Electro-optic tuning of potassium tantalate-niobate whispering gallery resonators

2018 ◽  
Author(s):  
Karsten Buse ◽  
Jan Szabados ◽  
Sushanth Kini Manjeshwar ◽  
Ingo Breunig
Keyword(s):  
Potassium Tantalate ◽  
Potassium Tantalate Niobate ◽  
Whispering Gallery ◽  
Electro Optic

scholarly journals Electro-optic eigenfrequency tuning of potassium tantalate-niobate microresonators

APL Photonics ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 016106
Author(s):  
Jan Szabados ◽  
Christoph S. Werner ◽  
Simon J. Herr ◽  
Ingo Breunig ◽  
Karsten Buse
Keyword(s):  
Potassium Tantalate ◽  
Potassium Tantalate Niobate ◽  
Electro Optic

Electro-optic potassium-tantalate-niobate films prepared by pulsed laser deposition from segmented pellets

1994 ◽  
Vol 9 (5) ◽  
pp. 1272-1279 ◽  
Author(s):  
S. Yilmaz ◽  
R. Gerhard-Multhaupt ◽  
W.A. Bonner ◽  
D.M. Hwang ◽  
A. Inam ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Analytical Techniques ◽  
Deposition Process ◽  
Optical Quality ◽  
Laser Deposition ◽  
Optical Measurements ◽  
Potassium Tantalate ◽  
Practical Applications ◽  
Potassium Tantalate Niobate ◽  
Electro Optic

Thin films of potassium tantalate niobate (KTN) were prepared by means of pulsed excimer-laser deposition and investigated with a number of analytical techniques, including electrical and electro-optical measurements. For applications in longitudinal electro-optic modulators, a transparent electrode is required between substrate and electro-optic layers. Suitable electrode materials, which at the same time permit epitaxial growth of KTN, were identified and prepared. The resulting layered samples were not only of good epitaxial and optical quality, but also exhibited the expected maximum of the longitudinal electro-optic effect at temperatures between the phase transitions from cubic to tetragonal and from tetragonal to orthorhombic. However, the maximum achievable electro-optic phase shift was found to be limited to roughly τ/100 for KTN films in the thickness range around 1 μm. Therefore, much thicker films are probably necessary for most practical applications, which requires significant improvements in the long-term stability and homogeneity of the deposition process.

Principles, Devices, and Applications of Beam Deflection Based on Quadratic Electro-Optic Effect of Potassium Tantalate Niobate

2020 ◽  
Vol 57 (7) ◽  
pp. 071609
Author(s):  
刘冰 Liu Bing ◽  
王旭平 Wang Xuping ◽  
杨玉国 Yang Yuguo ◽  
户延延 Hu Yanyan ◽  
禹化健 Yu Huajian ◽  
...  
Keyword(s):  
Beam Deflection ◽  
Potassium Tantalate ◽  
Potassium Tantalate Niobate ◽  
Electro Optic

scholarly journals Electro-Optic Control of Lithium Niobate Bulk Whispering Gallery Resonators: Analysis of the Distribution of Externally Applied Electric Fields

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 298
Author(s):  
Yannick Minet ◽  
Hans Zappe ◽  
Ingo Breunig ◽  
Karsten Buse
Keyword(s):  
Lithium Niobate ◽  
Electric Field ◽  
Electric Fields ◽  
Frequency Comb ◽  
Parametric Oscillation ◽  
Pockels Effect ◽  
Optical Mode ◽  
Cylindrical Resonator ◽  
Whispering Gallery ◽  
Electro Optic

Whispering gallery resonators made out of lithium niobate allow for optical parametric oscillation and frequency comb generation employing the outstanding second-order nonlinear-optical properties of this material. An important knob to tune and control these processes is, e.g., the linear electro-optic effect, the Pockels effect via externally applied electric fields. Due to the shape of the resonators a precise prediction of the electric field strength that affects the optical mode is non-trivial. Here, we study the average strength of the electric field in z-direction in the region of the optical mode for different configurations and geometries of lithium niobate whispering gallery resonators with the help of the finite element method. We find that in some configurations almost 100% is present in the cavity compared to the ideal case of a cylindrical resonator. Even in the case of a few-mode resonator with a very thin rim we find a strength of 90%. Our results give useful design considerations for future arrangements that may benefit from the strong electro-optic effect in bulk whispering gallery resonators made out of lithium niobate.

Preparation of Potassium Tantalate Niobate by Sol-Gel Method

1992 ◽  
Vol 75 (6) ◽  
pp. 1701-1704 ◽  
Author(s):  
Shin-ichi Hirano ◽  
Toshinobu Yogo ◽  
Ko-ichi Kikuta ◽  
Toshiyuki Morishita ◽  
Yasuhiro Ito
Keyword(s):  
Sol Gel ◽  
Potassium Tantalate ◽  
Gel Method ◽  
Sol Gel Method ◽  
Potassium Tantalate Niobate

Laser Deflector Based on Electric-Field-Induced Strain of Manganese-Doped Potassium Tantalate-Niobate Single Crystals

2020 ◽  
Vol 20 (12) ◽  
pp. 8053-8058
Author(s):  
Yu Wang ◽  
Peng Tan ◽  
Zhongxiang Zhou ◽  
Xiaolin Huang ◽  
Chengpeng Hu ◽  
...  
Keyword(s):  
Electric Field ◽  
Single Crystals ◽  
Potassium Tantalate ◽  
Potassium Tantalate Niobate ◽  
Electric Field Induced Strain
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