| 摘要 |
Methods are generally provided of reducing speckle of a laser beam from a laser source guided through an optical waveguide. The method includes vibrating an optical waveguide at a first point along the optical waveguide at a first frequency (e.g., having a range of about 20 kHz to about 20 GHz) for a certain distance (e.g., a distance of about 0.1 mm to about 5 cm), and directing the laser beam out of the optical waveguide from the laser source to a target. Such methods are particularly useful for scribing a thin film layer on a photovoltaic module (e.g., a cadmium telluride-based thin film photovoltaic device). Fiber optic laser systems are also generally provided for reducing speckle of a laser beam from a laser source guided through an optical waveguide.
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