Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
ENSEMBLE MONTE-CARLO SIMULATION OF RAMAN-SCATTERING IN GAAS
Date
1994-01-28
Author
GUNCER, SE
FERRY, DK
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
133
views
0
downloads
Cite This
A picosecond laser excited GaAs p-i-n structure is studied using an ensemble Monte Carlo method to determine the temporal and spatial evolution of the hot electron distribution function. The experimental set-up we simulate is a novel method based on Raman scattering of light from the electrons to measure the drift velocity of electrons in GaAs at high electric fields. It is observed that the simulation agrees with the experimental results, however, the measured velocity is actually averaged over the time evolution of the spatial distribution of the Raman probe in the sample and underestimates the average velocity of electrons over the pulselength excited in the (Gamma) conduction band of a 1.909 eV laser pulse, which is calculated to be in the order of 8.5 X 107 cm/sec for fields of 25 kV/cm at a temperature of 77 K.
Subject Keywords
Engineering, Electrical & Electronic
,
Optics; Physics, Applied
URI
https://hdl.handle.net/11511/65598
Collections
Department of Physics, Conference / Seminar
Suggestions
OpenMETU
Core
High-Q Slot-Mode Photonic Crystal Nanobeam Cavity Biosensor With Optomechanically Enhanced Sensitivity
Erdil, Mertcan; Kocaman, Serdar (Institute of Electrical and Electronics Engineers (IEEE), 2019-03-01)
A biosensor design based on a photonic crystal nanobeam cavity with an optomechanical positive feedback mechanism is proposed. Design of the cavity and optomechanical sensitivity enhancement method are numerically analyzed and the results show that fourfold improvement is possible without any degradation of the Q-factor.
A 2D Slotted Rod Type PhC Cavity Inertial Sensor Design for Impact Sensing
Orsel, Ogulcan Emre; ERDİL, MERTCAN; Kocaman, Serdar (Institute of Electrical and Electronics Engineers (IEEE), 2020-02-01)
A tunable 2D rod type Si Photonic Crystal cavity based impact sensing configuration is proposed and numerically analyzed. The cavity is sandwiched by perfect electric conductor (PEC) boundaries in order to provide out-of-plane light confinement. An on-purpose air slot is introduced between the Si rods and top PEC plate moving the light confinement into the slotted region and making the cavity highly responsive to the displacement of top PEC boundary. Optomechanical coupling strength is calculated to be on t...
Extension of forward-backward method with DFT-based acceleration algorithm for the efficient analysis of large periodic arrays with arbitrary boundaries
Aydın Çivi, Hatice Özlem; Chou, HT (Wiley, 2005-11-05)
An extension of the discrete Fourier transform (DFT)-based forward-backward algorithm is developed using the virtual-element approach to provide a fast and accurate analysis of electromagnetic radiation/scattering front electrically large, planar, periodic, finite (phased) arrays with arbitrary boundaries. Both the computational complexity and storage requirements of this approach are O(N-tot) (N-tot is the total number of unknowns). The numerical results for both printed and freestanding dipole array's wit...
Real time electromagnetic target classification using a novel feature extraction technique with PCA-based fusion
Sayan, Gönül (Institute of Electrical and Electronics Engineers (IEEE), 2005-02-01)
This paper introduces an efficient technique to design an electromagnetic target classifier whose reference database is constructed using scattered data at only a few aspects. The suggested technique combines a natural-resonance related feature extraction process with a novel, multiaspect feature fusion scheme. First, moderately aspect-variant late-time features are extracted from scattered field of a given candidate target at several different reference aspects using the Wigner transformation to characteri...
A numerically stable algorithm for scattering from several circular cylinders including metamaterials with different boundary conditions
SEVER, EMRAH; DİKMEN, FATİH; TUCHKİN, YURY ALEXANDEROVİCH; Sabah, Cumali (Elsevier BV, 2018-01-01)
The analytically obtained algebraic equation systems for the TM/TE-z polarized monochromatic waves scattering from eccentrically layered circular cylinders are ill-conditioned for numerical calculations. Therefore, such ill conditioned systems must be regularized for reliable numerical results. Here, the steps of the regularization of the ill conditioned system obtained for the scattered field from a circular metamaterial cylinder includes three parallel circular cylinders: a dielectric, an impedance and a ...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
S. GUNCER and D. FERRY, “ENSEMBLE MONTE-CARLO SIMULATION OF RAMAN-SCATTERING IN GAAS,” 1994, vol. 2142, p. 182, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65598.
