Speckle-free laser imaging
arXiv:1110.6860 · doi:10.1038/nphoton.2012.90
Abstract
Many imaging applications require increasingly bright illumination sources, motivating the replacement of conventional thermal light sources with light emitting diodes (LEDs), superluminescent diodes (SLDs) and lasers. Despite their brightness, lasers and SLDs are poorly suited for full-field imaging applications because their high spatial coherence leads to coherent artifacts known as speckle that corrupt image formation. We recently demonstrated that random lasers can be engineered to provide low spatial coherence. Here, we exploit the low spatial coherence of specifically-designed random lasers to perform speckle-free full-field imaging in the setting of significant optical scattering. We quantitatively demonstrate that images generated with random laser illumination exhibit higher resolution than images generated with spatially coherent illumination. By providing intense laser illumination without the drawback of coherent artifacts, random lasers are well suited for a host of full-field imaging applications from full-field microscopy to digital light projector systems.
5 pages, 4 figures
Cited by in corpus (88)
- Adaptive pumping for spectral control of random lasers
- Speckle-Free Coherence Tomography of Turbid Media
- Low-spatial coherence electrically-pumped semiconductor laser for speckle-free full-field imaging
- Complex Lasers with Controllable Coherence
- Efficient method for controlling the spatial coherence of a laser
- Random lasers, Lévy statistics and spin glasses: Synergy between photonics and complex systems
- Random Lasers for Broadband Directional Emission
- Turbulence Hierarchy in a Random Fibre Laser
- A cold-atom random laser
- A step-by-step guide to reduce spatial coherence of laser light using a rotating ground glass diffuser
- Rayleigh fading suppression in one-dimension optical scatters
- Optofluidic random laser
- Observation of Replica Symmetry Breaking in the 1D Anderson Localization Regime in an Erbium-Doped Random Fiber Laser
- Low-loss high-speed speckle reduction using a colloidal dispersion
- Active subnanometer spectral control of a random laser
- Electrically driven random lasing from a modified Fabry-Perot laser diode
- Replica symmetry breaking in specially designed TiO nanoparticles-based dye-colloidal random laser
- Low-spatial-coherence broadband fiber source for speckle free imaging
- Hanbury Brown and Twiss Interferometry with Twisted Light
- Coherence switching of a degenerate VECSEL for multimodality imaging
- The effects of spatiotemporal coherence on interferometric imaging
- Spatio-Temporal Supermodes:Rapid Reduction of Spatial Coherence in Highly Multimode Lasers
- Spontaneous symmetry breaking and phase coherence of a photon Bose-Einstein condensate coupled to a reservoir
- Spatio-Temporal Optical Coherence Tomography provides advanced imaging of the human retina and choroid
- Accelerating speckle suppression by a degenerate cavity laser with an intracavity phase diffuser
- Light Localization and Cooperative Coupling Effects in Aperiodic Vogel Spirals
- Switching and amplification in disordered lasing resonators
- Photodegradation and self-healing in a Rhodamine 6G dye and YO nanoparticle-doped polyurethane random laser
- Electrically pumped semiconductor laser with low spatial coherence and directional emission
- Sub-thermal to super-thermal light statistics from a disordered lattice via deterministic control of excitation symmetry
- Tunable degree of localization in random lasers with controlled interaction
- Random lasing actions in self-assembled perovskite nanoparticles
- Flexible and tensile microporous polymer fibers for wavelength-tunable random lasing
- Tailoring correlations of the local density of states in disordered photonic materials
- Heterogeneous Random Laser with Switching Activity Visualized by Replica Symmetry Breaking Maps
- Diverse regimes of mode intensity correlation in nanofiber random lasers through nanoparticle doping
- Self-healing organic-dye-based random lasers
- A narrow-band speckle-free light source via random Raman lasing
- Tuning random lasing in photonic glasses
- Photon statistics and bunching of a chaotic semiconductor laser
- Random Lasing and Reversible Photodegradation in Disperse Orange 11 Dye-Doped PMMA with Dispersed ZrO Nanoparticles
- Self-starting nonlinear mode-locking in random lasers
- Fluctuations and Correlations of Emission from Random Lasers
- Optimizing Coherence Suppression in a Laser Broadened by Phase Modulation with Noise
- Biomimetic random lasers with tunable spatial and temporal coherence
- Intracavity frequency-doubled degenerate laser
- Multimode Lasing in Wave-Chaotic Semiconductor Microlasers
- Controlling mode competition by tailoring the spatial pump distribution in a laser: A resonance-based approach
- Nanoparticle-doped electrospun fiber random lasers with spatially extended light modes
- Sensitive control of broad-area semiconductor lasers by cavity shape
- Discrete Anderson Speckle
- Label-free chip-based evanescent light scattering super-resolution and superior-contrast optical microscopy (cELS)
- Two-shot measurement of spatial coherence
- Efficient generation of propagation-invariant spatially-stationary partially coherent fields
- Interplay of Stimulated Emission and Fluorescence Resonance Energy Transfer in Electrospun Light-Emitting Fibers
- A Random Laser as a Dynamical Network
- Tuneable optical gain and broadband lasing driven in electrospun polymer fibers by high dye concentration
- Universality class of the mode-locked glassy random laser
- Intrinsic degree of coherence of two-qubit states and measures of two-particle quantum correlations
- Phenomenological model for spectral broadening of incoherent light in fibers via self-phase modulation and dispersion
- Harnessing the power of complex light propagation in multimode fibers for spatially resolved sensing
- Experimental study of speckle patterns generated by low-coherence semiconductor laser light
- Spatial sub-Rayleigh imaging analysis via speckle laser illumination
- Spatial coherence control and analysis via micromirror-based mixed-state ptychography
- Optimizing optical potentials with physics-inspired learning algorithms
- Condensation of Thresholds in Multimode Microlasers
- Controlling propagation of spatial coherence for enhanced imaging through scattering media
- Tracking nanoscale perturbation in active disordered media
- Controlling spatial coherence with an optical complex medium
- Diffusive to quasi-ballistic random laser: incoherent and coherent models
- Naturally-Degradable Photonic Devices with Transient Function by Heterostructured Waxy-Sublimating and Water-Soluble Materials
- Non-resonant lasing in a deep-hole scattering cavity
- An experimental technique for measuring radial coherence
- End-coupled random lasers: a basis for artificial neural networks
- Mode visualisation and control of complex lasers using neural networks
- Local circular polarizations in nanostructures induced by linear polarization via optical near-fields
- Random Raman lasing
- Demystifying speckle field quantitative phase microscopy
- Modeling of a Single Multimode Fiber Imaging System
- Optimal universal bounds for waves with varied coherence based on supremum and infimum coherence spectra
- Graphene based widely-tunable and singly-polarized pulse generation with random fiber lasers
- Random lasers with tunable angular spectra for high contrast imaging
- Multicolor Graphdiyne Random Lasers
- High-cooperativity nanofiber laser
- A random laser based on diamond nanoneedles
- Noise-Resilient Imaging through Coherence Filtering
- Optical rogue wave in random distributed feedback fiber laser
- Infrared single-pixel imaging utilising microscanning