Interferometric Optics

Interferometric Optics

N-Slit Laser Interferometer
Interferometric Optics introduces its N-Slit Laser Interferometer (NSLI) applicable to:

Assessment of transmission gratings and optical surfaces
Detection of clear air turbulence (CAT)
Interferometric imaging
Interferometric microdensitometry
Interferometric microscopy
N-slit interference
N-slit interferometry
Secure interferometric communications

Based on multiple-prism beam expansion and digital detection the N-slit interferometer allows for the rapid interferometric characterization of transmission optical surfaces in general. A significant advance over traditional point-by-point incoherent microdensitometers and point-by-point incoherent microscopes.

Specific applications include the rapid characterization of:

Arrays of micro holes and/or micro nozzles
Biomedical and organic molecular arrays
Crystalline surfaces
Molecular, and digital, imaging surfaces
Optical surfaces
Textiles
Transmission gratings

Spatial resolution depends on the selected CCD or CMOS detector. As explained in the references, the resolution provided by the detector array can be enhanced, via quantum interferometric calculations, into the submicrometer or nanometer regime thus making the transition from microscope to nanoscope.

Literature

F. J. Duarte, Quantum Optics for Engineers, 2nd Edn (CRC, New York, 2024).

F. J. Duarte and I. E. Olivares, N-slit quantum interferometers in the nanometer domain, Appl. Phys. B 129, 88 (2023).

F. J. Duarte, Fundamentals of Quantum Entanglement, 2nd Edn (Institute of Physics, Bristol, 2022).

F. J. Duarte, Fundamentals of Quantum Entanglement (Institute of Physics, Bristol, 2019).
F. J. Duarte, Secure space-to-space interferometric communications and its nexus to the physics of quantum entanglement, Appl. Phys. Rev. 3, 041301 (2016).
F. J. Duarte et al., Tunable Laser Applications, 3rd Ed. (CRC, New York, 2016).

F. J. Duarte and T. S. Taylor, Quantum entanglement physics secures space-to-space interferometric communications, Laser Focus World 51(4), 54-58 (2015).

F. J. Duarte, T. S. Taylor, A. M. Black, and I. E. Olivares, Diffractive patterns superimposed over propagating N-slit interferograms, J. Mod. Opt. 60, 136-140 (2013).
F. J. Duarte, T. S. Taylor, A. M. Black, W. E. Davenport, and P. G. Varmette, N-slit interferometer for secure free-space optical communications: 527 m intra interferometric path length , J. Opt. 13, 035710 (2011).
F. J. Duarte, T. S. Taylor, A. B. Clark, and W. E. Davenport, The N-slit interferometer: an extended configuration, J. Opt. 12, 015705 (2010).
F. J. Duarte, Interferometric imaging, in Tunable Laser Applications, 2nd Edition, F. J. Duarte (Ed.) (CRC, New York, 2009) Chapter 12.
F. J. Duarte, Secure interferometric communications in free space: enhanced sensitivity for propagation in the metre range, J. Opt. A: Pure Appl. Opt. 7, 73-75 (2005).
F. J. Duarte, Comment on "Reflection, refraction, and multislit interference," Eur. J. Phys. 25, L57-L58 (2004).
F. J. Duarte, Tunable Laser Optics (CRC, New York, 2015) Chapter 2.
F. J. Duarte, Secure interferometric communications in free space, Opt. Commun. 205, 313-319 (2002).
F. J. Duarte, Interference of two independent sources, Am. J. Phys. 66, 662-663 (1998).
F. J. Duarte, Interference, diffraction, and refraction, via Dirac's notation, Am. J. Phys. 65, 637-640 (1997).
F. J. Duarte, Interferometric imaging, in Tunable Laser Applications, F. J. Duarte (Ed.) (Marcel-Dekker, New York, 1995) Chapter 5.
F. J. Duarte, On a generalized interference equation and interferometric measurements, Opt. Commun. 103, 8-14 (1993).
F. J. Duarte, Electro-optical interferometric microdensitometer system, US Patent 5255069 (1993).
F. J. Duarte, Dispersive dye lasers, in High Power Dye Lasers, F. J. Duarte (Ed.) (Springer-Verlag, Berlin, 1991) Chapter 2.
F. J. Duarte and D. J. Paine, Quantum mechanical description of N-slit interference phenomena, in Proceedings of the International Conference on Lasers '88, R. C. Sze and F. J. Duarte (Eds.) (STS, McLean, Va, 1989) pp. 42-47.
F. J. Duarte, Beam shaping with telescopes and multiple-prism beam expanders, J. Opt. Soc. Am. A 4, P30 (1987).

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Published on the 13th of September, 2009; updated on the 13th of August, 2026.