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Frontiers of Optoelectronics

ISSN 2095-2759

ISSN 2095-2767(Online)

CN 10-1029/TN

Postal Subscription Code 80-976

Front Optoelec Chin    2011, Vol. 4 Issue (4) : 393-397    https://doi.org/10.1007/s12200-011-0214-1
RESEARCH ARTICLE
Beam quality measurement and consistent safety standard for high power laser products
Hong CHEN(), Zhibin YIN, Xubao WANG, Tiechuan ZUO
Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
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Abstract

With the development of laser technology, laser application technology increasingly plays a leading role in the field of industry. High power laser products and their safety requirements are attracting more attention. In laser industrial applications, laser beam quality and the system of laser beam propagation and focusing are greatly ignored. Furthermore, the basic safety standards for laser products have been neither widely publicized nor strictly enforced because of rapid development. This paper examines the underlying relationship between laser beam quality and laser manufacturing, and makes a comparison among different laser systems. It is also shown how the laser safety standards could be better understood and laser beam quality standard is advocated that directly relates to a mission requirement.

Keywords beam quality      safety standards      laser products     
Corresponding Author(s): CHEN Hong,Email:chenhong@bjut.edu.cn   
Issue Date: 05 December 2011
 Cite this article:   
Hong CHEN,Zhibin YIN,Xubao WANG, et al. Beam quality measurement and consistent safety standard for high power laser products[J]. Front Optoelec Chin, 2011, 4(4): 393-397.
 URL:  
https://academic.hep.com.cn/foe/EN/10.1007/s12200-011-0214-1
https://academic.hep.com.cn/foe/EN/Y2011/V4/I4/393
Fig.1  Sketch of flying optics system
positionIIIIII
beam radius/mm9.4079.7410.34
density distribution
Tab.1  Propagation properties of the slab CO laser beam after flying optic system
positionIIIIII
beam radius/mm6.929.0211.33
density distribution
Tab.2  Propagation properties of the TLF6000t CO laser beam after flying optic system
Fig.8  Focus of an arbitrary laser beam
lasersDC035 Slab CO2 laserTLF6000t CO2 laserCW025 YAG laser
Kf /(mm·mrad)3.868.6725
f/mm300200300200200
wf /mm0.130.090.430.220.29
zRf4.682.121.79.633.27
simulation
Tab.3  Beam focusing ability with different focal lengths and different laser beam quality
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