Thick BaTiO3 Epitaxial Films Integrated on Si by RF Sputtering for Electro-Optic Modulators in Si Photonics

2021 ◽  
Author(s):  
Agham B. Posadas ◽  
Hyoju Park ◽  
Marc Reynaud ◽  
Wei Cao ◽  
Jamie D. Reynolds ◽  
...  
Keyword(s):  
Rf Sputtering ◽  
Epitaxial Films ◽  
Si Photonics ◽  
Electro Optic

Crystal Phase and Orientation Dependence of Electro-Optic Effect in Epitaxial PLZT an PZT Films

2007 ◽  
Vol 350 ◽  
pp. 99-102
Author(s):  
Keisuke Satoh ◽  
Akio Sugama ◽  
Masatoshi Ishii ◽  
Masao Kondo ◽  
Kazuaki Kurihara
Keyword(s):  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
Epitaxial Films ◽  
Orientation Dependence ◽  
Pockels Effect ◽  
Solution Deposition ◽  
Zirconate Titanate ◽  
Electro Optic ◽  
Pzt Films ◽  
Extraordinary Refractive Index

Lanthanum-modified lead zirconate titanate and lead zirconate titanate epitaxial films with (100) and (111) orientations were grown respectively on (100) and (111) niobium, lending conductivity to strontium titanate through chemical solution deposition. This study investigated changes in the ordinary and extraordinary refractive index no and ne induced in these films by an electric field using the prism-coupling method. In the (100) epitaxial PZT 30/70 film, anisotropic electro-optic effects arise from the Pockels effect. The isotropic electro-optic effect, which is no = ne , was achieved on (100) epitaxial PLZT 8/65/35 and PZT 70/30 films.

Dependence of Electro-Optic Effects on the Orientations of Epitaxial LiNbO3 Films

1995 ◽  
Vol 401 ◽  
Author(s):  
See-Hyung Lee ◽  
T. W. Noh ◽  
Jai-Hyung Lee
Keyword(s):  
Pulsed Laser Deposition ◽  
Oxygen Pressure ◽  
Pulsed Laser ◽  
Epitaxial Films ◽  
Laser Deposition ◽  
Effective Coefficient ◽  
Low Oxygen ◽  
Deposition Parameter ◽  
Electro Optic ◽  
Low Oxygen Pressure

AbstractEpitaxial LiNbO3 films were grown on a-cut sapphire, i.e., α-A12O3(0112), substrates by pulsed laser deposition. It is found the oxygen pressure is an important deposition parameter to influence the orientations of the LiNbO3 films. At an oxygen pressure of 10−1 torr, LiNbO3(0001) film was grown epitaxially. And, at a low oxygen pressure (i.e., 5x10−4 torr), LiNbO3(1120) film was grown epitaxially. Due to the anisotropic electro-optic (EO) constants, these films with the different orientations display large differences in their EO properties: the epitaxial LiNb3(0001) film shows little EO effects, but the LiNbO3(1120) film shows a large quadratic EO behavior with an effective coefficient of 2.38×10−5 m2/V2. The dependence of EO effects on the orientations of the epitaxial films was analyzed in terms of the linear and quadratic EO tensors of LiNbO3.

Electro-optic effect caused by polar nanoregion switching in lanthanum-modified lead zirconate titanate epitaxial films

2007 ◽  
Vol 102 (5) ◽  
pp. 054104 ◽  
Author(s):  
Keisuke Sato ◽  
Masao Kondo ◽  
Kazuaki Kurihara
Keyword(s):  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
Epitaxial Films ◽  
Zirconate Titanate ◽  
Electro Optic

Magnetic and Magnetooptical Properties of Bi,CO:YIG Epitaxial Films Prepared by RF Sputtering

1988 ◽  
Vol 3 (6) ◽  
pp. 485-486
Author(s):  
K. Aoki ◽  
M. Gomi ◽  
M. Abe
Keyword(s):  
Rf Sputtering ◽  
Epitaxial Films

Enhancement of Faraday Effect in Highly Ce-Substituted YIG Epitaxial Films by RF Sputtering

1990 ◽  
Vol 29 (Part 2, No. 1) ◽  
pp. L99-L100 ◽  
Author(s):  
Manabu Gomi ◽  
Hiroshi Furuyama ◽  
Masanori Abe
Keyword(s):  
Faraday Effect ◽  
Rf Sputtering ◽  
Epitaxial Films

scholarly journals High-responsivity graphene photodetectors integrated on silicon microring resonators

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
S. Schuler ◽  
J. E. Muench ◽  
A. Ruocco ◽  
O. Balci ◽  
D. van Thourhout ◽  
...  
Keyword(s):  
Single Layer ◽  
Input Power ◽  
Optical Switches ◽  
Microring Resonator ◽  
Single Layer Graphene ◽  
Optical Receivers ◽  
Major Barrier ◽  
Si Photonics ◽  
Electro Optic ◽  
Voltage Responsivity

AbstractGraphene integrated photonics provides several advantages over conventional Si photonics. Single layer graphene (SLG) enables fast, broadband, and energy-efficient electro-optic modulators, optical switches and photodetectors (GPDs), and is compatible with any optical waveguide. The last major barrier to SLG-based optical receivers lies in the current GPDs’ low responsivity when compared to conventional PDs. Here we overcome this by integrating a photo-thermoelectric GPD with a Si microring resonator. Under critical coupling, we achieve >90% light absorption in a ~6 μm SLG channel along a Si waveguide. Cavity-enhanced light-matter interactions cause carriers in SLG to reach ~400 K for an input power ~0.6 mW, resulting in a voltage responsivity ~90 V/W, with a receiver sensitivity enabling our GPDs to operate at a 10−9 bit-error rate, on par with mature semiconductor technology, but with a natural generation of a voltage, rather than a current, thus removing the need for transimpedance amplification, with a reduction of energy-per-bit, cost, and foot-print.

Electro-optic property of ZnO:Mn epitaxial films

2008 ◽  
Vol 5 (9) ◽  
pp. 3110-3112
Author(s):  
T. Oshio ◽  
K. Masuko ◽  
A. Ashida ◽  
T. Yoshimura ◽  
N. Fujimura
Keyword(s):  
Epitaxial Films ◽  
Electro Optic ◽  
Optic Property ◽  
Electro Optic Property

Electro‐optic contrast observations in single‐domain epitaxial films of bismuth titanate

1973 ◽  
Vol 22 (1) ◽  
pp. 26-28 ◽  
Author(s):  
S.Y. Wu ◽  
W.J. Takei ◽  
M.H. Francombe
Keyword(s):  
Bismuth Titanate ◽  
Epitaxial Films ◽  
Single Domain ◽  
Electro Optic

Influence of Crystal Phase and Orientation on Electro-Optic Effect of PLZT Epitaxial Films

2005 ◽  
Vol 902 ◽  
Author(s):  
Keisuke Sato ◽  
Masatoshi Ishii ◽  
Masao Kondo ◽  
Kazuaki Kurihara
Keyword(s):  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
Epitaxial Films ◽  
Pockels Effect ◽  
Solution Deposition ◽  
Zirconate Titanate ◽  
Electro Optic ◽  
Electrooptic Effects ◽  
Extraordinary Refractive Index ◽  
Polar Clusters

AbstractLanthanum-modified lead zirconate titanate and lead zirconate titanate epitaxial films with (100) and (111) orientations are grown respectively on (100) and (111) niobium, lending conductivity to strontium titanate through chemical solution deposition. This study investigates changes in the ordinary and extraordinary refractive index no and ne induced by the electric field in these films using the prism-coupling method. Anisotropic electrooptic effects arise from Pockels effect and switching among polar clusters. Isotropic electrooptic effect is realized on PLZT 8/65/35 and PZT 70/30 of (100) epitaxial films.

Precipitation in Al + 4% Cu Epitaxial Films

1968 ◽  
Vol 26 ◽  
pp. 384-385
Author(s):  
S. Herd ◽  
S. M. Mader
Keyword(s):  
Solid Solution ◽  
Bulk Material ◽  
Epitaxial Films ◽  
Detectable Change ◽  
Cu Films ◽  
Solution Treated ◽  
Single Crystal Films ◽  
Crystal Films ◽  
Diffraction Patterns ◽  
Deposited Films

Single crystal films in (001) orientation, about 1500 Å thick, were produced by R-F sputtering of Al + 4 wt % Cu onto cleaved KCl at 150°C substrate temperature. The as-deposited films contained numerous θ-CuAl2 particles (C16 structure) about 0.1μ in size. They were transferred onto Mo screens, solution treated and rapidly cooled (within about ½ min) so as to retain a homogeneous solid solution. Subsequently, the films were aged in vacuum at various temperatures in order to induce precipitation and to compare structures and morphologies of precipitate particles in Al-Cu films with those found in age hardened bulk material.Aging for 3 weeks at 60°C or 48 hrs at 100°C did not produce any detectable change in high resolution micrographs or diffraction patterns. In this range Guinier-Preston zones (GP) form in quenched bulk material. The absence of GP in the present experiments in this aging range is perhaps due to the cooling rate employed, which might be more equivalent to an aged and reverted bulk material than to a quenched one.

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