Generation of random arrays using clipped laser speckle
Abstract
A technique for generating 2-D arrays of random numbers using clipped laser speckle is presented. A 2-D detector array is exposed to a fully developed laser speckle pattern. When the output of the array is clipped, the elements with value above threshold are set to unity while the others are set to zero. The result is an array of randomly positioned elements of unit value. The spatial coordinates of the elements above threshold are taken as the random deviates. By controlling the clipping threshold for each element, one can dictate the probability that the clipped output from each element will be above threshold. Any distribution can be produced by varying the probability that the output from each element is above threshold. We present experiments performed on a 256 × 256-element detector array for which the elements were individually addressable. The integration time for each detector can be adjusted to obtain various distributions. Applications of random arrays include Monte Carlo calculations and coherent pattern recognition.
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With the exception of spatially multiplexed systems based on two-dimensional imaging, high-speed optical random number generators produce serial binary sequences that cannot be easily scaled to higher rates.
“With the exception of spatially multiplexed systems based on two-dimensional imaging [14,15], high-speed optical random number generators produce serial binary sequences that cannot be easily scaled to higher rates.”
From Scalable parallel physical random number generator based on a superluminescent LED (2011) · cites this paper as [14]
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References 3 · Cited by 26
- Authors
- Marron, J., Martino, A. J., & Morris, G. M.
- Affiliations
- University of Rochester (US)
- ORCID
- Martino, Anthony J.
- Venue
- Applied Optics
- Publisher
- Optica Publishing Group
- Published
- 1986-01-01
- Volume
- 25
- Issue
- 1
- Pages
- 26
- ISSN
- 0003-6935 (ISSN-L)
- 1539-4522
- OpenAlex
- W2083251780
- Cited by
- 26
- References
- 3
- Citations by year
- 2024: 1 · 2021: 1 · 2020: 1 · 2018: 2 · 2014: 1 · 2013: 2 · 2012: 1
- FWCI
- 1.83
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Applied Optics (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Acoustics and Ultrasonics › Random lasers and scattering media
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Optical Systems and Laser Technology
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Adaptive optics and wavefront sensing
- Keywords
- random number generation, laser speckle, clipping threshold, Monte Carlo calculations, speckle patterns
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