We study the parametric amplification of electromagnetically induced transparency-assisted Rydberg six- and eight-wave mixing signals through a cascaded nonlinear optical process in a hot rubidium atomic ensemble both theoretically and experimentally. The
Single-frequency 1319-nm laser was obtained by using a laser-diode-pumped monolithic Nd:YAG crystal with a non-planar ring oscillator (NPRO). When the NPRO laser was pumped by an 800-μm fiber coupled laser diode, the output power of the single-frequency 1
Photodynamic therapy (PDT) of cancer is a two-step drug-device combination modality, which involves the topical or systemic administration of a photosensitizer followed by light illumination of cancer site. In the presence of oxygen molecules, the light i