https://optics.eee.nottingham.ac.uk/w/index.php?title=OSAM&feed=atom&action=history
OSAM - Revision history
2024-03-28T15:39:55Z
Revision history for this page on the wiki
MediaWiki 1.27.1
https://optics.eee.nottingham.ac.uk/w/index.php?title=OSAM&diff=338&oldid=prev
Sds at 17:31, 25 September 2008
2008-09-25T17:31:11Z
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<td colspan='2' style="background-color: white; color:black; text-align: center;">← Older revision</td>
<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 17:31, 25 September 2008</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* vector contrast imaging of Lamb waves (on thin samples)</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* vector contrast imaging of Lamb waves (on thin samples)</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* thin film thickness measurement by change in SAW velocity</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* thin film thickness measurement by change in SAW velocity</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* SRAS (spatially resolved acoustic spectroscopy)</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* <ins class="diffchange diffchange-inline">[[</ins>SRAS<ins class="diffchange diffchange-inline">]] </ins>(spatially resolved acoustic spectroscopy)</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* determination of inherent material nonlinearity</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* determination of inherent material nonlinearity</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* aberration correction (adaptive acoustics, acoustic wavefront sensor) for "difficult materials"</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* aberration correction (adaptive acoustics, acoustic wavefront sensor) for "difficult materials"</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>This page will be updated with more information, but for now here's a link to a page about [http://optics.eee.nottingham.ac.uk/ultrasonic_microscopy.html ultrasonic microscopy] (a couple of years out of date).</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>This page will be updated with more information, but for now here's a link to a page about [http://optics.eee.nottingham.ac.uk/ultrasonic_microscopy.html ultrasonic microscopy] (a couple of years out of date).</div></td></tr>
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Sds
https://optics.eee.nottingham.ac.uk/w/index.php?title=OSAM&diff=336&oldid=prev
Sds: New page: = O-SAM: Optical Scanning Acoustic Microscope = We have two O-SAM instruments (for historical reasons we call these the O-SAM and the ARRO-SAM). They each use a Q-switched mode locked las...
2008-09-25T17:05:57Z
<p>New page: = O-SAM: Optical Scanning Acoustic Microscope = We have two O-SAM instruments (for historical reasons we call these the O-SAM and the ARRO-SAM). They each use a Q-switched mode locked las...</p>
<p><b>New page</b></p><div>= O-SAM: Optical Scanning Acoustic Microscope =<br />
<br />
We have two O-SAM instruments (for historical reasons we call these the O-SAM and the ARRO-SAM). They each use a Q-switched mode locked laser to excite surface acoustic waves (SAWs), which are then detected using a CW laser. Excitation frequencies used are 82MHz and harmonics thereof. A spatial light modulator controls the distribution of light from the excitation laser, affecting the acoustic field that we generate.<br />
<br />
The O-SAMs can be used for a wide range of experiments:<br />
<br />
* vector contrast imaging of Rayleigh waves<br />
* vector contrast imaging of Lamb waves (on thin samples)<br />
* thin film thickness measurement by change in SAW velocity<br />
* SRAS (spatially resolved acoustic spectroscopy)<br />
* determination of inherent material nonlinearity<br />
* aberration correction (adaptive acoustics, acoustic wavefront sensor) for "difficult materials"<br />
<br />
This page will be updated with more information, but for now here's a link to a page about [http://optics.eee.nottingham.ac.uk/ultrasonic_microscopy.html ultrasonic microscopy] (a couple of years out of date).</div>
Sds