中国物理B ›› 2024, Vol. 33 ›› Issue (10): 104202-104202.doi: 10.1088/1674-1056/ad6420
Imaging through scattering layers using a near-infrared low-spatial-coherence fiber random laser
Anda Shi(史安达)1,†, Zeyu Wang(王泽宇)1,†, Chenxi Duan(段辰锡)2,†, Zhao Wang(王昭)1,‡, and Weili Zhang(张伟利)1
- 1 School of Information and Communication Engineering, University of Electronic Science & Technology of China, Chengdu 611731, China;
2 Yingcai Honors College, University of Electronic Science & Technology of China, Chengdu 611731, China
Imaging through scattering layers using a near-infrared low-spatial-coherence fiber random laser
Anda Shi(史安达)1,†, Zeyu Wang(王泽宇)1,†, Chenxi Duan(段辰锡)2,†, Zhao Wang(王昭)1,‡, and Weili Zhang(张伟利)1
- 1 School of Information and Communication Engineering, University of Electronic Science & Technology of China, Chengdu 611731, China;
2 Yingcai Honors College, University of Electronic Science & Technology of China, Chengdu 611731, China
摘要： Optical memory effect-based speckle-correlated technology has been developed for reconstructing hidden objects from disordered speckle patterns, achieving imaging through scattering layers. However, the lighting efficiency and field of view of existing speckle-correlated imaging systems are limited. Here, a near-infrared low spatial coherence fiber random laser illumination method is proposed to address the above limitations. Through the utilization of random Rayleigh scattering within dispersion-shifted fibers to provide feedback, coupled with stimulated Raman scattering for amplification, a near-infrared fiber random laser exhibiting a high spectral density and extremely low spatial coherence is generated. Based on the designed fiber random laser, speckle-correlated imaging through scattering layers is achieved, with high lighting efficiency and a large imaging field of view. This work improves the performance of speckle-correlated imaging and enriches the research on imaging through scattering medium.
中图分类号: (Wave propagation in random media)
- 42.25.Dd