Narrow-band laser apparatus

摘要: A narrow-band laser apparatus comprises an optical resonator including first and second reflectors for reflecting radiation, a medium amplifying radiation in said etalon selecting given wavelength component from radiation. polarizing beam splitter is provided linearly also acting as output coupler. In order to obtain very narrow bandwidth of high intensity, Faraday rotator rotating the plane polarization while maintaining linear thereby allowing selection element (such grating) be efficiently employed further laser.