Coherent Two-Photon LIDAR with Incoherent Light
SCIE
SCOPUS
- Title
- Coherent Two-Photon LIDAR with Incoherent Light
- Authors
- Lee C.-H.; Kim Y.; Im D.-G.; Kim U.-S.; Tamma V.; Kim Y.-H.
- Date Issued
- 2023-11
- Publisher
- American Physical Society
- Abstract
- Coherent light detection and ranging (LIDAR) offers exceptional sensitivity and precision in measuring the distance of remote objects by employing first-order interference. However, the ranging capability of coherent LIDAR is principally constrained by the coherence time of the light source determined by the spectral bandwidth. Here, we introduce coherent two-photon LIDAR, which eliminates the range limitation of coherent LIDAR due to the coherence time. Our scheme capitalizes on the counterintuitive phenomenon of two-photon interference of thermal light, in which the second-order interference fringe remains impervious to the short coherence time of the light source determined by the spectral bandwidth. By combining this feature with transverse two-photon interference of thermal light, we demonstrate distance ranging beyond the coherence time without relying on time-domain interference fringes. Moreover, we show that our coherent two-photon LIDAR scheme is robust to turbulence and ambient noise. This work opens up novel applications of two-photon correlation in classical light.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/120268
- DOI
- 10.1103/PhysRevLett.131.223602
- ISSN
- 0031-9007
- Article Type
- Article
- Citation
- Physical Review Letters, vol. 131, no. 22, 2023-11
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- There are no files associated with this item.
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