2015/09/10 by Chia Wei Hsu, Arthur Goetschy, Yaron Bromberg +2 · 4 citations
Computer Science · Engineering · Physics and Astronomy · #Absorption (acoustics) #Bandwidth (computing) #Broadband #Computational physics #Computer science #Diffusion #Laser #Modulation (music) #Neural Networks and Reservoir Computing #Optical Polarization and Ellipsometry #Optics #Physics #Quantum mechanics #Random lasers and scattering media #Speckle pattern #Spectral width #Telecommunications #Transmission (telecommunications) #physics.optics
paper · pdf · doi:10.1103/physrevlett.115.223901
published as Phys. Rev. Lett. 115, 223901 (2015)
arxiv created 2015/09/10 · openalex publication_date 2015/11/25 · arxiv updated 2015/11/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Spatial modulation of the incident wave front has become a powerful method for controlling the diffusive transport of light in disordered media; however, such interference-based control is intrinsically sensitive to frequency detuning. Here, we show analytically and numerically that certain wave fronts can exhibit strongly enhanced total transmission or absorption across bandwidths that are orders of magnitude broader than the spectral correlation width of the speckles. Such broadband enhancement is possible due to long-range correlations in coherent diffusion, which cause the spectral degrees of freedom to scale as the square root of the bandwidth rather than the bandwidth itself.