Wavefront Aberration Sensor Based on a Multichannel Diffractive Optical Element
Svetlana N. Khonina, С. В. Карпеев, Alexey P. Porfirev
Abstract
We propose a new type of a wavefront aberration sensor, that is, a Zernike matched multichannel diffractive optical filter, which performs consistent filtering of phase distributions corresponding to Zernike polynomials. The sensitivity of the new sensor is theoretically estimated. Based on the theory, we develop recommendations for its application. Test wavefronts formed using a spatial light modulator are experimentally investigated. The applicability of the new sensor for the fine-tuning of a laser collimator is assessed.
Topics & Concepts
Zernike polynomialsWavefrontWavefront sensorOpticsAdaptive opticsCollimatorSensitivity (control systems)PhysicsSpatial light modulatorFilter (signal processing)Optical aberrationComputer scienceComputer visionElectronic engineeringEngineeringAdaptive optics and wavefront sensingAdvanced optical system designOptical measurement and interference techniques