ABSTRACT
This chapter focuses on the biophysics of lasers and applications for pain relief, reduction of inflammation, energy medicine, and tissue healing. The most significant mechanism responsible for the natural emission and absorption of light occurs when electrons are confined within atoms. Living systems are thought to be governed mainly by electromagnetic interactions, with photons as the interacting particles. High-energy photons from surgical lasers focus and are absorbed in small volumes of living tissue; they have the power to cauterize, coagulate, and destroy tissue, sectioning it with minimal necrosis of the wound edges and with minimal bleeding in the surgical field, even in highly vascular tissue. Photobiology is concerned with the interaction of light with living organisms, from cells to tissues to in vivo live specimens. The chapter also focuses on light absorbed by human tissues and organs for the purpose of healing, but light is also emitted by living cells as biophotons at different wavelengths.
