The BEFWM system for detection and phase conjugation of a weak laser beam

Anatoliy Khizhnyak; Vladimir Markov

doi:10.1117/12.735179

25 September 2007 The BEFWM system for detection and phase conjugation of a weak laser beam

Anatoliy Khizhnyak, Vladimir Markov

Proceedings Volume 6708, Atmospheric Optics: Models, Measurements, and Target-in-the-Loop Propagation; 67080G (2007) https://doi.org/10.1117/12.735179
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

Real environmental conditions, such as atmospheric turbulence and aero-optics effects, make practical implementation of the object-in-the-loop (TIL) algorithm a very difficult task, especially when the system is set to operate with a signal from the diffuse surface image-resolved object. The problem becomes even more complex since for the remote object the intensity of the returned signal is extremely low. This presentation discusses the results of an analysis and experimental verification of a thresholdless coherent signal receiving system, capable not only in high-sensitivity detection of an ultra weak object-scattered light, but also in its high-gain amplification and phase conjugation. The process of coherent detection by using the Brillouin Enhanced Four Wave Mixing (BEFWM) enables retrieval of complete information on the received signal, including accurate measurement of its wavefront. This information can be used for direct real-time control of the adaptive mirror.

Citation Download Citation

Anatoliy Khizhnyak and Vladimir Markov "The BEFWM system for detection and phase conjugation of a weak laser beam", Proc. SPIE 6708, Atmospheric Optics: Models, Measurements, and Target-in-the-Loop Propagation, 67080G (25 September 2007); https://doi.org/10.1117/12.735179

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