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Chung SJ, Maciel GS, Pudavar HE, Lin TC, He GS, Swiatkiewicz J, Prasad PN, Lee DW, Jin JI. Two-Photon Properties and Excitation Dynamics of Poly(p-phenylenevinylene) Derivatives Carrying Phenylanthracene and Branched Alkoxy Pendents. J Phys Chem A 2002. [DOI: 10.1021/jp0141474] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Swiatkiewicz J, Eisenhardt G, Prasad PN, Thomas JM, Jones W, Theocharis CR. Phonon spectroscopy of photochemical reactions in organic solids. Photodimerization of 2-benzyl-5-benzylidenecyclopentanone and photopolymerization of 2,5-distyrylpyrazine. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100207a006] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bhawalkar JD, Shih A, Pan SJ, Liou WS, Swiatkiewicz J, Reinhardt BA, Prasad PN, Cheng PC. Two-photon laser scanning fluorescence microscopy-from a fluorophore and specimen perspective. ACTA ACUST UNITED AC 2001. [DOI: 10.1002/1361-6374(199609)4:3<168::aid-bio7>3.0.co;2-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Shen Y, Markowicz P, Winiarz J, Swiatkiewicz J, Prasad PN. Nanoscopic study of second-harmonic generation in organic crystals with collection-mode near-field scanning optical microscopy. Opt Lett 2001; 26:725-727. [PMID: 18040433 DOI: 10.1364/ol.26.000725] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Collection-mode near-field scanning optical microscopy (NSOM) is used to map nanoscopic second-harmonic generation (SHG) in N -(4-nitrophenyl)- (L) -prolinol crystals. A spatial resolution of 98 nm is achieved. Near-field polarization-dependent SHG measurement is performed, and a local effective SHG susceptibility of 224+/-18 pm/V is obtained.
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Maciel GS, Kim KS, Chung SJ, Swiatkiewicz J, He GS, Prasad PN. Linear and Nonlinear Optical Properties of an Erbium Two-Photon Dye Salt. J Phys Chem B 2001. [DOI: 10.1021/jp004522c] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- G. S. Maciel
- Photonics Research Laboratory, Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000
| | - K.-S. Kim
- Photonics Research Laboratory, Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000
| | - S.-J. Chung
- Photonics Research Laboratory, Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000
| | - J. Swiatkiewicz
- Photonics Research Laboratory, Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000
| | - G. S. He
- Photonics Research Laboratory, Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000
| | - P. N. Prasad
- Photonics Research Laboratory, Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000
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Shen Y, Swiatkiewicz J, Jakubczyk D, Xu F, Prasad PN, Vaia RA, Reinhardt BA. High-density optical data storage with one-photon and two-photon near-field fluorescence microscopy. Appl Opt 2001; 40:938-940. [PMID: 18357076 DOI: 10.1364/ao.40.000938] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A spatially localized photochemical reaction induced by near-field femtosecond laser pulses is demonstrated on a nanometer scale and used for high-density optical data storage. Recorded domains down to 120 and 70 nm are obtained with one-photon and two-photon excitation, respectively. It is shown that the local-field confinement that is due to the quadratic dependence of two-photon excitation on light intensity has the potential to increase the near-field optical storage density.
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Jiang Y, Jakubczyk D, Shen Y, Swiatkiewicz J, Prasad PN. Nanoscale nonlinear optical process: theoretical modeling of second-harmonic generation for both forbidden and allowed light. Opt Lett 2000; 25:640-642. [PMID: 18064136 DOI: 10.1364/ol.25.000640] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Based on a combination of the multiple-multipole method and nonlinear coupled-wave equations, a rigorous three-dimensional numerical simulation of nonlinear optical interactions between an optical near field and a nonlinear medium is performed, allowing us to study the dependence of second-harmonic (SH) near-field intensity on tip-sample distance and the polarization state of the incident fundamental wave. It is demonstrated that allowed and forbidden light make different contributions to the SH near-field intensity.
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Joshi MP, Swiatkiewicz J, Xu F, Prasad PN, Reinhardt BA, Kannan R. Energy transfer coupling of two-photon absorption and reverse saturable absorption for enhanced optical power limiting. Opt Lett 1998; 23:1742-1744. [PMID: 18091900 DOI: 10.1364/ol.23.001742] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We introduce a new approach to enhancing the optical power-limiting function at near-IR wavelength (~800 nm) by coupling effective two-photon absorption in one molecule with excited-state absorption in another molecule. We experimentally demonstrate this approach by using a strong two-photon absorbing dye, AF-380, and a strong reverse saturable absorber, C(60) . A nanosecond time-resolved experiment is used to show that energy transfer from AF-380 to C(60) generates triplet excitation in C(60) that further absorbs the pump beam to enhance the power-limiting function.
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Bhawalkar J, Swiatkiewicz J, Prasad P, Pan S, Shih A, Samarabandu J, Cheng P, Reinhardt B. Nondestructive evaluation of polymeric paints and coatings using two-photon laser scanning confocal microscopy. POLYMER 1997. [DOI: 10.1016/s0032-3861(97)00125-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bhawalkar JD, Swiatkiewicz J, Pan SJ, Samarabandu JK, Liou WS, He GS, Berezney R, Cheng PC, Prasad PN. Three-dimensional laser scanning two-photon fluorescence confocal microscopy of polymer materials using a new, efficient upconverting fluorophore. Scanning 1996; 18:562-566. [PMID: 8946771 DOI: 10.1002/sca.4950180805] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Three-dimensional confocal imaging of polymer samples was achieved by the use of two-photon excited fluorescence in both positive and negative contrast modes. The fluorophore was a new and highly efficient two-photon induced upconverter, resulting in improved signal strength at low pumping power. Because of the relatively long wavelength of the excitation source (798 nm from a mode-locked Ti:Sapphire laser), this technique shows a larger penetration depth into the samples than provided by conventional single-photon fluorescence confocal microscopy. Single-photon and two-photon images of the same area of each sample show significant differences. The results suggest the possibility of using two-photon confocal microscopy, in conjunction with highly efficient fluorophores, as a tool to study the surface, interface, and fracture in material science applications.
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Affiliation(s)
- J D Bhawalkar
- Department of Chemistry, State University of New York at Buffalo 14260, USA
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Samoc M, Samoc A, Luther-Davies B, Swiatkiewicz J, Jin CQ, White JW. Real and imaginary components of the third-order nonlinearity of polyaniline dodecylbenzenesulfonic salt. Opt Lett 1995; 20:2478. [PMID: 19865258 DOI: 10.1364/ol.20.002478] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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Shi L, Huang GL, Lehane C, Kim D, Kwok HS, Swiatkiewicz J, Xu GC, Prasad PN. Picosecond photoresponse in Y-Ba-Cu-O ultrathin films. Phys Rev B Condens Matter 1993; 48:6550-6555. [PMID: 10009208 DOI: 10.1103/physrevb.48.6550] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Swiatkiewicz J, Miodoński W. [Current opinions about diagnosis of fat embolism]. Pol Tyg Lek 1991; 46:571-4. [PMID: 1669113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Prasad PN, Swiatkiewicz J, Pfleger J. Resonant Nonlinear Optical Processes and Charge Carrier Dynamics in Photoresponsive Polymers. ACTA ACUST UNITED AC 1988. [DOI: 10.1080/15421408808083000] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Swiatkiewicz J, Talapatra GB, Kurland RJ, Prasad PN. Phonon echo in organic solids. J Chem Phys 1983. [DOI: 10.1063/1.444709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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