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Optics & Photonics Talk

1550 nm Laser Safety for "eyesafe lasers"...
Author Last Post
You analysis looks OK.

Our laser safety office uses ANSI software to do these calculations.


Robert F. Cartland
2009 - 2010 President
Optical Society of Southern California
Since I cannot delete this question, I will at least provide the numbers that I got from ANSI Z.136.1-2000. The newer standard is more difficult to read, but appears to give the same result. Feel free to delete or correct.

Based upon the Old ANSI Z136.1-2000 standard, the class 1 limit for 1550 nm is 9.6 mW. This is given in table 1 on page 41 of that standard.

AEL for Class 1 laser = MPE * Aperture
MPE @1550 = 0.1W/cm2
Limiting Aperture = 3.5 mm diameter; area = .096
AEL = .096 cm2*.1W/cm2 = 9.6 mW
Has anyone performed the AEL or class 1 maximum power limit analysis for 1550 nm lasers? If so, what is the limit for 1550 nm? What standard did you follow?
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Updated: 20 October 2019
Added 13  November OSSC Meeting