A portable sanitization system (200) may comprise: a portable device (210); a light source disposed in the portable device (210), the light source configured to emit a light having a wavelength between 414 and 474 nm; a light converter (230) comprising a nonlinear crystal configured for frequency doubling; and a light guide (220) extending from the light source to the light converter (230), the light converter (230) disposed proximal a tip of the light guide.