首页>
外国专利>
Light wavelength selection device and method using diffraction grating with peak detection
Light wavelength selection device and method using diffraction grating with peak detection
展开▼
机译:使用具有峰值检测的衍射光栅的光波长选择装置和方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
An input light beam is applied to a diffraction element. The diffraction element is moved relative to a path of the input light beam while the input light beam is diffracted by the diffraction element and is thereby made into a diffracted light beam traveling from the diffraction element. A portion of the diffracted light beam is detected, and an intensity of the received diffracted light beam is also detected. In addition, a peak of the detected intensity of the received diffracted light beam is detected while the diffraction element is moved relative to the path of the input light beam. A position of the diffraction element is detected at which the detected peak of the detected intensity occurs. The position of the diffraction element is controlled on the basis of the detected position at which the detected peak of the detected intensity occurs.
展开▼