Abstract

Laser spark ignition of reactive gases was first attempted in 1969; one decade later first engine tests were achieved. Several concepts for an ignition scheme including fiber transportation of ns pulses were pursued successfully. A number of different prototypes, mostly Nd:YAG lasers, transversally or longitudinally, directly or fiber-transmission pumped were developed. Studies have shown that the problem of window failing can be avoided. The temperature management for the solid-state as well as for the diode lasers still represent major problems in laser ignition of car engines to date. Laser ignition in rocketry is an upcoming new field of development.

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