| 摘要 |
A high-power laser head has a neodymium-doped glass rod as its active material and a source of light for exciting the glass rod to make it amplify laser radiation at 1.06 microns wavelength. The light source tends to illuminate the outer portions of the rod better than its axial zone thereby exciting the rod un-evenly. However, the outwardly directed light from the light source is collected by a spherical reflector and refocussed on a ruby laser which is aimed along the axial zone of the glass rod to increase its excitation in that zone and provide a more evenly excited glass rod. A mirror is placed between the glass rod and the ruby laser on the axis of the rod. The mirror reflects laser light at 1.06 microns wavelength but allows it to pass at the ruby wave length.
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