| http://www.w3.org/ns/prov#value | - the returned branches in the acousto-optical modulator, the most varied of solutions are conceivable. [0134] One possibility provides for the returned branches to be aligned in the acousto-optical modulator such that one of the resulting radiation fields, preferably the first radiation field, can be coupled into the laser-active medium. [0135] The first radiation field preferably propagates in the
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