| 摘要 |
In various embodiments, wavelength beam combining (WBC) laser systems incorporate optical cross-coupling mitigation systems and/or engineered partially reflective output couplers in order to reduce or substantially eliminate unwanted back-reflection of stray light. In one embodiment, a WBC laser system comprises: an array of beam emitters each emitting a beam; focusing optics for focusing the beams toward a dispersive element; the dispersive element for receiving and dispersing the focused beams, thereby forming a multi-wavelength beam; and an optical fiber for receiving the multi-wavelength beam, the optical fiber comprising (ⅰ) a core for receiving the multi-wavelength beam, reflecting a first portion thereof back toward the dispersive element, and transmitting a second portion thereof as an output beam composed of multiple wavelengths, the core having a partially reflective surface, and (ⅱ) surrounding the core, a cladding having a reflectivity to the multi-wavelength beam of less than 1%. |
