Centre National de la Recherche Scientifique/Université de Grenoble 1, Laboratoire Interdisciplinaire de Physique, UMR 5588, Grenoble, F-38041, France. Olivier.jacquin@ujf‑grenoble.fr
Opt Lett. 2012 Jul 1;37(13):2514-6. doi: 10.1364/OL.37.002514.
We present a photon noise and diffraction-limited imaging method combining an imaging laser and ultrasonic waves. The laser optical feedback imaging (LOFI) technique is an ultrasensitive imaging method for imaging objects through or embedded within a scattering medium. However, LOFI performances are dramatically limited by parasitic optical feedback occurring in the experimental setup. In this Letter, we have tagged the ballistic photons by an acousto-optic effect in order to filter the parasitic feedback effect and to reach the theoretical and ultimate sensitivity of the LOFI technique. We present the principle and the experimental setup of the acousto-optic laser optical feedback imaging technique, and we demonstrate the suppression of the parasitic feedback.
我们提出了一种结合成像激光和超声波的光子噪声和衍射极限成像方法。激光光反馈成像（LOFI）技术是一种通过散射介质对物体进行成像的超灵敏成像方法。然而，LOFI 的性能受到实验设置中寄生光反馈的严重限制。在本信中，我们通过声光效应标记弹道光子，以过滤寄生反馈效应并达到 LOFI 技术的理论和极限灵敏度。我们介绍了声光激光光反馈成像技术的原理和实验设置，并演示了寄生反馈的抑制。
