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Analysis of measurement of quadratic electro-optic effect in castor oil
(Wydawnictwo Politechniki Łódzkiej, 2013) Izdebski, Marek; Ledzion, Rafał; Kucharczyk, Włodzimierz
This works presents an extended theoretical analysis of the response of experimental setup to an applied electric field during measurements of electro-optic coefficients in optically active liquids using an optical polarimetric technique. The analysis includes liquids belonging to ∞ ∞, ∞ 2 and ∞ Curie symmetry groups and the following phenomena were taken into account: natural optical activity, natural linear birefringence, dichroism, and the effects induced by an applied electric field – linear and quadratic electro-optic effects and linear and quadratic electrogyration. The presented example concerns numerical error analysis for measurement of the quadratic electro-optic effect in castor oil, which exhibits the symmetry ∞ 2 between a pair of plane-parallel electrodes.
Application of the mach-zehnder interferometer to measure the quadratic electro-optic effect in nonpolar liquids.
(Wydawnictwo Politechniki Łódzkiej, 2015) Ledzion, Rafał; Górski, Piotr; Kubiak, Katarzyna; Kucharczyk, Włodzimierz
A modification of Mach-Zehnder interferometer is proposed. It is shown that by introducing an additional time dependent phase shift in one of the interferometer arms, its sensitivity may be significantly increased. The method is applied to measure the quadratic electrooptic effect in transformer oil.
Effect of ageing on the magnitude and temperature dependence of the Kerr constant in the castor oil used in pharmacy
(Wydawnictwo Politechniki Łódzkiej, 2012) Stępień, Maja; Ledzion, Rafał; Górski, Piotr; Kucharczyk, Włodzimierz
This work presents measurements of the Kerr constant and its temperature dependence in the fresh and aged castor oil used in pharmacy. It is shown that the effect of aging noticeably affects electrooptic properties of the oil.
Effect of temperature on the refractive index and Kerr effect of the transformer oil Nynas Nytro Taurus
(Wydawnictwo Politechniki Łódzkiej, 2009) Górski, Piotr; Ledzion, Rafał; Sadowski, Marcin; Kucharczyk, Włodzimierz
The temperature dependence of refractive index of the mineral transformer oil Nynas Nytro Taurus within the range 278-385K is determined. Changes with temperature in the quadratic electrooptic response of the oil are investigated. The results obtained indicate the usefulness of the oil as immersion liquid in measurements of the quadratic electrooptic effect and electrostriction in crystals.
Estimations of the magnitude of the fourth-order electrooptic effect in KDP-type crystals
(Lodz University of Technology Press, 2013) Ledzion, Rafał; Izdebski, Marek; Górski, Piotr; Kucharczyk, Włodzimierz
An attempt to measure the fourth-order electrooptic effect in KH2PO4(KDP) and NH4H2PO4(ADP) is presented. Contrary to previously reported results of the order of magnitude 10-30m4V-4, the fourth-order coefficient |g111111- g221111| is found to be lower than 5 · 10-33m4V-4and 1 · 10-34m4V-4, respectively. In addition, the effect of imperfect crystal cutting and alignment is investigated by means of calculations based on Jones calculus. It is found that even small inaccuracies may lead to an apparent fourth-order electrooptic effect comparable in magnitude to the previously reported values.
Frequency dependence of the Kerr constant in nynas nytro 3000 oil determined by the polarimetric method
(Wydawnictwo Politechniki Łódzkiej, 2018) Poborska, Julita; Dąbrówka, Dominika; Chwirot, Maksymilian; Ledzion, Rafał; Izdebski, Marek; Kucharczyk, Włodzimierz
Frequency dependence of the Kerr constant in nynas nytro 3000 oil determined by the polarimetric method A frequency dependence of the Kerr constant K in transformer oil Nynas Nytro 3000 within a frequency range 117-5017 Hz is determined. An averaged value (2.30 ± 0.03)·10ˉ¹⁵ m/V² for K is obtained. The constant is found to be weakly frequency dependent and approaches its maximum 2.37·10ˉ¹⁵ m/V² at about 3000 Hz. The Kerr constant is of comparable value to that observed in other mineral oils employed previously in measurements of the quadratic electro-optic effect and the electrostriction in crystals.
Kerr constant of Fomblin Z
(Wydawnictwo Politechniki Łódzkiej, 2008) Ledzion, Rafał; Karolczak, Stefan; Górski, Piotr; Kucharczyk, Włodzimierz
The Kerr constant B of polyperfluoroethylenemethylene oxide Fomblin Z has been determined within the temperature range 295-323K. At 300K the constant B was found to be equal to 1.7 10(-15) m/V2. The results obtained indicate usefulness of this oligomeric compound as an immersion liquid in measurements of the quadratic electrooptic effect and electrostriction in crystals.
Matrices of the tensor with the internal symmetry [V2][V5]
(Wydawnictwo Politechniki Łódzkiej, 2012) Kucharczyk, Włodzimierz; Górski, Piotr; Ledzion, Rafał
Matrices of the tensor of the internal symmetry [V2][V5] are presented for those point symmetry classes for which the matrices have not been published yet. Conditions allowing for measurements of nonlinear electrooptic effects are discussed.
Modelowanie zjawisk fizycznych w krawędziowych laserach azotkowych oraz ich matrycach
(Wydawnictwo Politechnika Łódzka, 2016) Kuc, Maciej; Sarzała, Robert P.; Red. nauk. Wydziału Fizyki Technicznej, Informatyki i Matematyki Stosowanej: Poniszewska-Marańda, Aneta; Kucharczyk, Włodzimierz; Czyszanowski, Tomasz
W niniejszej pracy podjęto próbę kompleksowej analizy działania azotkowych laserów krawędziowych zaprojektowanych na emisję światła o długości fali ok. 400 nm oraz jednowymiarowych matryc takich laserów, skupiając uwagę przede wszystkim na przebiegu zjawisk elektrycznych i cieplnych występujących podczas ich pracy z falą ciągłą w temperaturze pokojowej. Głównym celem pracy było pokazanie wpływu poszczególnych elementów konstrukcyjnych analizowanych przyrządów na wielkość emitowanej z nich mocy optycznej w celu wyznaczenia ich optymalnych struktur. Przeprowadzone badania były częściowo realizowane we współpracy z Instytutem Wysokich Ciśnień Unipress Polskiej Akademii Nauk, co umożliwiło powiązanie wyników symulacji komputerowych z danymi eksperymentalnymi. W celu realizacji tych badań opracowany został numeryczny model lasera oraz matrycy laserowej uwzględniający wiele elementów istotnych dla ich działania. Dodatkowo na bazie dostępnej literatury opracowano szczegółowe zależności określające parametry fizyczne wszystkich materiałów wykorzystywanych do budowy wspomnianych przyrządów ze szczególnym uwzględnieniem parametrów elektrycznych i cieplnych.
On the contribution of the quadratic electrooptic effect to the nonlinear response proportional to the fourth power of modulating field
(Wydawnictwo Politechniki Łódzkiej, 2007) Izdebski, Marek; Kucharczyk, Włodzimierz
It is shown that the fourth-order electrooptic effect cannot be measured without a background of the contribution that is proportional to the square of the quadratic electrooptic coefficient. The contribution manifests on the fourth power of the modulating field and may be calculated. Thus, if the contribution is found to be comparable with the measured fourth-order electrooptic response, this apparent fourth-order effect should be taken into account in the interpretation ofthe results of the measurement.
On the nature temperature dependence of intrinsic quadratic electrooptic coefficients in KDP-type crystals
(Wydawnictwo Politechniki Łódzkiej, 2010) Kucharczyk, Włodzimierz; Ledzion, Rafał; Górski, Piotr; Izdebski, Marek
It is shown that the fourth-order electrooptic effect may be responsible for the temperature dependence of the quadratic electrooptic coefficients defined in terms of polarization. An example is given for the ammonium dihydrogen phosphate (ADP) crystal.
On the possibility of measurements of nonlinear electrooptic effects in 432 symmetry crystals
(Wydawnictwo Politechniki Łódzkiej, 2011) Kucharczyk, Włodzimierz; Górski, Piotr; Izdebski, Marek; Ledzion, Rafał
It is shown that despite the fact that in 432 point group crystals the linear electrooptic effect is vetoed by symmetry there are configurations for which the third-order effect may appear. The results obtained indicate that the 432 crystals are promising media for measurements of nonlinear electrooptic effects. Macroscopic description of nonlinear electrooptic phenomena in the crystals is presented and the matrices of tensors representing the effects up to the fifth-order are given.
Temperature dependence of the Kerr constant of fomblin M03.
(Wydawnictwo Politechniki Łódzkiej, 2016) Ledzion, Rafał; Górski, Piotr; Izdebski, Marek; Kucharczyk, Włodzimierz
The Kerr constant B of perfluoropolyether Fomblin M03 has been determined within the temperature range 295-370K. At 300K the constant B was found to be equal to 2.8·10-15 m/V2. The measurements indicate that B varies inversely with temperature. Relatively low electro-optic response of the perfluoropolyether shows its usability in measurements of the quadratic electrooptic effect and the electrostriction in crystals.
What is the true order of magnitude of the quadratic electrooptic coefficient |g1111-g1122| in RDP crystal?
(Wydawnictwo Politechniki Łódzkiej, 2007) Górski, Piotr; Kilański, Łukasz; Ledzion, Rafał; Kucharczyk, Włodzimierz
Measurements based on the dynamic polarimetric technique of the electrooptic coefficient |g1111-g1122| are applied to determine the order of magnitude of the quadratic electrooptic effect in RDP. The results obtained confirm that the effect is two orders of magnitude smaller than widely quoted in the literature data obtained previously by the static polarimetric method.