Browse by Fellow

More, Deepak ; Rajesh, Ch. ; Lad, Amit D. ; Kumar, G. Ravindra ; Mahamuni, Shailaja (2010) Two photon absorption in Mn²⁺-doped ZnSe quantum dots Optics Communications, 283 (10). pp. 2150-2154. ISSN 0030-4018

Habara, Hideaki ; Ohta, Kazuhide ; Tanaka, Kazuo A. ; Kumar, G. Ravindra ; Krishnamurthy, M. ; Kahaly, Subhendu ; Mondal, Sudipta ; Bhuyan, Manoj Kumar ; Rajeev, R. ; Zheng, Jian (2010) Direct, absolute, and in situ measurement of fast electron transport via cherenkov emission Physical Review Letters, 104 (5). 055001_1-055001_4. ISSN 0031-9007

Mondal, S. ; Lad, Amit D. ; Ahmed, Saima ; Narayanan, V. ; Pasley, J. ; Rajeev, P. P. ; Robinson, A. P. L. ; Kumar, G. Ravindra (2010) Doppler spectrometry for ultrafast temporal mapping of density dynamics in laser-induced plasmas Physical Review Letters, 105 (10). 105002_1-105002_4. ISSN 0031-9007

Prem Kiran, P. ; Bagchi, Suman ; Arnold, Cord L. ; Krishnan, Siva Rama ; Kumar, G. Ravindra ; Couairon, Arnaud (2010) Filamentation without intensity clamping Optics Express, 18 (20). pp. 21504-21510. ISSN 1094-4087

Prem Kiran, P. ; Bagchi, Suman ; Krishnan, Siva Rama ; Arnold, C. L. ; Kumar, G. Ravindra ; Couairon, A. (2010) Focal dynamics of multiple filaments: Microscopic imaging and reconstruction Physical Review A, 82 (1). 013805_1-013805_8. ISSN 1050-2947

Kumar, G. Ravindra (2009) Intense, ultrashort light and dense, hot matter Pramana - Journal of Physics, 73 (1). pp. 113-155. ISSN 0304-4289

Kahaly, Subhendu ; Mondal, S. ; Kumar, G. Ravindra ; Sengupta, S. ; Das, A. ; Kaw, P. K. (2009) Polarimetric detection of laser induced ultrashort magnetic pulses in overdense plasma Physics of Plasmas, 16 (4). 043114_1-043114_7. ISSN 1070-664X

Bagchi, S. ; Prem Kiran, P. ; Bhuyan, M. K. ; Bose, S. ; Ayyub, P. ; Krishnamurthy, M. ; Kumar, G. Ravindra (2008) Hotter electrons and ions from nano-structured surfaces Laser and Particle Beams, 26 (2). pp. 259-264. ISSN 0263-0346

Sinha, Jaivardhan ; Mohan, Shyam ; Banerjee, S. S. ; Kahaly, Subhendu ; Kumar, G. Ravindra (2008) Mapping giant magnetic fields around dense solid plasmas by high-resolution magneto-optical microscopy Physical Review E, 77 (4). 046118_1-046118_7. ISSN 1063-651X

Kahaly, Subhendu ; Yadav, S. K. ; Wang, W. M. ; Sengupta, S. ; Sheng, Z. M. ; Das, A. ; Kaw, P. K. ; Kumar, G. Ravindra (2008) Near-complete absorption of intense, ultrashort laser light by sub-λ gratings Physical Review Letters, 101 (14). 145001_1-145001_4. ISSN 0031-9007

Lad, Amit D. ; Prem Kiran, P. ; More, Deepak ; Kumar, G. Ravindra ; Mahamuni, Shailaja (2008) Two-photon absorption in ZnSe and ZnSe/ZnS core/shell quantum structures Applied Physics Letters, 92 (4). 043126_1-043126_3. ISSN 0003-6951

Lad, Amit D. ; Prem Kiran, P. ; Kumar, G. Ravindra ; Mahamuni, Shailaja (2007) Three-photon absorption in ZnSe and ZnSe/ZnS quantum dots Applied Physics Letters, 90 (13). 133113_1-133113_3. ISSN 0003-6951

Rajeev, P. P. ; Kahaly, S. ; Bagchi, S. ; Bose, S. ; Kiran, P. P. ; Ayyub, P. ; Kumar, G. Ravindra (2006) Role of prepulses in the interaction of intense, ultrashort lasers with "structured" surfaces Journal de Physique IV - Proceedings, 133 . pp. 533-536. ISSN 1155-4339

Prem Kiran, P. ; Raghunath Reddy, D. ; Dharmadhikari, A. K. ; Maiya, Bhaskar G. ; Kumar, G. Ravindra ; Narayana Rao, D. (2006) Contribution of two-photon and excited state absorption in 'axial-bonding' type hybrid porphyrin arrays under resonant electronic excitation Chemical Physics Letters, 418 (4-6). pp. 442-447. ISSN 0009-2614

Sandhu, A. S. ; Kumar, G. Ravindra ; Sengupta, S. ; Das, A. ; Kaw, P. K. (2006) Real-time study of fast-electron transport inside dense hot plasmas Physical Review E, 73 (3). 036409_1-036409_4. ISSN 1063-651X

Sengupta, S. ; Sandhu, A. S. ; Kumar, G. R. ; Das, A. ; Kaw, P. K. (2005) Short laser pulse induced generation of hot electrons and their anomalous stopping in overdense plasmas Nuclear Fusion, 45 (11). pp. 1377-1385. ISSN 0029-5515

Prem Kiran, P. ; Raghunath Reddy, D. ; Maiya, Bhaskar G. ; Dharmadhikari, Aditya K. ; Kumar, G. Ravindra ; Narayana Rao, D. (2005) Nonlinear absorption properties of 'axial-bonding' type tin(IV) tetratolylporphyrin based hybrid porphyrin arrays Optics Communications, 252 (1-3). pp. 150-161. ISSN 0030-4018

Sandhu, A. S. ; Kumar, G. R. ; Sengupta, S. ; Das, A. ; Kaw, P. K. (2005) Laser-pulse-induced second-harmonic and hard x-ray emission: role of plasma-wave breaking Physical Review Letters, 95 (2). 025005_1-025005_4. ISSN 0031-9007

Dharmadhikari, J. A. ; Dharmadhikari, A. K. ; Kumar, G. Ravindra (2005) High-contrast interference pattern of amplified spontaneous emission from dyes under transient grating excitation Optics Letters, 30 (7). pp. 765-767. ISSN 0146-9592

Sandhu, Arvinder S. ; Dharmadhikari, A. K. ; Kumar, G. Ravindra (2005) Time resolved evolution of structural, electrical, and thermal properties of copper irradiated by an intense ultrashort laser pulse Journal of Applied Physics, 97 (2). 023526_1-023526_5. ISSN 0021-8979

Kodama, R. ; Sentoku, Y. ; Chen, Z. L. ; Kumar, G. Ravindra ; Hatchett, S. P. ; Toyama, Y. ; Cowan, T. E. ; Freeman, R. R. ; Fuchs, J. ; Izawa, Y. ; Key, M. H. ; Kitagawa, Y. ; Kondo, K. ; Matsuoka, T. ; Nakamura, H. ; Nakatsutsumi, M. ; Norreys, P. A. ; Norimatsu, T. ; Snavely, R. A. ; Stephens, R. B. ; Tampo, M. ; Tanaka, K. A. ; Yabuuchi, T. (2004) Plasma devices to guide and collimate a high density of MeV electrons Nature, 432 . pp. 1005-1008. ISSN 0028-0836

Nikesh, V. V. ; Dharmadhikari, Aditya ; Ono, Hiroshi ; Nozaki, Shinji ; Kumar, G. Ravindra ; Mahamuni, Shailaja (2004) Optical nonlinearity of monodispersed, capped ZnS quantum particles Applied Physics Letters, 84 (23). pp. 4602-4604. ISSN 0003-6951

Kumar, G. Ravindra ; Dharmadhikari, A. K. ; Roy, Basudev ; Roy, Sukhdev ; Dharmadhikari, J. A. ; Mishra, Alpana (2004) Higher-order optical nonlinearities in 4'-dimethylamino-N-methyl-4-stilbazolium tosylate Optics Communications, 235 (1-3). pp. 195-200. ISSN 0030-4018

Rajeev, P. P. ; Kumar, G. Ravindra (2003) Polarization independent hot electron production from modulated solid surfaces Optics Communications, 222 (1-6). pp. 9-15. ISSN 0030-4018

Rajeev, P. P. ; Taneja, P. ; Ayyub, P. ; Sandhu, A. S. ; Kumar, G. Ravindra (2003) Metal nanoplasmas as bright sources of hard x-ray pulses Physical Review Letters, 90 (11). 115002_1-115002_4. ISSN 0031-9007

Dharmadhikari, J. A. ; Dharmadhikari, A. K. ; Mishra, A. ; Kumar, G. Ravindra (2003) Amplified spontaneous emission enhanced forward stimulated Raman scattering in dye solutions Applied Physics B: Lasers and Optics, 76 (7). pp. 755-759. ISSN 0946-2171

Sandhu, A. S. ; Dharmadhikari, A. K. ; Rajeev, P. P. ; Kumar, G. R. ; Sengupta, S. ; Das, A. ; Kaw, P. K. (2002) Laser-generated ultrashort multimegagauss magnetic pulses in plasmas Physical Review Letters, 89 (22). 225002_1-225002_4. ISSN 0031-9007

Prem Kiran, P. ; Naga Srinivas, N. K. M. ; Raghunath Reddy, D. ; Maiya, Bhaskar G. ; Dharmadhikari, Aditya ; Sandhu, Arvinder S. ; Kumar, G. Ravindra ; Narayana Rao, D. (2002) Heavy atom effect on nonlinear absorption and optical limiting characteristics of 5,10,15,20-(tetratolyl) porphyrinato phosphorus (V) dichloride Optics Communications, 202 (4-6). pp. 347-352. ISSN 0030-4018

Pratap Singh, Amit ; Kapoor, Avinashi ; Tripathi, K. N. ; Kumar, G. Ravindra (2002) Effect of polarization on the surface damage morphology of GaAs single crystal during irradiation with picosecond laser pulses Optics & Laser Technology, 34 (1). pp. 23-26. ISSN 0030-3992

Pratap Singh, Amit ; Kapoor, Avinashi ; Tripathi, K. N. ; Kumar, G. Ravindra (2002) Laser damage studies of silicon surfaces using ultra-short laser pulses Optics & Laser Technology, 34 (1). pp. 37-43. ISSN 0030-3992

Prem Kiran, P. ; Raghunath Reddy, D. ; Maiya, Bhaskar G. ; Dharmadhikari, Aditya K. ; Kumar, G. Ravindra ; Desai, Narayana Rao (2002) Enhanced optical limiting and nonlinear absorption properties of azoarene-appended phosphorus (V) tetratolylporphyrins Applied Optics, 41 (36). pp. 7631-7636. ISSN 0003-6935

Rajeev, P. P. ; Banerjee, S. ; Sandhu, A. S. ; Issac, R. C. ; Tribedi, L. C. ; Kumar, G. R. (2002) Role of surface roughness in hard-x-ray emission from femtosecond-laser-produced copper plasmas Physical Review A, 65 (5). 052903_1-052903_5. ISSN 1050-2947

Venugopal Rao, S. ; Naga Srinivas, N. K. M. ; Narayana Rao, D. ; Giribabu, L. ; Maiya, Bhaskar G. ; Philip, Reji ; Kumar, G. Ravindra (2001) Excited state dynamics in tetra tolyl porphyrins studied using degenerate four wave mixing with incoherent light and ps pulses Optics Communications, 192 (1-2). pp. 123-133. ISSN 0030-4018

Sengupta, Parijat ; Balaji, J. ; Mukherjee, S. ; Philip, R. ; Kumar, G. Ravindra ; Maiti, Sudipta (2001) Determination of the absolute two-photon absorption cross section of tryptophan Proceedings of SPIE, 4262 (41). pp. 336-339. ISSN 0277-786X

Venugopal Rao, S. ; Naga Srinivas, N. K. M. ; Narayana Rao, D. ; Giribabu, L. ; Maiya, Bhaskar G. ; Philip, Reji ; Kumar, G. Ravindra (2000) Studies of third-order optical nonlinearity and nonlinear absorption in tetra tolyl porphyrins using degenerate four wave mixing and Z-scan Optics Communications, 182 (1-3). pp. 255-264. ISSN 0030-4018

Philip, Reji ; Kumar, G. Ravindra ; Mathur, P. ; Ghose, S. (2000) Nonlinear optical properties of mixed Mo/Fe, mixed chalcogen clusters Cp₂Mo₂Fe₂STe(CO)₇ and Cp₂Mo₂Fe₂(μ3-S)(μ3-Te)(μ2-SPh)(μ3-H)(CO)₅ Optics Communications, 178 (4-6). pp. 469-475. ISSN 0030-4018

Banerjee, S. ; Mathur, Deepak ; Kumar, G. Ravindra (2000) Propensity of molecules to spatially align in intense light fields Physical Review A, 63 (4). 045401_1-045401_4. ISSN 1050-2947

Philip, Reji ; Kumar, G. Ravindra ; Sandhyarani, N. ; Pradeep, T. (2000) Picosecond optical nonlinearity in monolayer-protected gold, silver, and gold-silver alloy nanoclusters Physical Review B, 62 (19). pp. 13160-13166. ISSN 0163-1829

Sengupta, P. ; Balaji, J. ; Banerjee, S. ; Philip, R. ; Kumar, G.Ravindra ; Maiti, S. (2000) Sensitive measurement of absolute two-photon absorption cross sections Journal of Chemical Physics, 112 (112). 9201_1-9201_5. ISSN 0021-9606

Banerjee, S. ; Kumar, G. Ravindra ; Tribedi, L. C. (2000) X-ray emission from aluminium under intense, ultrashort irradiation European Physical Journal D, 11 (2). pp. 295-300. ISSN 1434-6060

Philip, Reji ; Kumar, G. Ravindra ; Mathur, P. ; Ghosh, S. (1999) Non-linear optical properties of the mixed-metal mixed-chalcogen clusters [Fe₂(CO)₆{μ-SeC(Ph)=C(Se)}{(OEt)C=Cr(CO)₅}] and [Fe₂(CO)₆Se₂{μ-(CO)₃Cr(η⁵-C₅H(CH₂Ph)(Ph)(OEt)}] Chemical Physics Letters, 313 (5-6). pp. 719-724. ISSN 0009-2614

Banerjee, S. ; Kumar, G. Ravindra ; Mathur, Deepak (1999) Dynamic and geometric alignment of CS₂ in intense laser fields of picosecond and femtosecond duration Physical Review A, 60 (5). R3369-R3372. ISSN 1050-2947

Banerjee, S. ; Kumar, G. Ravindra ; Mathur, D. (1999) Spatial effects in the intense field ionization of N₂ molecules by femtosecond-duration laser pulses Journal of Physics B: Atomic, Molecular and Optical Physics, 32 (13). L305-L315. ISSN 0953-4075

Philip, Reji ; Ravikanth, M. ; Kumar, G. Ravindra (1999) Studies of third order optical nonlinearity in iron (III) phthalocyanine μ-oxo dimers using picosecond four-wave mixing Optics Communications, 165 (1-3). pp. 91-97. ISSN 0030-4018

Kumar, G. Ravindra ; Banerjee, S. ; Mathur, Deepak (1999) Single and multiple ionization of N2 molecules by intense light fields of femtosecond duration Pramana - Journal of Physics, 52 (4). pp. 421-434. ISSN 0304-4289

Banerjee, S. ; Kumar, G. Ravindra ; Mathur, Deepak (1999) Intensity-selective, field-induced dissociative ionization of CS₂ by femtosecond-duration light pulses Journal of Physics B: Atomic, Molecular and Optical Physics, 32 (17). p. 4277. ISSN 0953-4075

Banerjee, S. ; Kumar, G. Ravindra ; Mathur, D. (1999) Multiple ionization of N₂ in intense, linearly and circularly polarized light fields Physical Review A, 60 (1). R25-R28. ISSN 1050-2947

Mathur, Pradeep ; Ghose, Sanjukta ; Munkir Hossain, Md. ; Satyanarayana, C. V. V. ; Chadha, Raj K. ; Banerjee, Sudeep ; Kumar, G. Ravindra (1998) Synthesis, characterisation and nonlinear optical properties of tetrahedral clusters Cp₂Mo₂ME(CO)₇, (M=Fe, Ru, Os; E=S, Se) Journal of Organometallic Chemistry, 568 (1-2). pp. 197-204. ISSN 0022-328X

Kumar, G. Ravindra ; Ravikanth, M. ; Banerjee, Sudeep ; Sevian, Armen (1997) Third order optical nonlinearity in basket handle porphyrins-picosecond four-wave mixing and excited state dynamics Optics Communications, 144 (4-6). pp. 245-251. ISSN 0030-4018

Vijayalakshmi, K. ; Safavan, C. P. ; Kumar, G. Ravindra ; Mathur, Deepak (1997) On the ionization and dissociation of NO₂ by short intense laser pulses Chemical Physics Letters, 270 (1-2). pp. 37-44. ISSN 0009-2614

Mathur, D. ; Bhardwaj, V. R. ; Gross, P. ; Kumar, G. Ravindra ; Rajgara, F. A. ; Safvan, C. P. ; Vijayalakshmi, K. (1997) Angular distributions of the products of dissociative ionization of molecules by intense laser fields Laser Physics, 7 (3). pp. 829-838. ISSN 1054-660X

Mathur, D. ; Bhardwaj, V. R. ; Kumar, G. Ravindra ; Rajgara, F. A. ; Safvan, C. P. (1997) Dissociation dynamics of highly-charged molecules in intense laser fields Physica Scripta, 1997 (T73). pp. 254-258. ISSN 0031-8949

Mathur, Pradeep ; Ghose, Sanjukta ; Munkir Hossain, Md. ; Satyanarayana, C. V. V. ; Kumar, G. Ravindra ; Banerjee, Sudeep ; Hitchcock, Peter B. ; Nixon, John F. (1997) Phosphaalkyne-bridged clusters: Synthesis, characterization, and nonlinear optical properties of Fe₄Se₂(μ-Se₂PCBu^t)(CO)₁₁ Organometallics, 16 (17). pp. 3815-3818. ISSN 0276-7333

Sevian, Armen ; Ravikanth, M. ; Kumar, G. Ravindra (1996) Optical limiting in short chain basket handle porphyrins Chemical Physics Letters, 263 (1-2). pp. 241-246. ISSN 0009-2614

Safvan, C. P. ; Bhardwaj, V. R. ; Kumar, G. Ravindra ; Mathur, Deepak ; Rajgara, F. A. (1996) Single and multiple ionization of CS₂ in intense laser fields: wavelength dependence and energetics Journal of Physics B: Atomic, Molecular and Optical Physics, 29 (14). pp. 3135-3149. ISSN 0953-4075

Safvan, C. P. ; Vijayalakshmi, K. ; Rajgara, F. A. ; Kumar, G. Ravindra ; Marathe, V. R. ; Mathur, D. (1996) Dissociation dynamics NO₂ of in intense laser fields: directional specificity of O⁺ and NO⁺ fragments Journal of Physics B: Atomic, Molecular and Optical Physics, 29 (13). L481-L488. ISSN 0953-4075

Safvan, C. P. ; Rajgara, F. A. ; Bhardwaj, V. R. ; Kumar, G. Ravindra ; Mathur, Deepak (1996) Laser ablation of carbon clusters in high charge states Chemical Physics Letters, 255 (1-3). pp. 25-31. ISSN 0009-2614

Kumar, G. Ravindra ; Gross, P. ; Safvan, C. P. ; Rajgara, F. A. ; Mathur, D. (1996) Pendular motion of linear CS₂ in intense laser fields Journal of Physics B: Atomic, Molecular and Optical Physics, 29 (3). L95-L104. ISSN 0953-4075

Kumar, G. Ravindra ; Gross, P. ; Safvan, C. P. ; Rajgara, F. A. ; Mathur, Deepak (1996) Molecular pendular states in intense laser fields Physical Review A, 53 (5). pp. 3098-3102. ISSN 1050-2947

Kumar, G. Ravindra ; Rajgara, F. A. ; Mathur, D. (1996) On the proposal for femtosecond parent-ion mass spectrometry Rapid Communications in Mass Spectrometry, 10 (13). pp. 1626-1628. ISSN 0951-4198

Kumar, G. Ravindra ; Rajgara, F. A. ; Rangwala, S. A. (1995) Optical nonlinearity in a mode-locking dye: optical limiting and four wave mixing Chemical Physics Letters, 245 (2-3). pp. 287-291. ISSN 0009-2614

Singh, Bhanu P. ; Kumar, G. Ravindra ; Sharma, K. K. (1995) Nature of delayed luminescence and optical nonlinearity in rhodamine 6G doped boric acid glass Chemical Physics Letters, 237 (5-6). pp. 485-492. ISSN 0009-2614

Kumar, G. Ravindra ; Safvan, C. P. ; Rajgara, F. A. ; Mathur, D. (1995) Study of the interactions of intense laser beams and of fast-ion beams with molecules Rapid Communications in Mass Spectrometry, 9 (4). pp. 329-335. ISSN 0951-4198

Kumar, G. Ravindra ; Rajgara, F. A. (1995) Z-scan studies and optical limiting in a mode-locking dye Applied Physics Letters, 67 (26). pp. 3871-3873. ISSN 0003-6951

Mathur, Deepak ; Kumar, G. Ravindra ; Safvan, C. P. ; Rajgara, F. A. (1994) Comparison of the dissociative ionization of CS₂ in intense laser fields and by charged particle impact: orientational effects caused by light polarization? Journal of Physics B: Atomic, Molecular and Optical Physics, 27 (17). L603-L603. ISSN 0953-4075

Kumar, G. Ravindra ; Safvan, C. P. ; Rajgara, F. A. ; Mathur, Deepak (1994) Intense laser field ionisation of CS₂ at 532 nm. Does dissociation precede ionisation? Chemical Physics Letters, 217 (5-6). pp. 626-630. ISSN 0009-2614

Kumar, G. Ravindra ; Safvan, C. P. ; Rajgara, F. A. ; Mathur, Deepak (1994) Dissociative ionization of molecules by intense laser fields at 532 nm and 10¹²-10¹⁴ W cm^-2 Journal of Physics B: Atomic, Molecular and Optical Physics, 27 (14). p. 2981. ISSN 0953-4075

Mathur, Deepak ; Safvan, C. P. ; Kumar, G. Ravindra ; Krishnamurthy, M. (1994) Molecular-orientation effects in the dissociative ionization of CH₄ in intense laser fields Physical Review A, 50 (1). R7-R9. ISSN 1050-2947

Sharma, K. K. ; Divakara Rao, K. ; Kumar, G. Ravindra (1994) Nonlinear optical interactions in dye-doped solids Optical and Quantum Electronics, 26 (1). pp. 1-23. ISSN 0306-8919

Kumar, G. Ravindra ; Krishnamurthi, Vidhya ; Mathur, Deepak (1993) On the kinetic energy released upon collision-induced dissociation of oriented diatomic ions Rapid Communications in Mass Spectrometry, 7 (8). pp. 734-737. ISSN 0951-4198

Kumar, G. Ravindra ; Wategaonkar, S. J. ; Roy, Mita (1993) Laser induced transient gratings in bacteriorhodopsin Optics Communications, 98 (1-3). pp. 127-131. ISSN 0030-4018

Kumar, G. Ravindra ; Menon, Latika ; Mathur, Deepak (1993) Ion-collision spectrometric study of the dissociation dynamics of S₂⁺ and CS⁺ radicals Physical Review A, 48 (2). pp. 1257-1263. ISSN 1050-2947

Kumar, G. Ravindra ; Singh, Bhanu P. ; Sharma, K. K. (1991) Continuous-wave self-diffraction in dye-doped glasses Journal of the Optical Society of America - B, 8 (10). pp. 2119-2127. ISSN 0740-3224

Kumar, G. Ravindra ; Singh, Bhanu P. ; Divakar Rao, K. ; Sharma, K. K. (1990) Polarization-based optical logic using laser-excited gratings Optics Letters, 15 (4). pp. 245-247. ISSN 0146-9592

Kumar, G. Ravindra ; Singh, Bhanu P. ; Sharma, K. K. (1989) Optical phase conjugation in Rhodamine-6G doped boric acid glass Optics Communications, 73 (1). pp. 81-84. ISSN 0030-4018