Influence of rhodamine 6G dye on the properties of potassium acid phthalate single crystals

2019 ◽  
Vol 125 (3) ◽  
Author(s):  
K. Meera ◽  
Shalom Ann Mathews ◽  
R. Muralidharan
Keyword(s):  
Single Crystals ◽  
Rhodamine 6G ◽  
Potassium Acid Phthalate ◽  
Rhodamine 6G Dye ◽  
Acid Phthalate

Effect of trytophan as dopant on potassium acid phthalate single crystals

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Single Crystals ◽  
Room Temperature ◽  
Visible Region ◽  
X Ray Diffraction ◽  
X Ray ◽  
Slow Evaporation Technique ◽  
Absorption Studies ◽  
Evaporation Technique ◽  
Potassium Acid Phthalate ◽  
Acid Phthalate

Optically transparent single crystals of potassium acid phthalate (KAP, 0.5 g) 0.05 g and 0.1 g (1 and 2 mol %) trytophan were grown in aqueous solution by slow evaporation technique at room temperature. Single crystal X- ray diffraction analysis confirmed the changes in the lattice parameters of the doped crystals. The presence of functional groups in the crystal lattice has been determined qualitatively by FTIR analysis. Optical absorption studies revealed that the doped crystals possess very low absorption in the entire visible region. The dielectric constant has been studied as a function of frequency for the doped crystals. The thermal stability was evaluated by TG-DSC analysis.

Optical studies of potassium acid phthalate single crystals added with amino acids

Optik ◽  
2016 ◽  
Vol 127 (15) ◽  
pp. 5935-5941
Author(s):  
C. Amuthambigai ◽  
C.K. Mahadevan ◽  
X.Sahaya Shajan
Keyword(s):  
Amino Acids ◽  
Single Crystals ◽  
Optical Studies ◽  
Potassium Acid Phthalate ◽  
Acid Phthalate

scholarly journals Linear and Nonlinear Optical Constants of Potassium Acid Phthalate crystal

2018 ◽  
Vol 10 (3) ◽  
pp. 97
Author(s):  
Arun Kuzhivelil Joseph ◽  
S Jayalekshmi
Keyword(s):  
Single Crystals ◽  
Nonlinear Optical ◽  
Optical Constants ◽  
Potassium Hydrogen Phthalate ◽  
Hydrogen Phthalate ◽  
Third Order ◽  
Potassium Hydrogen ◽  
Potassium Acid Phthalate ◽  
Shg Efficiency ◽  
Acid Phthalate

Single crystals of potassium hydrogen phthalate (KAP) are grown by solution growth technique. Linear optical constants are evaluated from UV/VIS/NIR spectrum. The Z scan technique is used to elucidate the third order nonlinearity in the material. The results indicate that the compound exhibits reverse saturable absorption (RSA) and self-defocusing performance. The second harmonic generation (SHG) efficiency of the crystal evaluated by Kurtz and Perry technique is compared with that of the standard KDP crystal. Attempt is made to correlate the SHG efficiency with the crystalline perfection in the material. Full Text: PDF ReferencesMiniewicz.A, Barkiewics.S, "On the electro‐optic properties of single crystals of sodium, potassium and rubidium acid phthalates", Adv.Mat.Opt.Elect,2,157(1993). CrossRef Comeretto.D, Rosy.L, "Optical properties of potassium acid phthalate", J.Mat.Res, 12, 1262(1997). CrossRef Krajewski.T, Breczewski.T, "Dielectric and pyroelectric properties of TGS crystals doped with nitroaniline molecules", Ferroelectrics, 25, 547 (1980). CrossRef N. Kejalakshmy, K. Srinivasan, "Growth, optical and electro-optical characterisations of potassium hydrogen phthalate crystals doped with Fe3+ and Cr3+ ions", Opt. Mater. 27,389–394A, (2004). [5] CrossRef Ester. G.R, Price.R, Halfpenny. P.J, "An atomic force microscopic investigation of surface degradation of potassium hydrogen phthalate (KAP) crystals caused by removal from solution", J.Cryst.Growth, 182, 95(1998). CrossRef Hiroyuki Toda, Carl M. Verber "Simple technique to reveal a slow nonlinear mechanism in a z-scanlike n2 measurement", Opt. Lett. 17(19) 1379(1992). CrossRef K.J. Arun, S.Jayalekshmi, "Investigations on the nonlinear optical properties of glycinium oxalate single crystals", Optoelectron. Lett. 7(2), 136, (2011). CrossRef K.J.Arun, S.Jayalekshmi, "Third order nonlinear optical constants of L-alaninium oxalate", Phot. Lett. Poland 7(3), 81-83 (2015) CrossRef

scholarly journals Dispersive Kinetics from Single Molecules Oriented in Single Crystals of Potassium Acid Phthalate

2007 ◽  
Vol 111 (26) ◽  
pp. 9146-9156 ◽  
Author(s):  
Kristin L. Wustholz ◽  
Eric D. Bott ◽  
Christine M. Isborn ◽  
Xiaosong Li ◽  
Bart Kahr ◽  
...  
Keyword(s):  
Single Crystals ◽  
Single Molecules ◽  
Potassium Acid Phthalate ◽  
Acid Phthalate

Habit modification of potassium acid phthalate (KAP) single crystals by impurities

1999 ◽  
Vol 207 (4) ◽  
pp. 325-329 ◽  
Author(s):  
P Murugakoothan ◽  
R Mohan Kumar ◽  
P.M Ushasree ◽  
R Jayavel ◽  
R Dhanasekaran ◽  
...  
Keyword(s):  
Single Crystals ◽  
Potassium Acid Phthalate ◽  
Habit Modification ◽  
Acid Phthalate

scholarly journals Growth, structural, thermal and optical properties of Mg2+ -Co2+ doped potassium acid phthalate crystals

2014 ◽  
Vol 37 (2) ◽  
pp. 165-172 ◽  
Author(s):  
Mostak Hossain ◽  
Shahan Ara Begum ◽  
Jiban Podder
Keyword(s):  
Single Crystals ◽  
Optical Transmission ◽  
Vital Role ◽  
Secondary Nucleation ◽  
Optically Transparent ◽  
Isothermal Evaporation ◽  
Potassium Acid Phthalate ◽  
Academy Of Sciences ◽  
Co Doped ◽  
Acid Phthalate

Single crystals of pure potassium acid phthalate (KAP) and magnesium-cobalt (Mg2+-Co2+) co-doped potassium acid phthalate crystals were grown by an isothermal evaporation method. Optically transparent and coloured KAP single crystals were grown by doping divalent bimetallic impurities. Enhancement of the metastable zonewidth was achieved by the addition of co-doped bimetallic impurities in KAP solution. It is anticipated that these larger cations play a vital role in the growth mechanism and it favours to reduce the formation of secondary nucleation by positioning the doped metal ions into the interstitial sites. The XRD results confirm that the incorporation of bimetallic ions into the KAP crystal lattice. The optical transmission is found to decrease in Mg-Co doped crystals compared to that of pure KAP. DOI: http://dx.doi.org/10.3329/jbas.v37i2.17557 Journal of Bangladesh Academy of Sciences, Vol. 37, No. 2, 165-172, 2013

scholarly journals Effects of Co-Doped Bimetallic Impurities on the Growth and Nucleation Kinetics of Potassium Acid Phthalate (KAP)

1970 ◽  
Vol 33 (2) ◽  
pp. 189-197 ◽  
Author(s):  
SA Begum ◽  
J Podder
Keyword(s):  
Induction Period ◽  
Single Crystals ◽  
Vital Role ◽  
Nucleation Kinetics ◽  
Supersaturation Ratio ◽  
Potassium Acid Phthalate ◽  
Academy Of Sciences ◽  
Critical Nuclei ◽  
Co Doped ◽  
Acid Phthalate

Single crystals of pure potassium acid phthalate (KAP) and nickel-magnesium (Ni-Mg), cobalt-magnesium (Co2+-Mg2+) and lithium-magnesium (Li1+-Mg2+) co-doped potassium acid phthalate crystals were grown by an isothermal evaporation method. Good quality and optically transparent single crystals of pure and bimetallic doped KAP were grown. Enhancement of the metastable zonewidth was achieved by the addition of co-doped novel bimetallic impurities in KAP solution. The induction period and various critical nucleation parameters such as radius of critical nucleus, number of molecules in the critical nuclei and the critical free energy change were calculated based on the classical theory for homogeneous nucleation. The induction period decreases exponentially with supersaturation ratio and hence the nucleation rate increases with the increase of supersaturation ratio for all systems. Subsequent incorporation of these bimetallic co-doped impurities into the crystal would allow the growth rate to achieve its maximum value. The induction period is found to increase with the incorporation of Ni2+, Co2+and Li1+ ions doped along with Mg2+ ions in KAP. It is anticipated that these larger cations play a vital role in the growth mechanism and it favors to reduce the formation of secondary nucleation by positioning the doped metal ions into the interstitial sites. DOI: 10.3329/jbas.v33i2.4102 Journal of Bangladesh Academy of Sciences, Vol. 33, No. 2, 189-197, 2009

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