Page 6 - LFWC_MarApr_2019_eMag

CONTENTS Mar/ Apr 2019 Issue 2

28 COVER STORY
High-Power Diode Lasers
High-power diode lasers focus on improved
utility
Recent advances in diode packaging and implementation are transforming the utility
and economics of applications for high-power diode lasers.
a) y 电流流向
x
z L 后面
近场 ≥ 95%
w
远场 n面 衬底
p面
接触层
电气隔离
前面 ≈ 0 ... 10% TECHNOLOGIES CENTER
w 95%
θ 95% 模式轮廓
激活区
波导 Diode lasers
包层 30
b) Research gives high-power diode lasers new
12 MARKET WATCH capabilities
Value of the biometric hardware per high-end smartphone R&D at Berlin Adlershof has resulted in design
Predominant $20 Biometric Security
technology 2023 improvements for high-power diode lasers that are
The second wave of consumer biometrics is boosting efficiency, peak power, brilliance, and range
$15 $+18B? reshaping the VCSEL industry of emission spectra.
2018 Consumer biometric
market value
Fingerprint identification technology still dominates
$5 the biometric market, but big changes have come 34 Drive Circuit
2013 $5.3B
with 3D facial recognition and other photonics-based
Consumer biometric Analyzing the APC driving circuit of
$3.5B market value
$0 Consumer biometric 2018 security applications. semiconductor laser diode
0101
2008 2018 market value
The APC driver circuit can realize the self-adjusting
when the external factors change and keep the
0101
Access Fingerprint 2D/3D face Iris Voice optical power relatively stable. It can also actively
code authentication authentication authentication authentication
APPLICATIONS adjust the value of adjustable resistance to achieve
the change of optical power to meet the different
16 Laser Cleaning optical power requirements for customers.
Applications for laser cleaning
From manufacturing plants and medical labs to the 36 PHOTONICS PRODUCTS
automotive, aviation, and steel fabrication industries,
the laser is becoming the most preferred method for Lidar Systems
surface cleaning of materials. Automotive lidar draws heavily on
photonics industry
The popularity of autonomous vehicles led to the rapid
22 Composite Processing development of lidar market, and the development of
Research team to develop laser processing lidar also brought benefits to photonics industry.
methods for multifunctional composites
A team of researchers at the Fraunhofer Institute for 46 BUSINESS FORUM
Laser Technology is studying and developing laser
processing methods for economical joining, cutting, High-power laser diodes, niche by nature
ablation, and drilling of composite materials. ——an interview with Mark McElhinney
24 Process Control
CLAMIR precisely controls advanced laser
a)
manufacturing processes
A high-speed mid-infrared camera and software 6 EDITOR’S NOTES
system monitors melt pools more accurately than 8 LEADING EDGE SNAPSHOTS
visible CMOS cameras.
b) 48 PRODUCTS HIGHLIGHTS
52 AD INDEX
About Laser Focus World China
Published since 2005, Laser Focus World China, the Chinese editionof the world famous Laser Focus World magazine, is the professional
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
editorial content licensed exclusively from Laser Focus World magazine is supplement by content generated by our own editors in China.
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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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