Spatial filter

（重定向自Spatial filtering）

$A computer-generated example of an Airy disk, point-source diffraction pattern.$

A spatial filter is an optical device which uses the principles of Fourier optics to alter the structure of a beam of light or other electromagnetic radiation, typically coherent laser light. Spatial filtering is commonly used to "clean up" the output of lasers, removing aberrations in the beam due to imperfect, dirty, or damaged optics, or due to variations in the laser gain medium itself. This filtering can be applied to transmit a pure transverse mode from a multimode laser while blocking other modes emitted from the optical resonator. The term "filtering" indicates that the desirable structural features of the original source pass through the filter, while the undesirable features are blocked. Apparatus which follows the filter effectively sees a higher-quality but lower-powered image of the source, instead of the actual source directly.

单词	Spatial filtering
释义	Spatial filtering 英语百科 Spatial filter （重定向自Spatial filtering） $A computer-generated example of an Airy disk, point-source diffraction pattern.$ A spatial filter is an optical device which uses the principles of Fourier optics to alter the structure of a beam of light or other electromagnetic radiation, typically coherent laser light. Spatial filtering is commonly used to "clean up" the output of lasers, removing aberrations in the beam due to imperfect, dirty, or damaged optics, or due to variations in the laser gain medium itself. This filtering can be applied to transmit a pure transverse mode from a multimode laser while blocking other modes emitted from the optical resonator. The term "filtering" indicates that the desirable structural features of the original source pass through the filter, while the undesirable features are blocked. Apparatus which follows the filter effectively sees a higher-quality but lower-powered image of the source, instead of the actual source directly.
随便看	thermal fission的意思 thermal fissionability的意思 thermal fission cross section的意思 thermal fission factor的意思 thermal fission system的意思 thermal fission yield的意思 thermal fixation的意思 thermal fixation dyeing的意思 thermal flame safeguard的意思 thermal flash的意思 thermal flasher的意思 thermal flexibility的意思 thermal flexure的意思 thermal flooding的意思 thermal flow的意思 thermal flowmeter的意思 thermal flow meter的意思 Thermal fluctuation的意思 thermal fluctuation magnetic aftereffect的意思 thermal fluid的意思 thermal fluid heater的意思 thermal fluid heating system的意思 thermal fluid mechanics的意思 thermal fluid system的意思 Thermal flux的意思