D.
V. G. L. N. Rao
Experimental
Laser Physics @ Umass Boston
Fellow of the American Physical Society, Distinguished Professor, University of Massachusetts
Department of Physics, UMass Boston, 100 Morrissey Blvd, Boston, MA 02125
Ph. (617) 287-6065, Fax. (617) 287-6053, Email, Research Group
Research Interests
Nonlinear Optics
Medical Image Processing
Nano and Bio
Photonics
Optical Data Storage
Optical Power Limiting & Laser
Eye
Protection
Patents
Patent Number – 5,757,525 dated May 26, 1998
All Optical Devices (includes switches, modulators and logic gates)
Patent Number – 5,854,710 dated Dec. 29, 1998
Optical
Fourier
Processing (includes edge enhancement, band pass filtering, noise
removal and pattern recognition)
Patent Number – 7,196,794 dated March 27, 2007
Systems and Methods for Limiting Power using Photo-induced
Anisotropy
Patent Number – 7,508,966 dated March 24, 2009
Optical Fourier Systems and Methods for Medical Image Processing
Patent Number – 7,507,504 dated March 24, 2009
Optical Storage System
Patent Number – 7,653,2327 dated January 26, 2010
Phase based digital image processing techniques for computer aided
diagnosis
Patent Number – 7,738,047 dated June 15, 2010
Systems and methods of all-optical Fourier phase contrast imaging using dye doped liquid crystals
Accessory for “Systems and methods of all-optical Fourier
phase contrast imaging using dye doped liquid crystals,” filed March 2010
Recent Professiional Acitivity;
Popular article on Fourier phase contrast and multimodal optical microscope,"Simple solutions to advance microscopy imaging,"
International Innovation, Research Meida Limited, 89 (2011).
- BioOptics World Facebook
(Ameoba movie)
Invited talk, “Nanophotoics and Biophotonics of photoanisotropic materials,” Laser Optics International Conference, St. Petersburg, Russia, June 28-July 2, 2010. Co-chair of the Nanophotonics and Biophotontics program committee. Chaired two sessions on July 1, 2010.
Selected Publications
Nonlinear
optics of nontoxic nanomaterials
with C.S.Yelleswarapu,Guiru Gu, Elshad Abdullayev, and Yuri Lvov
Optics Communications 34, 283, 438-441 (2010)
Common-path multimodal optical microscopy
with Chandra S. Yelleswarapu, Marla Tipping, Sri-Rajasekhar Kothapalli, and Alexey Veraksa
Opt. Lett., 34, 1243 (2009)
Enhancement of photoinduced polarization rotation in azobenzene polymer films
with Chandra S. Yelleswarapu, Yuanliang Chu, and Brian R. Kimball
Opt. Common., 282, 2259 (2009)
Coherent
population oscillations and superluminal light in a protein complex
with Chandra S. Yelleswarapu, Samir Laoui, and Reji Philip
Opt. Exp., 16, 3844 (2008)
Optical Fourier techniques for medical image processing and phase contrast imaging
with Chandra S. Yelleswarapu and Sri-Rajasekhar Kothapalli
Review Article Opt. Common., 281, 1876 (2008)
Passive
all-optical diode using asymmetric nonlinear absorption
with Reji Philip, M. Anija, and Chandra S. Yelleswarapu
Appl. Phys. Lett., 91, 1411181 (2007)
Completely
Passive Nonlinear Transmission System using Nonlinear Absorbing Medium and Azobenzene Films
with Chandra S. Yelleswarapu, and Brain R. Kimball
SPIE Proceedings, 6653, 42 (2007)
Slow light in bacteriorhodopsin solution using coherent population oscillations
with Chandra S. Yelleswarapu, Reji Philip, Francisco J. Aranda, and Brain R. Kimball
Opt. Lett., 32, 1788 (2007)
Phase
contrast imaging using photo-thermally induced phase
transitions in liquid crystals
with Chandra S. Yelleswarapu,
Sri-Rajasekhar Kothapalli, Yvonne Vaillancourt, Francisco J. Aranda,
and B. Kimball,
Appl. Phys. Lett., 89, 2111161 (2006)
All-optical
spatial filtering with power limiting materials
with
Chandra S. Yelleswarapu, Pengfei Wu, Sri-Rajasekhar Kothapalli, B.
Kimball, S. Sivasankara Sai,
R. Gowrishankar, and S. Sivaramakrishnan,
Optics Express 14, 1451 (2006).
Nonlinear optical image processing with bacteriorhodopsin
polymer
films
with Chandra S. Yelleswarapu, Pengfei Wu, and Sri-Rajasekhar
Kothapalli
Molecular Crystals & Liquid Crystals 446, 273 (2006).
The complex optical response of arrays of aligned, multi-walled
carbon nanotubes
with K. Gregorczyk, B. Kimball, J. Carlson, A. Pembroke, K. Kempa, Z. Ren, Chandra S. Yelleswarapu, T. Kempa, G. Benham, Y. Wang, Wenzhi Li, A. Herczynski, and J. Rybczynski
SPIE Proceedings 6321, 18 (2006).
Controllable snail-paced light in biological
bacteriorhodopsin
with Pengfei Wu,
Phys. Rev. Lett. 95,
253601 (2005). (pdf)
Spectral phase based medical image processing
with
Sri-Rajasekhar
Kothapalli Chandra S. Yelleswarapu, Sriram G. Naraharisetty,
and
Pengfei Wu,
Academic Radiology 12,
708 (2005). (pdf)
Nonlinear optical Fourier filtering technique for medical
image
processing
with Sri-Rajasekhar Kothapalli, Pengfei Wu, and Chandra S.
Yelleswarapu,
Journal of Biomedical Optics 10,
0440280 (2005). (pdf)
Medical image processing using transient Fourier holography
in
Bacteriorhodopsin films
with Sri-Rajasekhar Kothapalli, Pengfei Wu,
and Chandra S. Yelleswarapu,
Appl. Phys. Lett. 85,
5836 (2004). (pdf)
Light scattering of periodic beta-aligned carbon nanotubes
with Pengfei Wu, B. Kimball,
Phys. Rev. Lett. ***
(2004). (pdf)
Biological nano-ceramic materials for holographic data
storage
with Pengfei Wu, Murty Bhamidipati, and Melissa Coles,
Chem.
Phys. Lett. 400, 506
(2004). (pdf)
Self-diffraction in bacteriorhodopsin films for low power
optical
limiting
with D. Narayana Rao, Chandra S. Yelleswarapu, Sri-Rajasekhar
Kothapalli, B. Kimball,
Optics Express 11,
2848 (2003). (pdf)
Optical power limiting with photoinduced anisotropy of
azobenzene
films
with Pengfei Wu, Reji Phillip, Ramesh B. Laghumavarapu,
Janakiram Devulapalli, Brain R. Kimball,
Masato Nakashima, and Barry S.
DeCristofano,
Applied Optics 42,
4560 (2003). (pdf)
Photonic crystals based on periodic arrays of aligned carbon
nanotubes
with K. Kempa, B. R. Kimball, J. Rybczynski, Z. P. Huang, P.
F. Wu, D. Steeves, M. Sennett,
M. Giersig, D. L. Carnahan, D. Z. Wang,
J. Y. Lao, W. Z. Li, and Z. F. Ren,
Nano Letters 3,
13-18 (2003). (pdf)
Enhancement of photoinduce anisotropy and all-optical
switching in
Bacteriorhodopsin films
with Pengfei Wu, B. R. Kimball, M. Nakashima
and B. S. DeCristofano,
Appl. Phys. Lett. 81,
3888 (2002). (pdf)
Non-volatile grating in an azobenzene polymer with optimized
molecular reorientation
with P. Wu, B.R. Kimball, M. Nakashima, B.S.
DeCristofano,
Appl. Phys. Lett. 78,
1189 (2001). (pdf)
Self-protective diffraction limiting using the technique of
bi-photon holography
with P. Wu, B. R. Kimball, M. Nakashima, B. S.
DeCristofano,
Non-linear Optics 27,
287 (2001).
Processing of medical images using real-time optical fourier
processing
with Appaji Panchangam, K.V.L.N. Sastry, B.S. DeCristofano,
B.R. Kimball and M. Nakashima,
Medical Physics 28,
22-27 (2001).
Wavelength dependent studies of nonlinear absorption in
ZnmpTBP
uisng Z-scan technique
with N. Srinivas , B. R. Kimball, M. Nakashima
and B. S. DeCristofano,
J. Porphoyrins and
Pthalocyanines 5,
549-554
(2001).
Spatial light modulator with output sign control and self
protective diffraction limiting
with P. Wu, B. R. Kimball, M. Nakashima
and B. S. DeCristofano,
J. Opt. Soc. Am. B
17,
1548-1553 (2000).
Spatial light modulation with an azobenzene doped polymer by
use
of biphotonic holography
with P. Wu, B.R. Kimball, M. Nakashima and
B.S. DeCristofano,
Optics Letters 24,
841-843 (1999). (pdf)
Optical implementation of the wavelet tranform using a
Bacteriorhodopsin film as an optically addressed
spatial
light
modulator
with Joby Joseph, F.J. Aranda, B.S. DeCristofano, B.R.
Kimball and M. Nakashima,
Appl. Phys. Lett. 73,
1484 (1999).
Dispersion of the nonlinear absorption of copper
phthalocyanine in
a silica xerogel matrix through
the
visible spectrum
with E. Blanco,
D. Narayana Rao, F.J. Aranda, S. Tripathy, J.A. Akkara, R. Litran and
M. Ramirez-del-Solar,
J. Appl. Phys. 83,
3441-3443 (1998).
A comparative study of C 60 pthalocyanine and porphyrin for
optical limiting over the visible region
with D.Narayana Rao, E. Blanco
F. J. Aranda,
J. Sci. Ind. Res. India 57,
664 (1998).
Dispersion studies of non-linear absorption in C 60 using
Z-Scan
with D. Narayana Rao, J. A. Akkara and B.S.
DeCristofano,
Chem.
Phys. Lett. 297, 491
(1998).
Optical computing and information processing with a protein
complex
with Joby Joseph, F.J. Aranda and B.S. DeCristofano,
Optical
Memory and Neural Networks 6,
275 (1997).
Ultra fast relaxation times of Metalloporphyrins by time
resolved
degenerate four wave mixing with incoherent light
with D. Narayana
Rao, S. V. Rao, F. J. Aranda, M. Nakashima and J. A. Akkara,
J. Opt. Soc. Am. B
14,
2710-2715 (1997).
All-optical logic gates with Bacteriorhodopsin films
with
D.
Narayana Rao, F.J.Aranda, Z. Chen, J.A. Akkara, D.L. Kaplan, M.
Nakashima,
Opt. Comm. 127,
193
(1996).
Photonic
applications of Bacteriorhodopsin
with F. J.
Aranda,
Z. Chen, J. A. Akkara, D. L. Kaplan, M. Nakashima
J. Nonlinear Opt. Phys. 5,
331 (1996).
Third order nonlinear optical susceptibility of films of
polydiacetylene-containing polyamides and polyesters
with S. Fomine,
E. Adam, and T. Ogawa,
Polymer Bulletin 34,
169 (1995).
Nonlinear optical interactions in Bacteriorhodopsin using
Z-scan
with F. J. Aranda, C. L. Wong, P. Zhou, Z. Chen, J. A.
Akkara, D. L.
Kaplan and J. F. Roach,
Opt. Rev. 2, 204 (1995).
All-optical light modulation in Bacteriorhodopsin
films
with F.
J. Aranda, R. Garimella, N. F. McCarthy, D. Narayana Rao, Z. Chen, J.
A. Akkara, D. L. Kaplan and J. F. Roach,
Appl. Phys.
Lett. 67, 599 (1995).
Biomimetic membrane and interface templates for enzyme-based
polymerization reactions
with J. A. Akkara, M. Ayyagari, F. Bruno, L.
Samuelson, V.T. John, C. Karayigitoglu, S. Tripathy, K.A. Marx and D.L.
Kaplan
Biomimetics 2,
331 (1994).
Third-order nonlinear optical interactions in
Tetrabenzporphyrins
with F. J. Aranda, D. E. Remy and F. J. Roach
Int. J. Nonlinear Opt. 3,
511 (1994).
Third-order nonlinear optical interactions of C 60 and C
70
with F.J. Aranda, J. F. Roach and P. Tayebati,
J. Appl. Phys. 73,
7949
(1993).
Mirrorless all-optical bistability in
Bacteriorhodopsin
with F.
J. Aranda, B. J. Wiley, J. A. Akkara, D. L. Kaplan and J. F.
Roach,
Appl.
Phys. Lett. 63, 1489
(1993).
Third-order optical nonlinearities of Benzoporphyrins and a
Platinum Poly-yne
with S. Guha, K. Kang, P. Porter, F. J. Aranda, D.
E. Remy and J. F. Roach,
Opt. Lett. 17,
264 (1992). (pdf)
Third-order nonlinear optical interactions of some
Benzoporphyrins
with F. J. Aranda, D. E. Remy, and J. F. Roach,
Appl.
Phys. Lett. 58, 1241
(1991).
Inverse-scattering transform of stimulated Raman and
Brillouin
scattering in the quasi-steady state regime
with D. N. Ghosh Roy,
Phys. Rev. Lett. 66,
2308
(1991).
Self-focusing in polymers
with James Bickford, A. Sheri and
Muthu Kumar
J. Polymer Science Part C 28,
247 (1990).
Optical pulse narrowing by backward transient stimulated
Brillouin scattering
with D. N. Ghosh Roy,
J.
Appl. Phys. 59, 332
(1986).
Brillouin scattering in thin film waveguides
with S. Janaki,
P. Rao, and N. Swamy,
Appl. Phys. Lett. 44,
1025 (1984).
Optical pulse compression in a cholesteric liquid
crystal
with D. N. Ghosh Roy and Harold Bronk,
Appl. Phys.
Lett. 39, 474 (1981).
Pretransitional behavior of self-focusing in nematic liquid
crystals
with S. Jayaraman,
Phys. Rev. A
10, 2457
(1974).
Stimulated Raman scattering in a liquid crystal
with D.K.
Agraljal,
Phys. Lett. A 37,
383 (1971).
Stimulated Brillouin scattering in a liquid crystal
Phys.
Lett. A 32, 533 (1970).
Brillouin scattering of light in liquid crystal
with G.
Durand,
Phys. Lett. A 27,
455 (1968).
Laser induced resistivity changes in Silicon
J. Appl. Phys. 39,
4853 (1968).
Quadrupole interactions in Chrysoberyl
with L. Rao,
Phys.
Rev. 160, 274
(1967).
Calculations of electric field gradients and g-factors for a
single crystal of paramagnetic CUC12 2H20
with A. N. Murty,
Phys.
Rev. 132, 961 (1963).
Electron spin resonance of an irradiated single crystal of
urea oxalate
with W. Gordy,
J. Chem. Phys. 35,
362 (1961).
Molecular quadrupole moment of Nitric oxide
Nature 186,
881
(1960).
SPIE
and Conference Proceedings
Book Chapters
Holography in Bacteriorhodopsin Films for Medical Applications
with Chandra S Yelleswarapu and Francisco J Aranda
New Directions in Holography and Speckles, pp 263 – 279, American Scientific Publishers, 2008, edited by H. John Caulfield and Chandra S. Vikram.
Nonlinear Optical Properties of Bioengineered Materials
with J.A. Akkara, F.J. Aranda, and V.T. John,
Electrical and Optical Polymer Systems – Fundamentals, Methods and Applications. Ed. D.L. Wise, G. Wyneck, D. Trantolo, T. Cooper, and J. Gresser, (Marcel Dekker, New York, 1998) pp. 453-465.
Optical Information Processing with Bacteriorhodopsin
with F.J. Aranda, D. Narayana Rao and Joby Joseph
Photonic Polymer Systems, Fundamentals, Methods and Applications, Ed. D.L. Wise, G. Wyneck, D. Trantolo, T. M.Cooper, and J. Gresser, (Marcel Dekker, New York, 1998) pp. 633-691.
Sensor Protection from Lasers
with D.J. Trantolo, J.D. Gresser, D.L. Wise, G.J. Kowalski, and G.E. Wnek
Electrical and Optical Polymer Systems: Fundamentals, Methods and Applications, (D.L. Wise, D.J. Trantolo, T.M. Cooper, G.E. Wnek, J.D. Gresser, Eds.), Marcel Dekker. 1998, pp 537-569.
Education
Andhra University, Waltair, India, B.Sc. (Honors) 1953
M.Sc., 1954; D.Sc., 1958
Positions Held
Lecturer in Physics, Andhra University, 1957-1959;
1961-1963.
Research Associate, Physics Department, Duke University,
Durham , North Carolina, 1959-1961.
Senior Scientist, Solid State Physics Laboratory, Delhi,
India 1963-1966; Leader of Magnetic Resonanance Group.
Research Physicist, Maser Optics, Inc. July 1966-April,1968.
Manager, Research Division, Spacerays, Inc., April
1968-August 1968.
Associate Professor, University of Massachusets at Boston,
September 1968-1975.
Professor of Physics, University of Massachusetts at Boston,
1975 - to the present
Chairman, Physics Department 1978-1980; Graduate Program
Director, Applied
Physics Graduate Program 1986 - 1988, 1992 – 1995,
1997- to the present
Other Positions Or Fellowships
(Held concurrently with those above)
Research Fellow, Division of Engineering and Applied
Physics, Harvard University 1967-1969.
Visiting Research Professor of Physics, I.I.T., Madras 1983.
Adjunct Professor of Physics, University of Masschusetts
Amherst 1991 -
Adjunct Professor of Physics, University of Massachusetts
Lowell 1994 -
Links
Laser
Technology
Developing
Technology
