Patent ID: 9153929
Filing Date: 2015-10-06
Classification: G02B,H01S

Abstract:
1. A laser system, comprising: a length of doped multimode fiber having a first end; a pump source to pump said doped multimode fiber, said pump source arranged for cladding pumping said doped multimode fiber; a first length of single mode fiber; and reflectors disposed to form a laser cavity, said cavity comprising said doped multimode fiber and said first single mode fiber, wherein one end of said first single mode fiber is arranged with respect to said first end of said multimode fiber in such a way that a single mode of said single mode fiber is matched to a fundamental mode of said multimode fiber, wherein an output beam of said laser system is nearly diffraction limited and exits said multimode fiber from a second end of said multimode fiber opposite said first end; and a splice joining said first end of said multimode fiber and said first single mode fiber.