在入射光束的孔径受限制的情况下，利用衍射光学元件来增加激光束的焦深。
Placing a diffractive optical element(DOE) on the incident laser beam to improve the depth of focus, the DOE'S aperture is variable.
介绍了当前光纤组束研究中的几种主流方法，即利用受激布里渊散射的光纤组束；利用衍射光学元件的光纤组束；全光纤组束等。
Several mainstream laser beam combination methods, including stimulated Brillouin scattering, diffraction optics units and all fiber beam combination, are introduced.
介绍了当前光纤组束研究中的几种主流方法，即利用受激布里渊散射的光纤组束；利用衍射光学元件的光纤组束；全光纤组束等。
Several mainstream laser beam combination methods, including stimulated Brillouin scattering, diffraction optics units and all fiber beam combination, are introduced.
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