Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Video

Updated: Jun 20, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Noise suppression in photorefractive image amplifiers.

H Rajbenbach, A Delboulbé, J P Huignard

    Optics Letters
    |September 18, 2009
    PubMed
    Summary

    This study introduces a simple method to boost the signal-to-noise ratio in photorefractive amplifiers. By using off-axis-rotating crystals, amplified scattered light and interface reflections are eliminated, creating noise-free image amplification.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    A dynamical measure of the black hole mass in a quasar 11 billion years ago.

    Nature·2024
    Same author

    Slow and stored light by photo-isomerization induced transparency in dye doped chiral nematics.

    Optics express·2013
    Same author

    Optical pulsing in a resonator with a highly dispersive nonlinearity.

    Optics letters·2012
    Same author

    Sagnac interferometer with adaptive nonlinear detection.

    Optics letters·2011
    Same author

    Experimental demonstration of a phased-array antenna optically controlled with phase and time delays.

    Applied optics·2010
    Same author

    Compact photorefractive correlator for robotic applications.

    Applied optics·2010

    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Photorefractive amplifiers are crucial for optical signal processing.
    • Amplified scattered light and interface reflections degrade signal quality.

    Purpose of the Study:

    • To develop a technique for significantly enhancing the signal-to-noise ratio (SNR) of photorefractive amplifiers.
    • To demonstrate a method for achieving virtually noise-free image amplification.

    Main Methods:

    • Two-wave mixing was performed in off-axis-rotating Barium Titanate (BaTiO3) crystals.
    • Two-wave mixing was performed in off-axis-rotating Bismuth Silicon Oxide (Bi12SiO20) crystals.
    • The technique focuses on eliminating optical noise sources.

    Main Results:

    • A 20-fold improvement in the signal-to-noise ratio was achieved.
    • The method effectively removed optical noise from amplified scattered light.
    • The method effectively removed optical noise from multiple interface reflections.
    • Virtually noise-free image amplifiers were successfully demonstrated.

    Conclusions:

    • The proposed technique offers a simple yet effective solution for enhancing SNR in photorefractive amplifiers.
    • Off-axis-rotating crystal-based two-wave mixing is a viable strategy for noise reduction.
    • This advancement paves the way for improved optical amplification systems.

    More Related Videos

    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
    10:17

    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

    Published on: July 12, 2017

    Switchable Acoustic and Optical Resolution Photoacoustic Microscopy for In Vivo Small-animal Blood Vasculature Imaging
    10:17

    Switchable Acoustic and Optical Resolution Photoacoustic Microscopy for In Vivo Small-animal Blood Vasculature Imaging

    Published on: June 26, 2017

    Related Experiment Videos

    Last Updated: Jun 20, 2026

    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
    11:08

    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

    Published on: November 30, 2012

    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
    10:17

    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

    Published on: July 12, 2017

    Switchable Acoustic and Optical Resolution Photoacoustic Microscopy for In Vivo Small-animal Blood Vasculature Imaging
    10:17

    Switchable Acoustic and Optical Resolution Photoacoustic Microscopy for In Vivo Small-animal Blood Vasculature Imaging

    Published on: June 26, 2017