| 摘要 |
The invention relates to a device for emitting a laser beam, which comprises a cylindrical solid amplifier medium (1), having a fluorescence wavelength .lambda., delimited by a surface .SIGMA. connecting two faces S1 and S2 and intended to be pumped through both the faces, or one of them, in order to become a gain medium. It comprises a cooling fluid (31) of thermal conductivity Cr in contact with the amplifier medium (1) over one of the faces, and an index matching liquid (21) that absorbs or scatters the fluorescence wavelength, of thermal conductivity Ci < 0.3 Cr, in contact with the amplifier medium (1) over its surface .SIGMA..
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