Effect of low dose high energy O3+ implantation on refractive index and linear electro-optic properties in X-cut LiNbO3: Planar optical waveguide formation and characterization

2002 ◽  
Vol 92 (11) ◽  
pp. 6477-6483 ◽  
Author(s):  
G. G. Bentini ◽  
M. Bianconi ◽  
M. Chiarini ◽  
L. Correra ◽  
C. Sada ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Waveguide ◽  
Low Dose ◽  
High Energy ◽  
Planar Optical Waveguide ◽  
Electro Optic

Planar optical waveguide formation in LiNbO3 by means of high energy ion implantation

2007 ◽  
Author(s):  
F. Nesprías ◽  
M. E. Debray ◽  
M. Fischer ◽  
A. Lamagna ◽  
A. J. Kreiner ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Optical Waveguide ◽  
High Energy ◽  
Planar Optical Waveguide

Design methodology of refractive index engineering by implantation of high-energy particles in electro-optic materials

2007 ◽  
Vol 46 (19) ◽  
pp. 4132 ◽  
Author(s):  
Alexander Gumennik ◽  
Har?el Ilan ◽  
Roei Fathei ◽  
Abraham Israel ◽  
Aharon J. Agranat ◽  
...  
Keyword(s):  
Refractive Index ◽  
Design Methodology ◽  
High Energy ◽  
Electro Optic ◽  
High Energy Particles

scholarly journals Adjustment of Terahertz Properties Assigned to the First Lowest Transition of (D+, X) Excitonic Complex in a Single Spherical Quantum Dot Using Temperature and Pressure

2021 ◽  
Vol 11 (13) ◽  
pp. 5969
Author(s):  
Noreddine Aghoutane ◽  
Laura M. Pérez ◽  
Anton Tiutiunnyk ◽  
David Laroze ◽  
Sotirios Baskoutas ◽  
...  
Keyword(s):  
Refractive Index ◽  
Quantum Dot ◽  
Energy Region ◽  
Practical Importance ◽  
High Energy ◽  
Spherical Quantum Dot ◽  
Terahertz Region ◽  
Mass Approximation ◽  
Optical Responses ◽  
Temperature And Pressure

This theoretical study is devoted to the effects of pressure and temperature on the optoelectronic properties assigned to the first lowest transition of the (D+,X) excitonic complex (exciton-ionized donor) inside a single AlAs/GaAs/AlAs spherical quantum dot. Calculations are performed within the effective mass approximation theory using the variational method. Optical absorption and refractive index as function of the degree of confinement, pressure, and temperature are investigated. Numerical calculation shows that the pressure favors the electron-hole and electron-ionized donor attractions which leads to an enhancement of the binding energy, while an increasing of the temperature tends to reduce it. Our investigations show also that the resonant peaks of the absorption coefficient and the refractive index are located in the terahertz region and they undergo a shift to higher (lower) therahertz frequencies when the pressure (temperature) increases. The opposite effects caused by temperature and pressure have great practical importance because they offer an alternative approach for the adjustment and the control of the optical frequencies resulting from the transition between the fundamental and the first excited state of exciton bound to an ionized dopant. The comparison of the optical properties of exciton, impurity and (D+,X) facilitates the experimental identification of these transitions which are often close. Our investigation shows that the optical responses of (D+,X) are located between the exciton (high energy region) and donor impurity (low energy region) peaks. The whole of these conclusions may lead to the novel light detector or source of terahertz range.

Sign in / Sign up

Export Citation Format

Share Document