Lasers can be widened with optics, like curved reflectors. Fiber could potentially distribute an intense source to multiple endpoints, although UVC would require the use of special materials. I’m not an optics specialist either. I don’t know of quantum dots in the UVC range, maybe it hasn’t been done yet. For visible wavelengths they can be pretty bright, so maybe? I don’t think these alternatives exist yet, but so many approaches seem potentially viable that I’m not sure it will take ten years.
Lasers can be widened with optics, like curved reflectors. Fiber could potentially distribute an intense source to multiple endpoints, although UVC would require the use of special materials. I’m not an optics specialist either. I don’t know of quantum dots in the UVC range, maybe it hasn’t been done yet. For visible wavelengths they can be pretty bright, so maybe? I don’t think these alternatives exist yet, but so many approaches seem potentially viable that I’m not sure it will take ten years.