首页>
外国专利>
Generation of high-power, high brightness optical beams by optical cutting and beam-shaping of diode lasers
Generation of high-power, high brightness optical beams by optical cutting and beam-shaping of diode lasers
展开▼
机译：通过二极管激光器的光学切割和光束整形产生高功率，高亮度光束
展开▼
页面导航
摘要
著录项
相似文献
摘要
An optical beam-shaping element is used to produce a high brightness laser beam from a diode bar or a single emitter diode, allowing for efficient coupling of the beam into an optical fiber. An embodiment of the beam-shaping element allows the construction of a quasi-monolithic beam shaper incorporating both fast axis collimation as well as beam rotation. Additional slow axis collimation of the individual emitting elements of the diode bar is also possible in one quasi-monolithic design. The beam rotation element may comprise an array of beam-inverting planar grin lenses aligned with their axes of equal refractive index at an angle of ±45° with respect to the slow axes of the emitters. Alternative embodiments comprise beam rotation elements based on Fresnel lens arrays or aspheric cylindrical lens arrays. The beam-shaping element can be used in conjunction with stacks of diode bars, where optical cutting of the diode bar beams in a parallelepiped coated with multiple reflective stripes can be further implemented to symmetrize the resulting optical beam. Alternatively optical beams of ultra-high power can be generated by combining multiple fiber coupled diode bars in a fiber bundle incorporating rectangular fiber cores, metallization and a heat sink.
展开▼
