A solar-pumped laser device includes: a light-guiding plate configured such that a fluorescence substance absorbing solar light and emitting fluorescence including a predetermined wavelength is dispersed in the light-guiding plate so as to bring the fluorescence to exit a predetermined surface; and an optical fiber disposed close to the predetermined surface, the optical fiber including: a core part in which a medium excitable by the fluorescence so as to emit a laser is dispersed; and a clad part that is formed by a material through which the fluorescence passes, is disposed around the core part, and has a smaller refractive index than a refractive index of the core part, wherein a light emitted by the medium is totally reflected by one end surface of the optical fiber, and is brought to pass through the other end surface of the optical fiber.
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