Stabilisation of the Repetition Rate of a Passively Q-switched Laser By Means of Coupled Resonators
The invention relates to a Q-switched laser comprising a pump light source (1), an optical resonator, in which a laser medium (6) is situated and a passive Q-switch (5). The aim of the invention is to provide an improved Q-switched laser which has a simple, compact construction with a repetition rate that has at the same time the smallest possible degree of time jitter. To achieve this, according to the invention, part of the light that is decoupled from the optical resonator is fed to an optical delay line (9) by means of a beam splitter (8) and is re-coupled to the optical resonator once it has passed through said optical delay line (9). The optical resonator has a decoupling mirror (4) and the coupled resonator can contain a dichroic beam splitter (7) and a polarisation beam splitter (8).
TUENNERMANN ANDREAS [DE]; NODOP DIRK [DE]; STEINMETZ ALEXANDER [DE]; LIMPERT JENS [DE]
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