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Table 1 Device specifications.

From: Design and testing of low intensity laser biostimulator

Parameter Value
Beam dimensions (-3dB) D D\\
  3.12 mm 1.7 mm
Average output power 1–20 mW
Average output power density 24–480 mW/cm2
Maximum irradiation per stimulation session 2 Joule
Collimating lens coupling efficiency (685 nm, f = 4.6 mm, NA = 0.53) 96 %
Polarizer transmittance (685 nm, optic axis parallel to the diode junction) 75 %
Quarter-wave retarder transmittance, (685 nm) 93 %
Total optical system transmittance (685 nm) 67 %
Output polarization linear/circular
Laser class IIIb
Pulse modulation 0–10 000 Hz
Duty factor 10–90 %
Pulse sequence duration 1–30 sec
Pulse sequence repetition period 1–5 min
Number of pulse sequences 1–20
Maximum power consumption (5 V) 600 mW