Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics

Low-noise photorefractive amplification and the detection of weak signals

Sebastien Breugnot, M. Defour, H. Rajhenbach, J.-P. Huignard

Published May 21, 1995• 0 citations
OpenAlex

Related papers

Photorefractive amplification and detection of weak signals buried in the beam fanning noise

Henri J. Rajbenbach, Jean‐Pierre Huignard, Sebastien Breugnot +1 more

Conference on Lasers and Electro-Optics•May 2, 1993•0 citations

Heterodyne detection of weak optical wavefronts burried in a photorefractive fanning noise

Sebastien Breugnot, M. Defour, Henri J. Rajbenbach +1 more

Optics Communications•Dec 1, 1993•7 citations

Low-noise amplification of ultraweak optical wave fronts in photorefractive Bi_12SiO_20

Henri J. Rajbenbach, A. Delboulbé, Jean‐Pierre Huignard

We propose and demonstrate a technique for suppressing the optical noise of the photorefractive amplifiers that exhibit a sharp gain resonance around an optimum pump-to-signal angle. The amplification of extremely weak images is achieved when the entrance face of the crystal is tilted with respect to the pump beam direction. In Bi(12)SiO(20) subpicowatt optical signals are detected with this technique.

Optics Letters•Oct 1, 1991•20 citations

Enhancement of weak optical signal detection based on phase-sensitive amplification

Changchang Zhang, Zhaolu Wang, Wenjuan Shi +4 more

Optics & Laser Technology•Jan 17, 2025•2 citations

Low-noise photorefractive amplification and detection of very weak signal beams

Sebastien Breugnot, Henri J. Rajbenbach, M. Defour +1 more

We present theoretical and experimental analyses of the signal-to-noise ratio (SNR) of photorefractive two-wave mixing detection that uses BaTiO(3). The influence of beam fanning is taken into account in the detection process. Different known methods to enhance the SNR of the detection are theoretically and experimentally compared. A 10-fold improvement of the SNR is obtained, and the detection of a 1-pW signal intensity for a SNR of 50 is achieved for two of them.

Optics Letters•Mar 1, 1995•13 citations

Amplification of near-infrared light in a photorefractive ring resonator

M. Kaczmarek, Roger Sean Cudney, Robert W. Eason

Applied Physics B•May 1, 2001•1 citation