Work

Spatial, spectral, and temporal light control in disordered multimode fiber by spatial phase modulation

Year: 2026

Type: article

Abstract: Methods for simultaneously controlling the spatial, spectral, and temporal properties of ultrashort pulses after propagation through a disordered multimode fiber are presented. By leveraging the dispersion and strong mode-mixing within a disordered fiber, multidimensional control over the output pulse is achieved by tailoring only the spatial wavefront of the input pulse. The ability to generate reconfigurable spatiotemporal foci at single or multiple points in space and time is demonstrated experimentally. The control is extended to the spectral domain, as demonstrated by the successful creation of spectrally-dependent foci, with different wavelength bands focused to distinct spatial locations and times. An approach for time-averaged wavefront shaping is also introduced and is shown to enable the creation of complex spatial intensity patterns with tailored properties.

Source: APL Photonics

DOI: 10.1063/5.0299461

Authors: Nicholas Bender, Henry Haig, Demetrios Christodoulides, Frank Wise

Institutions: Cornell University, University of Southern California

Language: English

Topic: Random lasers and scattering media

Subfield: Acoustics and Ultrasonics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,750

Funders: U.S. Navy, Office of Naval Research