PRISMA, AND UNIDIRECTIONAL, SINGLE-FREQUENCY COMPACT LASER WITH FLAT GEOMETRY CAVITY IN RING WITHOUT ELEMENTS INTRACAVITY

摘要

prism, and unidirectional, single frequency compact laser with flat ring geometry with no intracavity elements. according to the present invention there is described a compact ring-shaped geometric optical cavity laser which produces unidirectional laser oscillation without recourse to the use of intracavity elements and may also operate in a single frequency regime. a special prism is used as the output mirror and the internal reflection properties in this prism are used to select one of two possible oscillation directions of the ring cavity. the compact design, without intracavity elements to force unidirectional oscillation, allows higher output powers to be obtained. stable operation in a single frequency regime is obtained by combining the use of selective elements in frequency,