Resurgence of diffractive optics in imaging, sensing, and inferencing

Rajesh Menon

doi:10.1117/12.2614056

5 March 2022 Resurgence of diffractive optics in imaging, sensing, and inferencing

Rajesh Menon

Proceedings Volume PC12011, High Contrast Metastructures XI; PC120110P (2022) https://doi.org/10.1117/12.2614056
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

Traditional refractive lenses are bulky owing to their curvature. Flat diffractive lenses can overcome this difficulty, but traditional diffractive optics have limited reach, primarily due to chromaticity. Recently, we have shown that by treating the “imaging” phenomenon as simply information transfer from the object to the image plane, the spatial distribution of the phase in the focal plane can be an arbitrary function. Using this concept, we have shown that allowing the phase in the image plane of a flat lens to be a free parameter enables imaging properties of unprecedented versatility in flat, multilevel diffractive lenses (MDLs). Our research group has demonstrated multi-level diffraction lenses in multiple high performance categories: unchromatic lenses with dramatically improved operating bandwidths, high NA and large aperture sizes, and extreme depth of focus.Furthermore, these can be combined with advanced machine-learning algorithms to enhance inferencing.

Conference Presentation

Citation Download Citation

Rajesh Menon "Resurgence of diffractive optics in imaging, sensing, and inferencing", Proc. SPIE PC12011, High Contrast Metastructures XI, PC120110P (5 March 2022); https://doi.org/10.1117/12.2614056

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