For military lasers, and in fact for every laser that is used outdoors, the Nominal Ocular Hazard Distance (NOHD) is an important parameter in hazard control. The NOHD depends on beam parameters such as beam waist location and diameter, beam divergence and beam profile. This paper describes practical experiences obtained with several techniques for beam profiling and divergence measurement.
REFERENCES
1.
IEC TR 60825-10
Safety of laser products - Part 10: Application guidelines and explanatory notes to IEC 60825-1.
Dated: February 2002
.2.
NEN-EN-IEC 60825-1
Safety Of Laser Products - Part 1: Equipment Classification and Requirements (IEC 60825-1:2014)
. Dated: August 2014
3.
ISO 11146-1
Lasers and laser-related equipment – Test methods for laser beam widths, divergence angles and beam propagation ratios-Part 1: Stigmatic and simple astigmatic beams.
Dated: 2005
. Here, the focal plane method showed both its strength and its weakness: it was the only method that produced5.
User_Manual_BP1xx.pdf, Version 2.5, Date November,
2009
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