Periodic poling of lithium niobate/tantalate is often done using electric field applied across the crystal with patterned electrodes. How then is the poling process affected if it is performed in the presence of magnetic field?
I have performed an experiment to frequency mix 974 nm LD laser and a C-band ASE laser source in a single period (10.2 um) MgO:PPLN. I however noticed five peaks at 487, 536, 598, 756, and 816 nm...
08 September 2018 9,806 8 View
I have a sample of Y-branch waveguides fabricated on lithium niobate substrate by annealed proton exchange (APE) process. I would like to measure the output power from each arm after coupling...
02 March 2017 8,270 6 View
I need a Matlab code to plot a rectangular wave function with a constant period and normalized amplitude. Please see the attached exponential Fourier series. Thank you in advance.
01 February 2017 9,934 4 View
Dear all, I would like to study negative corona discharge for poling non linear optical crystals e.g Lithium Tantalate. I have however attempted to use plasma model example in COMSOL but i don't...
08 September 2016 5,318 3 View
I have a simple matlab code for plotting a Y-junction but it can't run. Any one with matlab knowledge can please advice me on the attached code.
31 December 2015 1,207 10 View
Y-branch waveguide structures are fundamental elements of integrated optics devices such as power or optical splitters, power or optical combiners, integrated-optic gyroscopes, Mach-Zehnder...
31 December 2015 8,080 5 View
COMSOL Multiphysics 5.2 (and above) has a solved Mach-zehnder interferometer in its model library for which part of its geometry is S-shape. I am using version 4.3b which doesn't have that...
31 December 2015 8,956 2 View
I am investigating the influence of different modulation formats on gain flatness of raman assisted fibre optical parametric amplifiers.
31 December 2014 7,284 2 View
can someone help me on how to use available wind velocity data to design a specification of a wind turbine generator
02 March 2010 6,996 4 View
I’m trying to reproduce the acousto-optic coupling simulation in the paper Frequency–angular resolving LiDAR using chip-scale acousto-optic beam steering. LNOI(lithium niobate on insulator) is...
13 August 2024 9,795 0 View
I tried four trials of the same Copper Phosphides sample in Alkaline medium ( 0.5M KOH) with Hg/HgO reference electrode and Pt as counter electrode. I used 0.001 V/s scan rate for first three...
10 August 2024 3,629 1 View
I am not able to get good literature and the physics behind how first these grains and grain boundaries arises out of no where when we make a pellet to study its dielectric properties and then how...
07 August 2024 5,177 3 View
During low-temperature testing, new diffraction peaks that appear could be indicative of several phenomena. In one of our tests, we observed notable new peaks around 40° and 45° in a specific...
06 August 2024 726 3 View
Why is the molecule's orientation with an electric field affect polarizability? Electrons are diffuse enough to be independent with respect to orientation and effect of electric field on...
03 August 2024 7,843 1 View
I have been using paraffin, but the deposited ZnO still detach from electrode. What is the best binder to modify graphite paste electrode with ZnO nanoparticles?
03 August 2024 4,624 3 View
If you think of electrons with spin as bar magnets, you know bar magnets of opposite polarity as long as they're not occupying the same spatial location don't cancel out each other's magnetic...
03 August 2024 3,927 2 View
I am using a Bruker 600M solid-state NMR spectrometer with a Micro 2.5 microimaging system. The test sample is a tube of 1M LiCl aqueous solution, and the nucleus detected is 1H. I am trying to...
01 August 2024 9,227 1 View
Following curve related to Co0.6Mn0.4Fe2O4 Magnetic nanoparticles with extra phase a-Fe2O3. I will appreciate to help me to interpretation this spectroscopy, especially the blue line.
31 July 2024 9,140 2 View
What information we can get from PXRD analysis other than from SCXRD analysis of a crystal ?
30 July 2024 6,261 4 View