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-rw-r--r--active_correction/chapter.tex39
1 files changed, 24 insertions, 15 deletions
diff --git a/active_correction/chapter.tex b/active_correction/chapter.tex
index ee20859..ef19f40 100644
--- a/active_correction/chapter.tex
+++ b/active_correction/chapter.tex
@@ -18,23 +18,36 @@
\clearpage
-\section{Hardware} % -----------------------------------------------------------------------------
+\section{Introduction} % =========================================================================
-\subsection{Delay Stages}
+MR-CMDS is subject to a number of possible artifacts, many of them stemming from the imperfect
+nature of the frequency-tunable light sources we currently have. %
+It is self-evidently desirable to correct these artifacts, when possible. %
+Indeed many of these artifacts, such as OPA power, phase mismatch and absorption effects have
+regularly been corrected for. % TODO: link to examples in applications section
+These corrections are applied after measurement, typically including information from other sources
+(such as absorption spectra, in the case of absorption effect corrections).
-% TODO: discuss _all 3_ delay configurations.... implications for sign conventions etc
+A more interesting class of corrections are ``active'' corrections---that is, corrections that must
+be actively applied during acquisition and cannot be applied in post processing. %
+These corrections are more insidious, and they are often neglected because the hardware and/or
+software does not allow for them. %
-\section{Signal Acquisition}
+In this chapter I explore some of these active correction strategies that are useful in the context
+of MR-CMDS. %
+Some of these strategies have already been implemented, others are partially implemented, and
+others are still just ideas. %
+I hope to show that active correction is a particularly useful strategy in MR-CMDS. %
-Old boxcar: 300 ns window, ~10 micosecond delay. Onset of saturation ~2 V.
+\section{Spectral delay correction} % ============================================================
-\subsection{Digital Signal Processing}
+\section{Poynting correction} % ==================================================================
-% TODO:
+\section{Excitation power correction} % ==========================================================
-\section{Artifacts and Noise} % ------------------------------------------------------------------
+\section{Chopping} % =============================================================================
-\subsection{Scatter}
+\subsection{Scatter} % ---------------------------------------------------------------------------
Scatter is a complex microscopic process whereby light traveling through a material elastically
changes its propagation direction. %
@@ -270,10 +283,6 @@ Now, substituting in BRAZARD formalism:
\frac{<D_{PR}>D}{D_{PR}}}{<PR><PU>}
\end{equation}
-\section{Light Generation} % ---------------------------------------------------------------------
+\section{Fibrillation} % =========================================================================
-\subsection{Automated OPA Tuning}
-
-\section{Optomechanics} % ------------------------------------------------------------------------
-
-\subsection{Automated Neutral Density Wheels}
+\section{Conclusions} % ========================================================================== \ No newline at end of file