1D Plasmonic Nanocavity Solver
		       
                        Author: Muthiah Annamalai

Solver:
=======
This package contains code for calculating the electric field in surface of
a 1D Silver thinfilm nanocavity on Silicon substrate and further propagating
this nearfield to a farfield. Solvers further compute the farfield radiation
pattern of this nanocavity, and its coupling to a TEM00 Gaussian mode.

Typically these nanophotonic devices based on Plasmon propagation in sub-wavelength nanocavities offer oppotunities for Purcell-effect driven single photon
emitters, and mode shaping for efficient farfield radiation collections.

Further this package offers nonlinear discrete search methods using Genetic Algorithms and Particle-Swarm-Optimizations for efficient search of geometries with
suitable properties for devices providing resonance and transmission at different
wavelengths simulatenously. Such devices maybe useful in nonlinear optics applications.

Acknowlegements:
================
Some parts of this work were done in collaboration with my graduate advisor.

CITATION:
=========
To cite usage of this solver, please us the following citation:

 Muthiah Annamalai & Michael Vasilyev (2010) Optimization of coupling from a sub-wavelength nanoaperture to the fundamental Gaussian mode, Journal of Modern Optics, 57:19, 1954-1960, DOI: 10.1080/09500340.2010.519830 

To refer to the article published in J. Mod. Opt. above please get the publication from the following URLs:
 URL: https://www.tandfonline.com/doi/citedby/10.1080/09500340.2010.519830
 Also mirrored at: http://www.uta.edu/faculty/vasilyev/papers/JMO_nanoaperture.pdf


LICENSE:
========
The code in this package may be used and shared under terms of the MIT license,
unless otherwise clearly marked for use under a different license.

###############################################################################
11/18/08 : Code scripts written and their short descriptions


GA subroutine functions
-----------------------
	binval.m
	binvec.m
	ga_aperiodic_scaled.m
	ga_asymmetric_scaled.m
	ga_depth_aperiodic_scaled.m
	ga_mutate_binvec.m
	ga_xover_binvec.m
	genseq.m
	randint.m
	rastrigin.m


Solvers 
---------------------------
	ttotal_aperiodic_solver.m	: Ttot solver aperiodic, depth fix
	ttotal_periodic_solver.m	: Ttot solver periodic, depth fix
	asymmetric_solver_scaled.m	: asymmetric aperiodic, depth fix

Aperiodic Solvers 
-----------------

	[ Scaled Waist case ]
	---------------------

	depth variations allowed
	------------------------
	aperiodic_depthsolver_scaled.m		: coupling to gaussian mode
	aperiodic_depthsolver_scaled_ttotal.m	: just reflection 1 - Ttotal

	depth h fixed
	-------------
	aperiodic_solver_scaled.m		: depth fixed
		
	[ Unscaled Waist case ]
	-----------------------
	aperiodic_solver_unscaled.m

Aperiodic GA Solvers
--------------------

	Fixed Lambda GA Solver at particular N
	--------------------------------------
	lambda_aperiodic_scaled.m			: depth fixed
	lambda_depth_aperiodic_scaled.m			: depth variable
	
Postprocessing drawing code
---------------------------
draw_JMO_cavity.m
drawcavity.m
drawing_postproc.m	

OPA optimization GA code
---------------------------
opa_hillclimb_lambda_aperiodic_scaled.m
opa_lambda_dapscaled.m
sfg_hillclimb_apscaled.m