Efficient method for controlling the spatial coherence of a laser
arXiv:1307.3361 · doi:10.1364/OL.38.003858
Abstract
An efficient method to tune the spatial coherence of a degenerate laser over a broad range with minimum variation in the total output power is presented. It is based on varying the diameter of a spatial filter inside the laser cavity. The number of lasing modes supported by the degenerate laser can be controlled from 1 to 320,000, with less than a 50% change in the total output power. We show that a degenerate laser designed for low spatial coherence can be used as an illumination source for speckle-free microscopy that is 9 orders of magnitude brighter than conventional thermal light.
Cited by in corpus (20)
- Low-spatial coherence electrically-pumped semiconductor laser for speckle-free full-field imaging
- Complex Lasers with Controllable Coherence
- Real-time wavefront-shaping through scattering media by all optical feedback
- Symmetry-protected zero-mode laser with a tunable spatial profile
- Massively degenerate coherent perfect absorber for arbitrary wavefronts
- Electrically driven random lasing from a modified Fabry-Perot laser diode
- Low-spatial-coherence broadband fiber source for speckle free imaging
- Coherence switching of a degenerate VECSEL for multimodality imaging
- Spatio-Temporal Supermodes:Rapid Reduction of Spatial Coherence in Highly Multimode Lasers
- Suppressing meta-holographic artifacts by laser coherence tuning
- Accelerating speckle suppression by a degenerate cavity laser with an intracavity phase diffuser
- Electrically pumped semiconductor laser with low spatial coherence and directional emission
- Intracavity frequency-doubled degenerate laser
- Controlling mode competition by tailoring the spatial pump distribution in a laser: A resonance-based approach
- Real-time full-field imaging through scattering media by all-optical feedback
- Parallel random LiDAR with spatial multiplexing of a many-mode laser
- Condensation of Thresholds in Multimode Microlasers
- Dynamical control of square microlaser emission via symmetry classes
- Degenerate optical resonator for the enhancement of large laser beams
- High-resolution digital control of highly multimode laser