arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1901.07201physics.opticseess.IV
收藏

一种带数字滤波器的高速波长不变单像素波前传感器

A high-speed, wavelength invariant, single-pixel wavefront sensor with a digital micromirror device

Mitchell A. Cox, Ermes Toninelli, Ling Cheng, Miles Padgett, Andrew Forbes

摘要:

光束的波前测量是一项复杂的任务,通常需要一系列空间分辨的光强测量。例如,可以使用检测器阵列来测量未知激光束的横向平面中的局部相位梯度。在大多数情况下,重构波前的分辨率由探测器的分辨率决定,在红外情况下,探测器的分辨率受到严重限制。在这里,我们采用了数字微镜器件(DMD)和单像素探测器(即没有空间分辨率),以展示具有良好分辨率的未知波前的重建。我们的方法利用模式分解的入射场的DMD,使波前测量在4 kHz的可见光和红外激光束。

英文摘要:

The wavefront measurement of a light beam is a complex task, which often requires a series of spatially resolved intensity measurements. For instance, a detector array may be used to measure the local phase gradient in the transverse plane of the unknown laser beam. In most cases the resolution of the reconstructed wavefront is determined by the resolution of the detector, which in the infrared case is severely limited. Here we employ a Digital Micro-mirror Device (DMD) and a single-pixel detector (i.e. with no spatial resolution) to demonstrate the reconstruction of unknown wavefronts with excellent resolution. Our approach exploits modal decomposition of the incoming field by the DMD, enabling wavefront measurements at 4~kHz of both visible and infrared laser beams.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑