In this case, the pulse-shaped laser light emitted from the mode-locked semiconductor laser device is impacted on the first diffraction grating so as to emit first order or more diffracted light which is then impacted on the second diffraction grating so as to emit first order or more diffracted light and arrives at the partial reflection mirror.
Conventional diffraction gratings for holograms are consti-tuted by microstructures of a series of parallel, sharp-edged grooves or troughs having a particular range of sizes, depths and spacing.
常规的全息图衍射光栅由具有特定尺寸、深度和间隔范围的一系列平行锐缘凹槽的微结构构成。
This process of writing individual lines or troughs in a diffraction grating can be carried out quickly and efficiently simply by the appropriate programming for the control system operating the laser and the scanning arrangement.
Rather, virtually any kind of optical product from diffraction grating to lens can be made using the present invention.
相反,实际上可使用本发明制作从衍射光栅到透镜的任何类型的光学产品。
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