Electronic effects of substitution chemistry in the potassium titanyl phosphate (KTiOPO4) structure field: structure and optical properties of potassium vanadyl phosphate

1990 ◽  
Vol 29 (11) ◽  
pp. 2158-2163 ◽  
Author(s):  
Mark L. F. Phillips ◽  
William T. A. Harrison ◽  
Thurman E. Gier ◽  
Galen D. Stucky ◽  
Gururaj V. Kulkarni ◽  
...  
Keyword(s):  
Optical Properties ◽  
Field Structure ◽  
Potassium Titanyl Phosphate ◽  
Electronic Effects ◽  
Vanadyl Phosphate ◽  
Substitution Chemistry

scholarly journals Моды волновода с пороговой нелинейностью

2020 ◽  
Vol 46 (16) ◽  
pp. 43
Author(s):  
С.Е. Савотченко
Keyword(s):  
Dielectric Constant ◽  
Optical Properties ◽  
Surface Waves ◽  
Nonlinear Optical ◽  
Layer Structure ◽  
Finite Thickness ◽  
Critical Value ◽  
Field Structure ◽  
Finite Width ◽  
Border Regions

A three-layer structure consisting of a nonlinear optical medium with a stepwise change in the dielectric constant inside which there is a dielectric layer of finite thickness is considered. The surface waves of two types of symmetry with a special field structure can propagate along the layers. Domains of finite width with different optical properties in the border regions in a nonlinear medium are formed. The formation of domains, as well as the existence of surface waves, occurs at interlayer thicknesses not exceeding a certain critical value.

scholarly journals Optical Properties of KTP Crystals and Their Potential for Terahertz Generation

Crystals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 310 ◽  
Author(s):  
Alexander Mamrashev ◽  
Nazar Nikolaev ◽  
Valery Antsygin ◽  
Yury Andreev ◽  
Grigory Lanskii ◽  
...  
Keyword(s):  
Optical Properties ◽  
Second Harmonic ◽  
Difference Frequency Generation ◽  
Terahertz Wave ◽  
Optical Quality ◽  
Potassium Titanyl Phosphate ◽  
Phase Matching ◽  
Wide Range ◽  
Parametric Processes ◽  
Wave Conversion

High nonlinearity, wide transparency range and optical quality allowed potassium titanyl phosphate (KTiOPO4, KTP) crystals to be used in a wide range of nonlinear applications. The success of KTP usage in the visible and infrared (IR) ranges drives interest in applying it at longer wavelengths, that is, in the terahertz (THz) range. We use THz optical properties of KTP crystals measured by terahertz time-domain spectrometer (THz-TDS) and refractive index approximated in the form of Sellmeier equations to investigate KTP application possibilities for IR-to-THz and THz-to-THz wave conversion. As a result, phase matching for s − f → f and s − f → s types of difference frequency generation (DFG) of Ti:Sapphire laser (at the wavelengths of 0.65, 0.8 and 1.1 µm) is found possible, as well as second harmonic generation (SHG) of THz waves by f + s→f type of interaction in the XZ principle plane of the crystal. Terahertz wave generation by phase-matched parametric processes in KTP demonstrates evident advantages in comparison with that of widely used MgO-doped LiNbO3 crystals.

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