Or just optimize the wavelength and put photovoltaics on its path to get more efficient fusion power. Which has been proposed (without the fusion laser part) to

Or just optimize the wavelength and put photovoltaics on its path to get more efficient fusion power. Which has been proposed (without the fusion laser part) to replace RTGs in space: https://en.wikipedia.org/wiki/Optoelectric_nuclear_battery https://en.wikipedia.org/wiki/Optoelectric_nuclear_battery