Fringe pattern distribution in small angle rotationally shearing interferometer

Marija Strojnik

doi:10.1117/12.3036953

12 June 2024 Fringe pattern distribution in small angle rotationally shearing interferometer

Marija Strojnik

Proceedings Volume 13187, Advances in 3OM: Opto-Mechatronics, Opto-Mechanics, and Optical Metrology (3OM 2023); 1318702 (2024) https://doi.org/10.1117/12.3036953
Event: Advances in 3OM: Opto-Mechatronics, Opto-Mechanics, and Optical Metrology, 2023, Timisoara, Romania

Abstract

We study the form and shape of the interferometric patterns obtained in a small angle rotationally shearing interferometer (iRSI) and compare them to those obtained in the traditional Mach-Zehnder interferometer (MZI). We concentrate on low order rotationally asymmetric aberrations, tilt, astigmatism, and coma. We find that the iRSI rotates the interferometric pattern by the angle p/(2l), where l is the second summation index of the wavefront polynomial. Thus, the interferometric patterns for the tilt and coma are rotated by 90 degrees, while those for astigmatism by only 45 degrees, relative to those of the MZI. Additionally, when the experimenter wishes to implement a rotation of the interference pattern in the IRSI, he / she needs to incorporate a relative change of the infinitesimal rotation (dj) from some (δφ)_min to (δφ)_max. However, the true derivative function is accomplished only for an infinitesimal shear angle.

Citation Download Citation

Marija Strojnik "Fringe pattern distribution in small angle rotationally shearing interferometer", Proc. SPIE 13187, Advances in 3OM: Opto-Mechatronics, Opto-Mechanics, and Optical Metrology (3OM 2023), 1318702 (12 June 2024); https://doi.org/10.1117/12.3036953

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available