Richard I. Joseph

Jacob Suter Jammer Professor

 

 

Ph.D. 1962,       Harvard University

B.S. 1957,         The City College of the City University of New York

 

Contact Info:     Phone - (410) 516-7005

                        Fax     - (410) 516-5566

                        E-mail – rjoseph@jhu.edu

 

Web: 

www.ece.jhu.edu/faculty/joseph.html

 

 

 

Electromagnetism is ubiquitous. Professor Joseph’s research interests involve electromagnetic theory, in particular, applied optics.  Areas under active study involve the propagation and scattering of electromagnetic waves in environments that may be nonlinear or anisotropic or inhomogeneous or rough.  By way of illustration, an accurate description of the spatial distribution and lifetime of ocean sunglint is necessary if one is to be able to use overhead imagery to observe faint objects moving near the sea surface.

 

The sea surface can be modeled as being single valued and composed of a continuous collection of smooth facets with continuous first derivatives between adjacent facets. Assuming that each facet is large with respect to the wavelength of radiation, geometrical optics can be used to describe the interaction of radiation with any given facet. Statistical methods can then be used to calculate the density of specular points for arbitrary look angles and sea surface conditions. The results of detailed calculation show good agreement with what is observed, e.g. the glint corridor one sees as the sun approaches the horizon. A wide variety of practical problems can be addressed.

 

 

Selected Publications

 

D.N.Christodoulides, T.H,Cosleun and R.I.Joseph, Incoherent Spatial Solitons in Saturable Nonlinear Media, Optics Letters 22, 1080 (1997).

 

D.E.Freund, R.I.Joseph, D.J.Donohue and K.T.Constantikes, Numerical Computations of the Rough Sea Surface Emissivity Using the Interaction Probability Density, J. of the Optical Soc. Am. A14,1836(1997).

 

M.E.Thomas, S.K.Andersson, R.M.Sova and R.I.Joseph , Frequency and Temperature Dependence of the Refractive Index of Sapphire, Infrared Phys. and Tech., 39, 235 (1998).

 

R.I.Joseph, P.S.Wayland and M.E.Thomas, Emissivity of a Uniaxial Crystalline Slab, Proc. SPIE Window and Dome Technologies and Materials VI, 3705, 316 (1999).