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| Naji, M. |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kočí, Jan | Prague |
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| Azam, Siraj |
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| Azevedo, Nuno Monteiro |
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| Rignanese, Gian-Marco |
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Aithal, Shubhrajyotsna
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2019THE REALIZATION OPPORTUNITY OF IDEAL ENERGY SYSTEM USING NANOTECHNOLOGY BASED RESEARCH AND INNOVATIONS
- 2017Literature Review On Organic Materials For Third Harmonic Optical And Photonic Applications
- 2016A Review on Organic Materials for Optical Phase Conjugation & All-optical Switches
- 2016ABCD analysis of Dye doped Polymers for Photonic Applications
- 2015Comparative Study on Azo dye-doped Polymer Films for Optical Phase Conjugation
- 2013Study of Optical Limiting and Optical Phase Conjugation in DASPB Dye-doped Polymer Filmscitations
- 2012Study of phase conjugated wave in DASPB dye-doped polymer filmscitations
- 2012Study of Degenerate Four-Wave Mixing in Disperse Orange Dye-Doped Polymer Filmcitations
- 2011Optical nonlinearity of dye-doped polymer film using Z-scan techniquecitations
- 2011Nonlinear Absorption Studies of Disperse Orange Doped Polymer Film
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article
Study of Optical Limiting and Optical Phase Conjugation in DASPB Dye-doped Polymer Films
Abstract
Nonlinear optical properties, optical limiting and Optical phase conjugation through degenerate four-wave mixing is observed in 4-[4-(Dimethylamino)styryl]-1- docosyl pyridinium bromide (DASPB) dye-doped in Polymethyl methacrylate – metacrylic acid (PMMA-MA) polymer films under low-power, continuous-wave laser irradiation. A maximum phase conjugate efficiency of 0.42% has been obtained for probe beam intensity at 2.5 W/cm2. Phase conjugation is observed for both parallel- and orthogonally-polarized probe and pump beams. The maximum PC reflectivity is achieved when the angle between probe beam and forward pump beam is 8 degrees. The effects of dye concentration, inter beam angle between probe and forward pump beam on phase conjugation reflectivity are also studied. PC signal strength first increases and then decreases with time. PC reflectivity is also increased by increasing the intensity of the backward and forward pump beam. The polarization and intensity profile are verified to be preserved in the conjugate signal. The predominant phase conjugation signal is attributed to the fact that saturable absorption and two photon induced florescence property of the dye molecules.