Page 6 - LFWC_JulAug_2019_eMag

CONTENTS Jul/ Aug 2019 Issue 4

23 COVER STORY
Femtosecond Lasers
From inception to industrial applications
The commercialization of femtosecond lasers in various markets ranging from medical to
automotive is a constant driver for the engineering of reliable and innovative products. The use
of femtosecond pulsed lasers in manufacturing will continue to evolve and expand.

TECHNOLOGIES CENTER
26 Lasers Ignition
a) 二极管 发动机
激光器 激光火花塞 气缸 Laser ignition quantitatively improves performance
光纤
1 1 1 发动机
1
电火花塞 of gasoline engines
电源 2 2 2 2 单元 4
电流控制 3 Researchers have achieved advances in their design and
MARKET WATCH 和热稳定 3 3 3 3 1 2 quantifiable demonstration of an laser ignition system using
按照地域划分的激光打标市场(单位: 10亿美元) 4 4 4 4 b) 激光火花塞 水冷管道 fiber-coupled, compact Nd:YAG/Cr4+:YAG laser spark plugs.
10 Laser Marking Market worth $3.0 billion by
发动机
3.0
电子控制
电子控制单元/
2024
2.1 激光接口 单元 28 Additive Manufacturing
The overall laser marking market is expected to grow futureAM project discovers superalloys for
from USD 2.1 billion in 2018 to USD 3.0 billion by additive manufacturing
2024, at a CAGR of 6.0%. A team of engineers has been refining laser powder
2018 2019-e 2020 2021 2022 2023 2024-p buildup welding over decades to allow more materials
APAC Europe North America RoW
to be applied in additive manufacturing.
12 Photonics Market worth $780.4 billion by
2023 29 Laser Welding
Photonics Market is projected to grow from USD NIST research to improve viability and
520.0 billion in 2017 to USD 780.4 billion by 2023, marketability of laser welding
at a CAGR of 7.0 % during the forecast period. A better understanding of the interaction between
laser and metal will give industry more control over
laser welding.
数值孔径NA的定义
APPLICATIONS 二极管 32 输出光 Optical Components
激光
14 Laser Micro Processing NA = sin(θ) Economical, High Performance Fast Axis
准直透镜
Ultrafast lasers hit the spot in medical 增大NA的两种方法 Collimators for High Power Blue Laser Diodes
a)
device manufacturing FAC, which is made from FISBA "blue", provides an
Ultrashort pulsed laser achieves precise cold ablation unparalleled cost and performance advantage for
增加透镜的折射率，增大NA current power blue-light single-emitter lasers.
processing of metal, glass and polymer materials, 光频调制啁啾激光输出 (FMCW) 激光雷达脉冲的
往返时间
which provides an innovative solution for more precise 光频率 啁啾 34 Lasers for Lidar
and more complex medical device manufacturing.
b) 时间 FMCW lidar: An alternative for self-driving cars
18 Laser Welding 激光雷达光束扫描物体， 光束扫描 物体 Frequency-modulated coherent lidar promises to
在透镜上增加第二个表面的曲率，增大NA
光被反射
仅在激光
Innovative laser welding promotes electric FMCW 输出 雷达光束扫描 collect more of the data computers need to drive
激光
物体时返回
vehicle production 雷达 接收器 cars—the challenge is to bring down costs and
本地振荡器 improve performance.
CleanWeld welding technology can accurately
将返回信号 + 多普勒
manage the application of laser power in specific 与本地振荡 返回信号 频移
器混合
situations, maximize the controllability and stability
of welding process, and achieve consistent excellent 38 BUSINESS FORUM
welding effect. Gender equity in photonics pays off 普雷茨特天猫旗舰店配件产品火热促销中
打开淘宝扫一扫立享优惠！
20 Additive Manufacturing We must convince people that correcting salary
完工 inequality is not altruism, it makes business sense.
Optimized additive manufacturing for
µm 148
60 400
30 lightweight metallic components
0 6 EDITOR’S NOTES
AlSi10Mg -30 50 µm
Recycled aluminum powder enables optimized
-50
µm 8 LEADING EDGE SNAPSHOTS
60 189 manufacturing process of lightweight metal parts
30 40 PRODUCTS HIGHLIGHTS
0 and provide efficient, customized and cost-effective
-30 356 50 µm
喷丸处理 -50
production process of high-quality products. 44 AD INDEX
显微硬度 (HV) 残余应力 (MPa)
170 50
完工
160 0 欢迎莅临普雷茨特工博会展台
150 About Laser Focus World China
喷丸处理 -50
140 Published since 2005, Laser Focus World China, the Chinese editionof the world famous Laser Focus World magazine, is the professional
-100 展台: 4.1H-C151
130 magazine for engineers, researchers, scientists, and technical professionalsin China. It provides comprehensive global coverage of optoelectronictechnologies, industrial and R&D applications, and market information. The
喷丸处理
As-built
120 -150 editorial content licensed exclusively from Laser Focus World magazine is supplement by content generated by our own editors in China. 2019.9.17-9.21
110 -200
300
0 100 200 300 400 500 600 100 200 Laser Focus World China is published every other month in simplified Chinese and distributed to over 9,500 qualified optoelectronics professionals in China. Through our digital magazine and website we provide
400
距表面的深度 (µm) 距表面的深度 (µm)
coverage to an even larger audience base. Please visit our relevant website, www.laserfocusworld.com.cn.
Laser Focus World China, ISSN 1817-6917 is published bi-monthly by ACT International, Unit B, 13/F, Por Yen Building, No. 478 Castle Peak Road, Cheung Sha Wan, Kowloon, Hong Kong, under the license of PennWell
Corporation, 1421 S. Sheridan Road, Tulsa, OK 74112. Copyright 2010. All rights reserved. This publication contains article reprinted from Laser Focus World magazine. Laser Focus World is exclusively owned and
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