Technical Parameters for Laser Acupuncture to Elicit Peripheral and Central Effects: State-of-the-Art and Short Guidelines Based on Results from the Medical University of Graz, the German Academy of Acupuncture, and the Scientific Literature

Figure 2

Violet laser stimulation with very low output power (1 mW). The beam area was about 0.5 cm², resulting in a power density of about 2 mW/cm² [8].