Distortion Correction for an Imaging Ellipsometer.
J Phys Chem A
; 124(13): 2708-2713, 2020 Apr 02.
Article
in En
| MEDLINE
| ID: mdl-32196333
ABSTRACT
A simple imaging add-on utilizing the combination of a relay lens and an optical grating to a nulling ellipsometer for the purpose of imaging and correcting angular distortion is designed, built, and tested. Image contrast is achieved on a standardized silicon wafer, graphene transferred on silicon wafer, a self-assembled monolayer of 1-octadecanethiol on gold, and a 11 mixture of dilauroylphosphatidylcholine / distearoylphosphatidylcholine (DLPC/DSPC) on copper. The configuration used in this paper corrects the angular distortion and depth of focus with a spatial resolution of 4.38 µm in the laser's incident direction and 7.81 µm in the direction that is perpendicular to the incident plane together with 3 Å of normal resolution while still maintaining a large field of view of at least 720 µm × 550 µm in focus without executing any line scanning, post-image reconstruction, or specially customized objective method. Better resolution is possibly attained with higher NA optics.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
J Phys Chem A
Journal subject:
QUIMICA
Year:
2020
Document type:
Article
Affiliation country:
United States