Abstract
We report on a monolithic resonator single-crystal Nd:YAG fiber laser. The laser resonator structure is simply formed by the fiber waveguide and the polished and coated fiber endfaces. The fiber oscillator is 6.5 mm long with a mean diameter of 47 μm. The lowest-order spatial mode for such a fiber has a beam waist of 15 μm, implying a Rayleigh length in YAG of 1.2 mm. The fiber laser is thus ~5-R lengths long and may be considered a guided-wave device.
© 1986 Optical Society of America
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