Spectrally-resolved point-spread-function engineering using a complex medium
arXiv:2007.09050 · doi:10.1364/OE.403578
Abstract
Propagation of an ultrashort pulse of light through strongly scattering media generates an intricate spatio-spectral speckle that can be described by means of the multi-spectral transmission matrix (MSTM). In conjunction with a spatial light modulator, the MSTM enables the manipulation of the pulse leaving the medium; in particular focusing it at any desired spatial position and/or time. Here, we demonstrate how to engineer the point-spread-function of the focused beam both spatially and spectrally, from the measured MSTM. It consists in numerically filtering the spatial content at each wavelength of the matrix prior to focusing. We experimentally report on the versatility of the technique through several examples, in particular as an alternative to simultaneous spatial and temporal focusing, with potential applications in multiphoton microscopy.
arXiv comment7 pages, 5 figures
References in corpus (14)
- Measuring the Transmission Matrix in Optics : An Approach to the Study and Control of Light Propagation in Disordered Media
- Focusing and Compression of Ultrashort Pulses through Scattering Media
- Brain-wide 3D imaging of neuronal activity in Caenorhabditis elegans with sculpted light
- Attosecond Lighthouses
- Control of light transmission through opaque scattering media in space and time
- Shaping speckles: spatio-temporal focussing of an ultrafast pulse through a multiply scattering medium
- Using a multimode fiber as a high resolution, low loss spectrometer
- High-resolution and broadband all-fiber spectrometers
- Spatiotemporal coherent control of light through a multiply scattering medium with the Multi-Spectral Transmission Matrix
- Deterministic control of broadband light through a multiply scattering medium via the multispectral transmission matrix
- Transmission-matrix-based point-spread-function engineering through a complex medium
- Deterministic light focusing in space and time through multiple scattering media with a Time-Resolved Transmission Matrix approach
- Control of the temporal and polarization response of a multimode fiber
- Transmission matrix approaches for non-linear fluorescence excitation through multiple scattering media