Laser device for firing fuel mixture in cylinder of combustion engine, has active laser medium having coupling surface that controls outflow of radiation to guard element through output surface

摘要

The laser device has active laser medium (14) and light guard element (16) for coupling of radiation (18) emitted by active laser medium with a coupling surface (44) of the active laser medium. The coupling surface controls the outflow of radiation to 0-56% to guard element through output surface (42).