Research of loss detection of optic path for laser ignition application

We present some different kinds of the loss detection technologies of optic path for laser ignition application according to the recommend of reliability and security of the laser ignition system, such as single wavelength and dual wavelength. The factors of loss detection technology are discussed. The difficulty and uptrend of the laser ignition system are pointed out in this paper. The correlation research will be focused on the reliability of optic parts, applicability of environment and special fiber in the future.