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A novel semiconductor-based, fully incoherent amplified spontaneous emission light source for ghost imaging
Sébastien Hartmann1, Wolfgang Elsäßer1,2
1Institute of Applied Physics, Technische Universität Darmstadt, 64289 Darmstadt, Germany.
Scientific Reports
|February 3, 2017
Summary
Researchers introduce a superluminescent diode as a novel, efficient light source for classical ghost imaging (GI). This compact emitter offers potential for high-speed and long-range GI applications.
Area of Science:
- Quantum optics
- Photonics
- Optical imaging
Background:
- Ghost imaging (GI) initially used entangled light, later transitioning to classical sources.
- Current classical GI light sources face efficiency and directionality challenges.
Purpose of the Study:
- To propose and investigate a broad-area superluminescent diode (SLD) as a new light source for classical ghost imaging.
- To analyze the coherence properties of SLDs for GI applications.
Main Methods:
- Investigated the coherence behavior of a spectrally broadband superluminescent diode.
- Utilized an interferometric two-photon detection technique to resolve ultra-short correlation timescales.
- Quantified coherence time, photon statistics, and spatial mode numbers.
Main Results:
- Demonstrated complete incoherent light behavior from the superluminescent diode.
- Characterized the coherence properties, confirming suitability for classical GI.
- Performed a one-dimensional proof-of-principle GI experiment.
Conclusions:
- Superluminescent diodes are viable, compact light sources for classical ghost imaging.
- These emitters offer potential benefits for high-speed GI and long-range sensing applications.
