"Photon recycling" can enhance cutaneous response to lasers: A pilot human study.
E Victor RossJill RaythenR Rox AndersonPublished in: Lasers in surgery and medicine (2021)
Consistent with a theoretical model and in vitro measurements, this human study confirms that "recycling" reflected laser light can increase skin response. Potentially, the therapeutic response can also be improved with "photon recycling."