Fluorescence guide plate, and solar-pumped laser

A fluorescence guide plate comprising:

• a first surface;
• a second surface;
• an edge surface that connects a periphery of the first surface with a periphery of the second surface;
• and
• a dichroic mirror laminated on the first surface, wherein:
• fluorescent material that absorbs irradiation light applied to the first surface to emit fluorescence is dispersed at least one of inside a space defined by the first surface, the second surface, and the edge surface, on the first surface, or on the second surface;
• the fluorescence guide plate has a plate-shaped structure made of a material with a higher refractive index than an outside of the fluorescence guide plate;
• the fluorescence guide plate is configured such that, when the irradiation light enters from the first surface, the fluorescence emitted from the fluorescent material exits from the edge surface;
• and
• a reflection wavelength band of a normal incident beam reflected by the dichroic mirror lies in a range of wavelengths longer than a peak wavelength of a fluorescence wavelength band of the fluorescent material.