Pseudosymmetric Features and Nonlinear Optical Properties of Potassium Titanyl Phosphate Crystals

Gazhulina, Anastasia P.; Marychev, M. O.

doi:10.4236/csta.2013.23015

Cited by 12 publications

(6 citation statements)

References 48 publications

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“…KTP family have approximately 118 isomorphs [54][55][56], including 29 pure crystals and 89 doped crystals, all of which have a uniform form and can be written as ′ 4 , where M = K, Rb , Na, Cs, TI, NH 4 ; M ′ = Ti, Sn, Sb, Zr, Ge, AI, Cr, Fe, V, Nb, Ta, Ga; X = P, As, Si, Ge. Only five of these crystals are studied in this paper, and most of the other crystals have not been thoroughly studied.…”

Section: Discussionmentioning

confidence: 99%

Terahertz waves generation using the isomorphs of PPKTP crystal: a theoretical investigation

Chen,

Zhao,

Wang

et al. 2021

Preprint

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Highly efficient terahertz (THz) wave sources based on difference frequency generation (DFG) process in nonlinear optical crystals play an important role for the applications of THz wave. In order to find more novel nonlinear crystals, here we theoretically investigate the generation of THz wave using the isomorphs of periodically poled KTiOPO 4 (PPKTP), including periodically poled RTP, KTA, RTA and CTA. By solving the cascaded difference frequency coupled wave equations, it is found that the intensities of the THz wave generated from the cascaded difference frequency processes are improved by 5.27, 2.87, 2.82, 3.03, and 2.76 times from the non-cascaded cases for KTP, RTP, KTA, RTA and CTA, respectively. The effects of the crystal absorption, the phase mismatch and the pump intensity are also analyzed in detail. This study might help to provide a stronger THz radiation source based on the nonlinear crystals.

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Section: Discussionmentioning

confidence: 99%

Terahertz waves generation using the isomorphs of PPKTP crystal: a theoretical investigation

Chen,

Zhao,

Wang

et al. 2021

Preprint

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“…The KTP family has 118 known isomorphs [44][45][46], with a general formula of MM ′ OX O 4 , where M = K, Rb, Na, Cs, Tl, NH 4 ; M ′ = Ti, Sn, Sb, Zr, Ge, Al, Cr, Fe, V, Nb, Ta, Ga; X = P, As, Si, Ge. The Sellmeier equations and thermal-optical equation for most of these crystals are not reported yet, therefore, exploring the thermal optical properties of these crystal is promising for further research.…”

Section: Discussionmentioning

confidence: 99%

Thermal effects of the quantum states generated from the isomorphs of PPKTP crystal

Jin

Chen

Laudenbach

et al. 2019

Optics & Laser Technology

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We theoretically and numerically investigate the temperature-dependent properties of the biphotons generated from four isomorphs of periodically poled KTiOPO4 (PPKTP): i.e., PPRTP, PPKTA, PPRTA and PPCTA. It is discovered that the first type of group-velocity-matched (GVM) wavelength is decreased by 6.4, 1.2, 8.9, 25.6 and 6.3 nm, while the phase-matched wavelength is decreased by 4.4, -0.4, -1.2, 29.1 and 59.5 nm for PPKTP, PPRTP, PPKTA, PPRTA and PPCTA, respectively, when the temperature is increased from 20 • C to 120 • C. Although the maximal spectral purity of the heralded single photons is not changed at different temperature, the Hong-Ou-Mandel (HOM) interference shows different patterns due to a shift of the joint spectral amplitude. These thermal effects are very important for precise control of the quantum state for the future applications in quantum information processing, for example, in quantum interference or spectroscopy.

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“…Particularly, the interrelation "pseudosymmetry-nonlinear optical property" has been studied in more detail for the last years for the series of simple NCS compounds and more complex ternary oxide compounds in the classes of potassium titanyl phosphate crystals [150][151][152].…”

Section: Discussionmentioning

confidence: 99%

Comparative Interrelationship of the Structural, Nonlinear-Optical and Other Acentric Properties for Oxide, Borate and Carbonate Crystals

Kidyarov

2017

Crystals

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Abstract:The structure and the maximal nonlinear optical (NLO) susceptibility χ (2) are tabulated for more 700 acentric binary oxides, 220 crystals of simple, binary and complex borates and for the same set of 110 carbonates, tartrates, formates, oxalates, acetates and fluoride-carbonates used in ultraviolet and deep ultraviolet optoelectronics. According to the chemical formula, the structural symbols of these crystals have been plotted on the plane of two minimal oxide bond lengths (OBL). It is shown that acentric crystals are positioned on such plane inside the vertical, horizontal and slope intersected ellipses of "acentricity". The oxide and borate crystals with moderate NLO susceptibility are found in the central parts of these ellipses intersection and, with low susceptibility, on top, at the bottom and border of the ellipses rosette. The nonpolar fluoride-carbonate crystals with high NLO susceptibility are found in the curve-side rhombic parts of the slope ellipse of "acentricity". The unmonotonous fuzzy dependence "χ (2) " on the OBL of these crystals is observed, and their clear-cut taxonomy on compounds with π-or σ-oxide bonds is also established. It is shown that the correlations of χ (2) with other acentric properties are nonlinear for the whole set of the oxide crystals having their clear maximum at a certain value of the piezoelectric or electro-optic coefficient. The correlation "hardness-thermoconductivity-fusibility" is plotted for oxide crystals, part of which is used at the creation of self-frequency-doubling solid state lasers.

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Pseudosymmetric Features and Nonlinear Optical Properties of Potassium Titanyl Phosphate Crystals

Cited by 12 publications

References 48 publications

Terahertz waves generation using the isomorphs of PPKTP crystal: a theoretical investigation

Terahertz waves generation using the isomorphs of PPKTP crystal: a theoretical investigation

Thermal effects of the quantum states generated from the isomorphs of PPKTP crystal

Comparative Interrelationship of the Structural, Nonlinear-Optical and Other Acentric Properties for Oxide, Borate and Carbonate Crystals

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