Patent ID: 6014388
Filing Date: 2000-01-11
Classification: G02F,H01S

Abstract:
An apparatus for producing a short wavelength laser of high amplitude comprising:a laser light source producing a fundamental wave, said fundamental wave having a long wave length;a wavelength converter which converts the fundamental wave to a second harmonic of the fundamental wave, said second harmonic having a short wavelength and low amplitude; anda semiconductor laser light amplifier having a gain at a wavelength corresponding to the second harmonic, end faces of the light amplifier being provided with an antireflection coating layer, for amplifying the second harmonic to produce the short wavelength laser of high amplitudewherein the light amplifier is provided with antireflection coating on both light incident end face through which the second harmonic enters the amplifier and light emanating end face from which the short wavelength of high amplitude emanates.