Does it have to be a laser? Why not use monochromatic non coherent light/LED/other types of standard light?
Monochromatic non coherent light, such as light from LED’s is useful for superficial tissues such as wounds. In comparative studies, however, lasers have shown to be more effective than monochromatic non coherent light sources. Non coherent light will not be as effective in deeper areas. LED based systems have gradually improved during the years and are now better documented. Because of lack of scientific support in the past, some manufacturers have quoted laser research as proof of the effectiveness of LED therapy, meaning that they are one and the same. Such argumentation should be a warning lamp to the customer. LEDs can easily be arranged in clusters to cover large areas, while this is quite possible but less common with lasers. Combining LEDs and lasers in the same cluster is sometimes found, but the usefulness has not been documented.
