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. Author manuscript; available in PMC: 2016 Dec 1.
Published in final edited form as: J Photochem Photobiol B. 2015 Oct 20;153:344–351. doi: 10.1016/j.jphotobiol.2015.10.015

Table 1.

Photobiomodulation dosimetry parameters.

Parameter Red laser Infrared laser
Center wavelength [nm] 660 780
Spectral bandwidth [nm] 10 10
Operating mode Continuous wave Continuous wave
Average radiant power [mW] 15 70
Effective radiant power [mW] 11.2 53.9
Polarization Random Random
Aperture diameter [cm] 0.23 0.23
Irradiance at aperture [mW/cm2] 375 1750
Beam spot size at target [cm2] 0.04 0.04
Irradiance at target [mW/cm2] 280 1347.5
Exposure duration [s] 20 1.5 (twice)
Radiant exposure [J/cm2] 7.50 2.62
Effective radiant exposure [J/cm2] 5.60 2.02
Radiant energy [J] 0.22 0.08
Number of points irradiated 1 1
Area irradiated [cm2] 0.04 0.04
Application technique Contact Contact
Number and frequency of treatment sessions 1 2
Total radiant energy [J] 0.22 0.16