Sensors, Vol. 20, Pages 6462: Metrology of a Focusing Capillary Using Optical Ptychography

Sensors, Vol. 20, Pages 6462: Metrology of a Focusing Capillary Using Optical Ptychography
Sensors doi: 10.3390/s20226462
Authors:
Xiaojing Huang
Evgeny Nazaretski
Weihe Xu
Dean Hidas
Mark Cordier
Benjamin Stripe
Wenbing Yun
Yong S. Chu

The focusing property of an ellipsoidal monocapillary has been characterized using the ptychography method with a 405 nm laser beam. The recovered wavefront gives a 12.5×10.4μm2 focus. The reconstructed phase profile of the focused beam can be used to estimate the height error of the capillary surface. The obtained height error shows a Gaussian distribution with a standard deviation of 1.3 μm. This approach can be used as a quantitative tool for evaluating the inner functional surfaces of reflective optics, complementary to conventional metrology methods.

Source: Sensors - November 12, 2020 Category: Biotechnology Authors: Xiaojing Huang Evgeny Nazaretski Weihe Xu Dean Hidas Mark Cordier Benjamin Stripe Wenbing Yun Yong S. Chu Tags: Letter Source Type: research