichiro Urabe and Kunihide Tachibana
Chapter 8 Transmission of CO Laser Radiation Through
2
Glass Hollow Core Microstructured Fibers 227
A. D. Pryamikov, A. F. Kosolapov,
V. G. Plotnichenko and E. M. Dianov
VI Contents

Part 3 Material Processing 249
Chapter 9 Application of Laser-Burnishing Treatment
for Improvement of Surface Layer Properties 251
Joanna Radziejewska
Chapter 10 Covering with Carbon Black and Thermal Treatment by
CO Laser Surfaces of AISI 4340 Steel 275
2
G. Vasconcelos, D. C. Chagas and A. N. Dias
Chapter 11 Welding of Thin Light Alloys Sheets
by CO Laser Beam: Magnesium Alloys 283
2
Afia Kouadri-David
Chapter 12 CO2 Laser and Micro-Fluidics 307
Mohammadreza Riahi
Chapter 13 Infrared Lasers in Nanoscale Science 325
Rui F. M. Lobo
Part 4 Medical Applications 355
Chapter 14 Clinical Application of CO Laser 357
2
Hyeong-Seok Oh and Jin-Sung Kim
Chapter 15 CO2 Laser: Evidence Based Applications in Dentistry 379
Pinalben Viraparia, Joel M. White and Ram M. Vaderhobli
Chapter 16 Non-Thermal, Non-Ablative CO Laser Therapy (NACLT):
2
A New Approach to Relieve Pain
in Some Painful Oral Diseases 387
Nasrin Zand
Chapter 17 Protons Acceleration by CO Laser Pulses
2
and Perspectives for Medical Applications 415
Pasquale Londrillo, Graziano Servizi, Andrea Sgattoni,
Stefano Sinigardi, Marco Sumini and Giorgio Turchetti

Preface

The molecular carbon dioxide laser was invented in 1964 by C. K. N. Patel at Bell Labs.
Immediately, it proved to be a high-power, continuous wave (CW) laser and a
relatively high-efficiency gas laser (20-25% conversion of electrical energy into laser
radiation), both in CW or pulsed operation. As a matter of fact, the CO2 lasers are the
highest-power CW lasers (more than 100 kW) and one of the highest-energy pulsed
gas laser (100 kJ) that are currently available. It demonstrated the utility in different
device concepts and found a wide range of applications, from basic sciences till
material processing and medicine, because it has a well established technology, it is
versatile, simple to operate and relatively cheap on investment and maintenance.
The present book includes several contributions aiming a deeper understanding of the
basic processes in the operation of CO2 lasers (lasing on non-traditional bands,
frequency stabilization, photoacoustic spectroscopy) and achievement of new systems
(CO2 lasers generating ultrashort pulses or high average power, lasers based on
diffusion cooled V-fold geometry, transmission of IR radiation through hollow core
microstructured fibers). The second part of the book is dedicated to applications in
material processing (heat treatment, welding, synthesis of new materials, micro
fluidics) and in medicine (clinical applications, dentistry, non-ablative therapy,
acceleration of protons for cancer treatment).
The editor would like to thank all the chapter authors for their effort in completion of
this book.

Dan C. Dumitras
National Institute for Laser, Plasma and Radiation Physics (INFLPR)
Romania