From 2514e7edee8cd66f6bc2e966082168b9663f7450 Mon Sep 17 00:00:00 2001 From: Blaise Thompson Date: Wed, 9 May 2018 16:52:28 -0500 Subject: 2018-05-09 16:52 --- active_correction/chapter.tex | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'active_correction') diff --git a/active_correction/chapter.tex b/active_correction/chapter.tex index e996898..1fa4bcc 100644 --- a/active_correction/chapter.tex +++ b/active_correction/chapter.tex @@ -281,12 +281,14 @@ The cross term between scatter and signal is the product of $\Phi_\mathrm{sig}$ \Delta_{2} = \Phi_{\mathrm{sig}} &=& \mathrm{e}^{-\left((\tau_2+\tau_1)\omega\right)} \\ \Delta_{2^\prime} = \Phi_{\mathrm{sig}}\mathrm{e}^{-\tau_{2^\prime}\omega} &=& \mathrm{e}^{-\tau_1\omega} \end{eqnarray} -Figure \ref{fig:scatterinterferenceinTrEEcurrent} presents numerical simulations of scatter interference for the current delay parameterization. +Figure \ref{fig:scatterinterferenceinTrEEcurrent} presents numerical simulations of scatter +interference for the current delay parameterization. % \subsubsection{Instrumental Removal of Scatter} The effects of scatter can be entirely removed from CMDS signal by combining two relatively -straight-forward instrumental techniques: \textit{chopping} and \textit{fibrillation}. % +straight-forward instrumental techniques: \textit{chopping} and \textit{fibrillation}. +\cite{HeislerIsmaelA2014a} % Conceptually, chopping removes intensity-level offset terms and fibrillation removes amplitude-level interference terms. % Both techniques work by modulating signal and scatter terms differently so that they may be @@ -334,7 +336,7 @@ D &=& I_\mathrm{2} + I_\mathrm{other} Grouping into difference pairs, \begin{eqnarray} A-B &=& -I_\mathrm{1} \\ -C-D &=& I_\mathrm{signal} + I_\mathrm{1} +C-D &=& I_\mathrm{signal} + I_\mathrm{1} \end{eqnarray} So: \begin{equation} \label{eq:dual_chopping} @@ -346,12 +348,12 @@ Interference between signal and an excitation beam will only appear in `C'-type not be removed in Equation \ref{eq:dual_chopping}. % To remove such interference terms, you must \textit{fibrillate} your excitation fields. -An alternative to dual chopping is single-chopping and `leveling'... % -this technique was used prior to May 2016 in the Wright Group... % -`leveling' and single-chopping is also used in some early 2DES work... +An alternative to dual chopping is single-chopping and `leveling'. % +This technique was used prior to May 2016 in the Wright Group. % +`Leveling' and single-chopping is also used in some early 2DES work. % \cite{BrixnerTobias2004a}. % -\begin{figure} +\begin{figure} \includegraphics[scale=0.5]{"active_correction/scatter/TA chopping comparison"} \caption[Comparison of single, dual chopping.]{Comparison of single and dual chopping in a MoS\textsubscript{2} transient absorption experiment. Note that this data has not been -- cgit v1.2.3