Ashok Kumar

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Produções bibliográficas

• PRABHAKAR, SHASHI ; GANGI REDDY, SALLA ; AADHI, A. ; KUMAR, ASHOK ; CHITHRABHANU, P. ; SAMANTA, G.K. ; SINGH, R.P. . Spatial distribution of spontaneous parametric down-converted photons for higher order optical vortices. Optics Communications (Print) , v. 326, p. 64-69, 2014.

• REDDY, SALLA GANGI ; PRABHAKAR, SHASHI ; AADHI, A. ; KUMAR, ASHOK ; SHAH, MEGH ; SINGH, R. P. ; SIMON, R. . Measuring the Mueller matrix of an arbitrary optical element with a universal SU(2) polarization gadget. Journal of the Optical Society of America. A, Optics, Image Science, and Vision , v. 31, p. 610, 2014.

• REDDY, SALLA GANGI ; PRABHAKAR, SHASHI ; KUMAR, ASHOK ; BANERJI, J. ; SINGH, R. P. . Higher order optical vortices and formation of speckles. Optics Letters , v. 39, p. 4364, 2014.

• 2013 VAITY, PRAVIN ; KUMAR, ASHOK ; SINGH, R P . Manifestation of coherence decay of optical vortices on scattering through photorefractive SBN crystal. Journal of Optics , v. 15, p. 025711, 2013.

• 2013 KEDIA, SUNITA ; KUMAR, ASHOK ; SINGH, R. P . Propagation of vortex beams through self-assembled photonic crystal. Journal of Experimental Nanoscience , v. 8, p. 249-253, 2013.

• REDDY, SALLA GANGI ; KUMAR, ASHOK ; PRABHAKAR, SHASHI ; SINGH, R. P. . Experimental generation of ring-shaped beams with random sources. Optics Letters , v. 38, p. 4441, 2013.

• KUMAR, ASHOK ; VAITY, PRAVIN ; BHATT, JITENDRA ; SINGH, R.P. . Stability of higher order optical vortices produced by spatial light modulators. Journal of Modern Optics (Print) , v. 60, p. 1696-1700, 2013.

• 2012 KUMAR, ASHOK ; BANERJI, J. ; SINGH, R. P. . Hanbury Brown-Twiss-type experiments with optical vortices and observation of modulated intensity correlation on scattering from rotating ground glass. Physical Review. A, Atomic, Molecular, and Optical Physics (Online) , v. 86, p. 013825, 2012.

• 2012 KEDIA, SUNITA ; KUMAR, ASHOK ; SINGH, R. P. . Investigation of local structural properties of self-assembled photonic crystals by optical diffraction. Applied Physics. B, Lasers and Optics (Print) , v. 108, p. 903-907, 2012.

• 2011 KUMAR, ASHOK ; VAITY, PRAVIN ; SINGH, R. P. . Crafting the core asymmetry to lift the degeneracy of optical vortices. Optics Express , v. 19, p. 6182, 2011.

• 2011 KUMAR, ASHOK ; PRABHAKAR, SHASHI ; VAITY, PRAVIN ; SINGH, R. P. . Information content of optical vortex fields. Optics Letters , v. 36, p. 1161, 2011.

• 2011 PRABHAKAR, SHASHI ; KUMAR, ASHOK ; BANERJI, J. ; SINGH, R. P. . Revealing the order of a vortex through its intensity record. Optics Letters , v. 36, p. 4398, 2011.

• 2011 KUMAR, ASHOK ; SINGH, R.P. . Experimental and theoretical investigation of loss of coherence on scattering of a beam with helical wavefront. Optics Communications (Print) , v. 284, p. 1510-1516, 2011.

• 2011 KUMAR, ASHOK ; VAITY, PRAVIN ; BANERJI, J. ; SINGH, R.P. . Making an optical vortex and its copies using a single spatial light modulator. Physics Letters. A (Print) , v. 375, p. 3634-3640, 2011.

• 2011 KUMAR, A. . Photon correlation spectroscopy: A comparative study of optical vortex and Gaussian beam. Asian Journal of Physics , v. 20, p. 251, 2011.

• 2010 KUMAR, ASHOK ; KRISHNA, YEDHU ; SINGH, R.P. . Engineering the size of dark core of an optical vortex. Optics and Lasers in Engineering , v. 48, p. 276-281, 2010.

• 2010 KUMAR, ASHOK ; VAITY, PRAVIN ; SINGH, R.P. . Diffraction characteristics of optical vortex passing through an aperture-iris diaphragm. Optics Communications (Print) , v. 283, p. 4141-4145, 2010.

• 2010 KUMAR, ASHOK ; BANERJI, J. ; SINGH, R. P. . Intensity correlation properties of high-order optical vortices passing through a rotating ground-glass plate. Optics Letters , v. 35, p. 3841, 2010.