| 摘要 |
<p>A laser beam generator which includes an excitation light source (1) for generating a plurality of excitation optical beams, a laser medium (7) for generating at least two laser beams in response to irradiation with a plurality of excitation optical beams in different positions, reflection means (8) for reflecting part of the laser beams generated by the laser medium (7), constituting a laser resonator (5) in cooperation with heat lenses (7a) -(7d) formed inside the laser medium (7), and phase compensation means (9) for compensating for the phases of the laser beams outputted from the laser resonator (5). This generator can generate a laser beam having a small angle of divergence and a high energy density. The laser beam can be subjected to tracking control by changing the phase compensation quantity. <IMAGE></p> |
