Yes, multiple researchers throughout the world are finding therapeutic application of different infrared wavelengths as well as other visible light wavelengths such as red, green, and blue frequencies and their effects on tissues. Advances in laser application and delivery include variations in modulation or frequency and intensity as well as different treatment wavelengths.

These variations in laser delivery produce different effects on tissues resulting in shorter treatment times and better treatment outcomes. There are limitations in low-level laser therapy because of dramatic absorption of infrared in the subcutaneous tissues. It is difficult for lasers under 200 milliwatts to penetrate beyond a few centimeters. The K-Laser Class IV therapy laser is the front-runner in high-power laser therapy systems and will continue to improve as new applications develop.