Phased array diffractive wavefront control system for continual agile beam steering and tracking

Lewis F. DeSandre; Mark T. Gruneisen; James R. Rotge; Raymond C. Dymale; Donald L. Lubin

doi:10.1117/12.581194

12 October 2004 Phased array diffractive wavefront control system for continual agile beam steering and tracking

Lewis F. DeSandre, Mark T. Gruneisen, James R. Rotge, Raymond C. Dymale, Donald L. Lubin

Proceedings Volume 5553, Advanced Wavefront Control: Methods, Devices, and Applications II; (2004) https://doi.org/10.1117/12.581194
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

Agile beam steering of optical radiation using phased arrays offers significant advantages, such as weight, stability, speed and power requirements, over conventional beam steering systems based on large optics, telescopes, and gimbals. Phased arrays incorporating programmable diffractive optics systems based on MEMS or liquid crystal spatial light modulators are being investigated for a number of applications including large aberration compensation, near-diffraction-limited imaging and agile beam steering. A prototype system uses discrete phase steps to approximate modulo-2π phase profiles and operates with 307,200 independently addressable elements, 100% fill factor and total optical efficiencies of up to 93%. This paper presents analysis of an agile beam steering phased array system incorporating physical parameters such as fill factor, 2π reset fidelity and influence function. Diffractive wavefront control with non-2π resets is shown to produce continual beam steering. Expressions and modeling of the far-field beam pattern and off-axis beam steering efficiency are presented. Measured diffraction efficiencies show close comparison with calculated values.

Citation Download Citation

Lewis F. DeSandre, Mark T. Gruneisen, James R. Rotge, Raymond C. Dymale, and Donald L. Lubin "Phased array diffractive wavefront control system for continual agile beam steering and tracking", Proc. SPIE 5553, Advanced Wavefront Control: Methods, Devices, and Applications II, (12 October 2004); https://doi.org/10.1117/12.581194

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