Laser Radar Beam Control With Holographic Diffraction Gratings

Wilfrid B. Veldkamp

doi:10.1117/12.937148

26 October 1983 Laser Radar Beam Control With Holographic Diffraction Gratings

Wilfrid B. Veldkamp

Proceedings Volume 0437, Intl Conf on Computer-Generated Holography; (1983) https://doi.org/10.1117/12.937148
Event: 27th Annual Technical Symposium, 1983, San Diego, United States

Abstract

Binary holographic diffraction gratings were developed to shape Gaussian laser-beam profiles into flattop profiles and to multiplex local oscillator wavefronts for use in active infrared laser radar systems. The use of detector arrays in such systems requires amplitude and phase matching of multi-beam local oscillators to signal wavefronts in order to maximize the system's signal-to-noise ratio and resolution and to minimize the heat generated on the focal plane. In addition, a beam shaper in the transmit beam of the laser radar must shape the centro-symmetric Gaussian profile of the laser beam into a stretched profile that efficiently and uniformly illuminates the far-field footprint of the detector array. Other potential applications include synthetic optical elements, laser beam samplers, and uses in laser annealing and optical communication.

Citation Download Citation

Wilfrid B. Veldkamp "Laser Radar Beam Control With Holographic Diffraction Gratings", Proc. SPIE 0437, Intl Conf on Computer-Generated Holography, (26 October 1983); https://doi.org/10.1117/12.937148

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