fix: duplicate fig.

Author: ldes89150

paper.md

@@ -82,11 +82,11 @@ On the other hand, DMDs use micromirrors to locally turn on and off the light by
 # Usages
 `pySLM2` offers commonly used optics profiles right out of the box, including Hermite Gaussian, Laguerre Gaussian, super Gaussian (also known as "flat top"), and Zernike polynomials. These profiles are implemented as functional objects, and `pySLM2` automatically handles the profile sampling during hologram calculations.
 
-For profiles that are not included by default, users have the option to either inherit from the base class and implement their custom profiles or generate the sampled profiles in an array format to pass them to the hologram calculation function. As illustrated in Fig. \autoref{fig:lg}, here's an example of creating a hologram to generate a Laguerre Gaussian beam with a mode of $l=1$, $p=0$, which often referred to as a "doughnut beam", from the fundamental Gaussian mode. Unless specified, the simulation shown in this paper is simulated with the following conditions: $\lambda=369~\mathrm{nm}$ wavelength, $f=200~\mathrm{mm}$ Fourier lens focal length, and with Texas Instrument DLP9500 as the SLM ($1~\mathrm{px} = 10~\mu \mathrm{m}$ micromirror size).
+For profiles that are not included by default, users have the option to either inherit from the base class and implement their custom profiles or generate the sampled profiles in an array format to pass them to the hologram calculation function. As illustrated in \autoref{fig:lg}, here's an example of creating a hologram to generate a Laguerre Gaussian beam with a mode of $l=1$, $p=0$, which often referred to as a "doughnut beam", from the fundamental Gaussian mode. Unless specified, the simulation shown in this paper is simulated with the following conditions: $\lambda=369~\mathrm{nm}$ wavelength, $f=200~\mathrm{mm}$ Fourier lens focal length, and with Texas Instrument DLP9500 as the SLM ($1~\mathrm{px} = 10~\mu \mathrm{m}$ micromirror size).
 
 ![Hologram simulation for creating Laguerre Gaussian beam of $l=1$, $p=0$ mode from fundamental mode. (a) DMD mirror configuration. Bright pixels represent "on" and dark pixels represent "off". (b) Intensity profile of input fundamental Gaussian beam. (c) Intensity profile of the output Laguerre ($l=1$, $p=0$) Gaussian beam at the image plane. (d) Phase map of the output beam. An optical vortex can be observed at the center of the Laguerre $l=1$, $p=0$ mode (Source code: `examples/create_donut_beam.py`)\label{fig:lg}](create_donut_beam.png) 
 
-The arithmetic operations of the profiles are also overloaded, so one can easily combine different profiles through addition or rescale the profiles through multiplication. Shown in Fig. \autoref{fig:multi}, we create a hologram to generate two Gaussian beams. In the source code, it is written as adding two Gaussian profiles together at different positions.
+The arithmetic operations of the profiles are also overloaded, so one can easily combine different profiles through addition or rescale the profiles through multiplication. Shown in \autoref{fig:multi}, we create a hologram to generate two Gaussian beams. In the source code, it is written as adding two Gaussian profiles together at different positions.
 
 
 ![Hologram simulation for creating two Gaussian beams from one input Gaussian beam. (a) DMD mirror configuration. Bright pixels represent "on" and dark pixels represent "off". (b) Intensity profile of input single Gaussian beam. (c) Intensity profile of the two output Gaussian beams at the image plane. (d) Phase map of the output beam. An example of two Gaussian beams having opposite phases is shown. (Source code: `examples/create_donut_beam.py`) \label{fig:multi}](create_multiple_gaussian_beam.png)