Importance

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Abstract

A laser ignition arrangement for an internal combustion engine, in particular for a gas Otto engine, comprising at least one pump light source (1) and at least one laser resonator (2) which is longitudinally pumped by the pump light source (1) and in particular passively Q-switched, and in particular comprising at least one coupling-in optical means (3) for coupling pump light (4) of the pump light source (1) into the laser resonator (2), wherein preferably at a focus (6) of the coupling-in optical means (3), a first beam diameter (12) of the pump light (4) which is introduced or which is to be introduced into the laser resonator (2), measured at a pump light intensity (I.sub.0,6) of 60% of the maximum pump light intensity (I.sub.max), is at least 80%, preferably at least 85% of a second beam diameter (13), measured at a pump light intensity (I.sub.0,135) of 13.5% of the maximum pump light intensity (I.sub.max).

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First Claim