Restoration of blurred images based on phase conjugation by using single second-order nonlinear parametric processes

Yujie J. Ding

doi:10.1117/12.2061374

5 September 2014 Restoration of blurred images based on phase conjugation by using single second-order nonlinear parametric processes

Yujie J. Ding

Author Affiliations +

Proceedings Volume 9198, Ultrafast Nonlinear Imaging and Spectroscopy II; 919810 (2014) https://doi.org/10.1117/12.2061374
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

We review our previous result: backward difference-frequency generation can be exploited to achieve phase conjugation in a second-order nonlinear medium. The backward configuration can be utilized to achieve broadband quasi-phasematching, compared with the forward counterpart. Our calculation shows that a nonlinear reflectivity of close to 100% is achievable from a laser emitting an output power of ≈ 1 mW. Such an efficient phase conjugator is made feasible by placing the nonlinear medium inside a pump laser cavity. In addition, a Fabry-Perot cavity at the input frequency is used to significantly improve the nonlinear reflectivity. In our previous experimental result, we demonstrated that broadband and polarization-insensitive phase conjugation, achieved based on difference-frequency generation in a second-order nonlinear composite consisting of stacked KTP plates, was exploited to restore blurred images due to phase distortion as a novel scheme. Due to the quasi-phase matching in the stacked KTP crystals, our result reveals that the image restoration is insensitive to the polarization direction and wavelength of the input beam.

Citation Download Citation

Yujie J. Ding "Restoration of blurred images based on phase conjugation by using single second-order nonlinear parametric processes", Proc. SPIE 9198, Ultrafast Nonlinear Imaging and Spectroscopy II, 919810 (5 September 2014); https://doi.org/10.1117/12.2061374

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