Patent ID: 6370168
Filing Date: 2002-04-09
Classification: H01S

Abstract:
A laser, comprising:an OPS-structure including a multilayer gain-structure surmounting a multilayer mirror-structure, said gain-structure including a plurality of active layers spaced apart by spacer layers; a straight laser-resonator having a resonator axis, said laser-resonator formed between said mirror structure of said OPS structure and a mirror spaced apart from said gain-structure; a pump-light source arranged to deliver pump-radiation to said gain-structure for generating laser-radiation in said laser-resonator; a transmissive wavelength-selective element located in said laser-resonator for selecting a frequency of said laser-radiation within a gain bandwidth characteristic of the composition of said gain-structure; an optically-nonlinear crystal located in said laser-resonator between said transmissive wavelength-selective element and said gain-structure and arranged to double said selected frequency of laser-radiation, thereby providing frequency-doubled radiation; and first and second dichroic filters, said first dichroic filter disposed between said gain-structure and said optically-nonlinear crystal at normal incidence to said resonator axis and arranged to reflect frequency-doubled radiation incident thereon and direct said frequency-doubled radiation away from said gain structure, through said optically nonlinear crystal toward said second dichroic filter, said second dichroic filter being located between said transmissive wavelength-selective element and said optically-nonlinear crystal and being inclined at an angle to said resonator axis and arranged to reflect frequency-doubled radiation out of said laser-resonator as output radiation.