Difference between revisions of "A.Williams: Objectives and Literature Review"

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<h2> Objectives and Literature Review </h2>
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<h3> Objectives and Literature Review </h3>
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<p style="font-family: helvetica; font-size:9pt">
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<ul>
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Programmable spatial light modulators (PSLM’s) are two-dimensional electrically addressable devices that function as reusable transparencies on which spatially varying amplitude or phase patterns can be written electronically, often with an output signal from a computer. In practice, there is cross coupling between the amplitude and phase modulation of such devices so that the modulation is really complex, although it is possible to operate them in a phase-mostly or amplitude-mostly mode.</p>
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<li> SLM:Project Overview  </li>
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<p style="font-family: helvetica; font-size:9pt">
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<ul>
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<li>SLM Beginnings & Holography </li>
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<ul>
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<li> Calibration, pixels, crystals, diffraction to gray scale imaging </li>
 +
<li> Learn about algorithms for holography + set up weekly meetings with someone who can explain concepts I get stuck on </li>
 +
<li> Write script for simple lens </li>
 +
<li> Test script for simple lens and then perform mini experiment using a modified version of Young's double split experiment(miniprojectA).</li>
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</ul>
 +
</ul>
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<li>Spiral Phase Plate Contrast & Optical Filtering </li>
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<ul>
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<li> 1 </li>
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<li> 2 </li>
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<li> 3 </li>
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<li> 4</li>
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</ul>
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<li>Bessel Beam and Optical Micromanipulation</li>
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<li> Write hologram script for bessel beam  </li>
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<li> Measure the optical properties of the Bessel Beam  </li>
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<ul>
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<li> Beam waist width </li>
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</ul>
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<li> 3 </li>
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<li> 4</li>
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</ul>
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I divided the project up into mini-projects because I think have intermediary milestones will help me stay on track. A big part of this final project will be making sure that I'm learning at a pace that will allow me to implement several of the mini-projects listed about in a timely manner (i.e. in 9weeks). The best way to ensure that I'm learning at an appropriate pace is to build optical set-ups that cause me to demonstrate my understanding of a particular aspect of SLM technology. I let Bessel Beam and Optical Micromanipulation as a final project even though it is not a difficult  As of now my final goal ( or test of knowledge will be designing an optical trap with a crossed bessel beam and guassian beam and then measuring the optical properties of the bessel beam I create. I saved this part of the project for last because even though it is not hard I think it is a good and if I succeed in all of the successor mini-projects I should be in good shape to build the - give myself 3weeks. 1.5 weeks for each miniproject although some of the projects should take less than that and that will give me 1.5 build and test the optical trap with two bessel beams. My goal is to be that time be familiar enough with matlab and bessel beams and holography algorithms, calibrations that  should take less than 3 days.
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<h3> SLM's: What are they? </h3>
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 +
Programmable spatial light modulators (PSLM’s) are two-dimensional electrically addressable devices that function as reusable transparencies on which spatially varying amplitude or phase patterns can be written electronically, often with an output signal from a computer[http://www.ece.nmsu.edu/~migiles/publications/lctvapps.html APPLICATIONS OF PROGRAMMABLE SPATIAL LIGHT MODULATORS by Michael K. Giles]. In practice, there is cross coupling between the amplitude and phase modulation of such devices so that the modulation is really complex, although it is possible to operate them in a phase-mostly or amplitude-mostly mode.</p>
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<p style="font-family: helvetica; font-size:7pt">
 
The PSLM, we have in lab(courtesy of Justin) can only modulate phase. This presents some advantages such as:
 
The PSLM, we have in lab(courtesy of Justin) can only modulate phase. This presents some advantages such as:
 
<ul>
 
<ul>
 
<li> Better diffraction efficiency</li>
 
<li> Better diffraction efficiency</li>
 
Explanation: The diffraction efficiency of phase holograms is better than that of amplitude holograms. Why?
 
Explanation: The diffraction efficiency of phase holograms is better than that of amplitude holograms. Why?
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<li> Possible to eliminate the zeroth order beam (i.e. the undiffracted beam which allows for the possibility for all of the optical power to be used for constructing your object of interest. </li>
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<li> Ability to eliminate the zeroth order beam (i.e. the undiffracted beam which allows for the possibility for all of the optical power to be used for constructing your object of interest. </li>
 
</ul>
 
</ul>
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</p>
 
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<p style="font-family: helvetica; font-size:9pt">
 
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They are extremely useful devices that can be used as either amplitude or phase modulators for signal processing, wavefront sensing, wavefront correction, wavefront manipulation and many other applications in imaging and nonimaging optical systems.
 
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[http://www.ece.nmsu.edu/~migiles/publications/lctvapps.html SLM]
 
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</p>
 
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 +
I have decided to work with SLM's for my final project because they are extremely useful devices that can be used in a variety of ways. For example, SLM are currently used in signal processing, wavefront sensing, wavefront correction, wavefront manipulation and many other applications in imaging and nonimaging optical systems <ref>[http://www.ece.nmsu.edu/~migiles/publications/lctvapps.html APPLICATIONS OF PROGRAMMABLE SPATIAL LIGHT MODULATORS by Michael K. Giles]</ref>
 
<h3>Feasibility</h3>
 
<h3>Feasibility</h3>
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<p style="font-family: helvetica; font-size:9pt">
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"Alice laughed: "There's no use trying," she said; "one can't believe impossible things."
 
"Alice laughed: "There's no use trying," she said; "one can't believe impossible things."
 
"I daresay you haven't had much practice," said the Queen. "When I was younger, I always did it for half an hour a day. Why, sometimes I've believed as many as six impossible things before breakfast."
 
"I daresay you haven't had much practice," said the Queen. "When I was younger, I always did it for half an hour a day. Why, sometimes I've believed as many as six impossible things before breakfast."
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Alice in Wonderland."
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Alice in Wonderland."<br/>
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Although that isn't exactly my attitude, I think my project the diffraction efficiency
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</p>
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<p style="font-family: helvetica; font-size:9pt">
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<h3>Novel?</h3>
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Yes because I have never done any of these things before but I am very excited.
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While I don't think my project is impossible, I do think that it will be a challenging project to complete. For the project to be successful, I'm going to have to learn a large breath of things in a contracted amount of time. However, I think the project is still feasible. I think having mini-projects inside my big project will assist in making the project a success.
 +
- Availability of Materials : Programming : matlab, SLM: have a SLM possible to by more depending on the price.
 +
- Difficulty of projects :  Not to difficult to make them impossible. Basic premise is using what is available in the current optic and optical engineering disciplines to improve/ modify microscope or image processing methods already used in 20.345.
 +
 +
<h3>Novel</h3>
 +
The project is not novel but I will be adding new functionality to equipment that is already in lab.
 
<h3> Hopeful Accomplishments</h3>
 
<h3> Hopeful Accomplishments</h3>
 
Personally: <br/>
 
Personally: <br/>
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</ul>
 
</ul>
  
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Goals/Steps: Things that can be graded
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<h3> Final Project Proposal</h3>
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<ul>
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<li> SLM:The Beginnings </li>
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<ul>
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<li>MiniProject-a1</li>
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<ul>
+
−
<li> Calibration, pixels, crystals, diffraction to gray scale imaging </li>
+
−
<li> Learn about algorithms for holography + set up weekly meetings with someone who can explain concepts I get stuck on </li>
+
−
<li> Write script for simple lens </li>
+
−
 
+
−
<li> Test script for simple lens and then perform mini experiment using a modified version of Young's double split experiment(miniprojectA).</li>
+
−
</ul>
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</ul>
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<li>MiniProject-b: Optical Filtering </li>
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<li>MiniProject-c: Optical Filtering </li>
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<li>MiniProject-d: Optical Filtering </li>
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<li>MiniProject-e: Optical Filtering </li>
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<li>FinalMiniProject-a2: Optical Filtering </li>
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</ul>
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I divided the project up into mini-projects because ..... and also because I think have smaller sections of a project due each two weeks will help me stay on track. As of now my final good ( or test of knowledge will be designing a  .... optical trap) and then measuring the optical properties of the bessel beam I create. I saved this part of the project for last because even though it is not hard I think it is a good and if I succeed in all of the successor mini-projects I should be in good shape to build the - give myself 3weeks. 1.5 weeks for each miniproject although some of the projects should take less than that and that will give me 1.5 build and test the optical trap with two bessel beams. My goal is to be that time be familiar enough with matlab and bessel beams and holography algorithms, calibrations that  should take less than 3 days.
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</p>
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----
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<h2> Final Project Proposal</h2>
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[http://measure.mit.edu/~20.309/wiki/index.php?title=Final_Project_Proposal_Williams  Ajoke Williams - Final Project Proposal March 9.]
 
[http://measure.mit.edu/~20.309/wiki/index.php?title=Final_Project_Proposal_Williams  Ajoke Williams - Final Project Proposal March 9.]
 
Preview:  
 
Preview:  
 
Words about what the above says as always.  
 
Words about what the above says as always.  
  
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<h2> Literature Review</h2>
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<references/>
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{{Template:20.345 bottom}}

Revision as of 23:34, 10 March 2012

20.345: Bioinstrumentation Project Lab

Objectives and Literature Review

  • SLM:Project Overview
    • SLM Beginnings & Holography
      • Calibration, pixels, crystals, diffraction to gray scale imaging
      • Learn about algorithms for holography + set up weekly meetings with someone who can explain concepts I get stuck on
      • Write script for simple lens
      • Test script for simple lens and then perform mini experiment using a modified version of Young's double split experiment(miniprojectA).
  • Spiral Phase Plate Contrast & Optical Filtering
    • 1
    • 2
    • 3
    • 4
  • Bessel Beam and Optical Micromanipulation
  • Write hologram script for bessel beam
  • Measure the optical properties of the Bessel Beam
    • Beam waist width
  • 3
  • 4


I divided the project up into mini-projects because I think have intermediary milestones will help me stay on track. A big part of this final project will be making sure that I'm learning at a pace that will allow me to implement several of the mini-projects listed about in a timely manner (i.e. in 9weeks). The best way to ensure that I'm learning at an appropriate pace is to build optical set-ups that cause me to demonstrate my understanding of a particular aspect of SLM technology. I let Bessel Beam and Optical Micromanipulation as a final project even though it is not a difficult As of now my final goal ( or test of knowledge will be designing an optical trap with a crossed bessel beam and guassian beam and then measuring the optical properties of the bessel beam I create. I saved this part of the project for last because even though it is not hard I think it is a good and if I succeed in all of the successor mini-projects I should be in good shape to build the - give myself 3weeks. 1.5 weeks for each miniproject although some of the projects should take less than that and that will give me 1.5 build and test the optical trap with two bessel beams. My goal is to be that time be familiar enough with matlab and bessel beams and holography algorithms, calibrations that should take less than 3 days.

SLM's: What are they?

Programmable spatial light modulators (PSLM’s) are two-dimensional electrically addressable devices that function as reusable transparencies on which spatially varying amplitude or phase patterns can be written electronically, often with an output signal from a computerAPPLICATIONS OF PROGRAMMABLE SPATIAL LIGHT MODULATORS by Michael K. Giles. In practice, there is cross coupling between the amplitude and phase modulation of such devices so that the modulation is really complex, although it is possible to operate them in a phase-mostly or amplitude-mostly mode.</p>

The PSLM, we have in lab(courtesy of Justin) can only modulate phase. This presents some advantages such as:

  • Better diffraction efficiency

    • Explanation: The diffraction efficiency of phase holograms is better than that of amplitude holograms. Why?

  • Ability to eliminate the zeroth order beam (i.e. the undiffracted beam which allows for the possibility for all of the optical power to be used for constructing your object of interest.

I have decided to work with SLM's for my final project because they are extremely useful devices that can be used in a variety of ways. For example, SLM are currently used in signal processing, wavefront sensing, wavefront correction, wavefront manipulation and many other applications in imaging and nonimaging optical systems [1]

Feasibility

"Alice laughed: "There's no use trying," she said; "one can't believe impossible things." "I daresay you haven't had much practice," said the Queen. "When I was younger, I always did it for half an hour a day. Why, sometimes I've believed as many as six impossible things before breakfast." Alice in Wonderland."

While I don't think my project is impossible, I do think that it will be a challenging project to complete. For the project to be successful, I'm going to have to learn a large breath of things in a contracted amount of time. However, I think the project is still feasible. I think having mini-projects inside my big project will assist in making the project a success. - Availability of Materials : Programming : matlab, SLM: have a SLM possible to by more depending on the price. - Difficulty of projects : Not to difficult to make them impossible. Basic premise is using what is available in the current optic and optical engineering disciplines to improve/ modify microscope or image processing methods already used in 20.345.

Novel

The project is not novel but I will be adding new functionality to equipment that is already in lab.

Hopeful Accomplishments

Personally:

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