tag:blogger.com,1999:blog-40737087301714834372024-02-07T02:10:56.421-08:00Atom Cooling and Trapping at Willamette UniversityMichaela Kleinerthttp://www.blogger.com/profile/01055321802245087684noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-4073708730171483437.post-29422933992314674812011-10-21T17:44:00.000-07:002011-10-28T16:27:18.530-07:00NSF grant!<div style="text-align: justify;">Big news! We have recently been awarded an NSF RUI grant. Check out more details about the grant <a href="http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1068112&WT.z_pims_id=13622">here</a>.<br />
There's also a photo gallery in the <a href="http://www.statesmanjournal.com/apps/pbcs.dll/gallery?Avis=J0&Dato=20111020&Kategori=COMMUNITIES&Lopenr=110200813&Ref=PH">Statesman Journal</a>. <br />
</div>Michaela Kleinerthttp://www.blogger.com/profile/01055321802245087684noreply@blogger.comtag:blogger.com,1999:blog-4073708730171483437.post-4096726244084764902011-06-15T12:22:00.000-07:002011-06-15T12:22:44.593-07:00Summer 2011<div style="text-align: justify;">This summer Hayley Whitson and I are working on a high-power pulsed laser system (DS20HE-355 from Photonics Industries). We have the laser + power supply, but no chiller so far, and no idea if the laser will be working or not. Guess we'll find out! If it turns on just fine, we will use it as a pump laser for a home-built dye laser system. </div>Michaela Kleinerthttp://www.blogger.com/profile/01055321802245087684noreply@blogger.comtag:blogger.com,1999:blog-4073708730171483437.post-76354796907778050532010-11-16T15:46:00.001-08:002010-12-15T09:04:55.419-08:00Fall 2010/Spring 2011Garrett Potter is working on the vacuum system and Zeeman slower for the calcium MOT as part of his senior capstone project. We are currently thinking about a slower with permanent magnets, similar to this <a href="http://arxiv.org/PS_cache/physics/pdf/0702/0702074v2.pdf">paper by Ovchinnikov</a>. Not having to wrap coils and run high currents through them with the potential danger of shorting them is very tempting.<br />
<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhJHcGnQ86yDXdRGX25qnJ_HlYvuhqRPJ-kFGH-yS4IyMGl8uKaiA60ELffZeYaYFItqkAP2vE0On1yNT-16KWKfolU6m9ICgjt2-PR9yfTS-UVVDwWQn1oXPlK1HfgOxTgIT-OYw3zs3c/s1600/Picture16.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="162" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhJHcGnQ86yDXdRGX25qnJ_HlYvuhqRPJ-kFGH-yS4IyMGl8uKaiA60ELffZeYaYFItqkAP2vE0On1yNT-16KWKfolU6m9ICgjt2-PR9yfTS-UVVDwWQn1oXPlK1HfgOxTgIT-OYw3zs3c/s320/Picture16.jpg" width="320" /></a></div><br />
Kristen Norton is working on the laser system and build-up cavity for the calcium MOT, also as part of her senior capstone project. She has already built the mount for the tapered amplifier that we will use to increase the power of a diode laser before frequency doubling it.<br />
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Sam Nhim is finishing up a paper from our summer research.<br />
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Matthew Bateman is transferring the working PI design from a test board to a printed circuit board using PCBExpress.<br />
<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhuzhhgQMwh3OZV9bQRpWgBrDcVDhYMQ1kAhJLkLPTjJr9-IEIad0UF5ZdxDlwGS8Quvrjs0eh92nY-I7wc0CYfsKpIngC5r71xbtq4WvgSMM5j8aQcZUH9BIL9VASIWdDZc4VSj3jcNgU/s1600/Picture17.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="247" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhuzhhgQMwh3OZV9bQRpWgBrDcVDhYMQ1kAhJLkLPTjJr9-IEIad0UF5ZdxDlwGS8Quvrjs0eh92nY-I7wc0CYfsKpIngC5r71xbtq4WvgSMM5j8aQcZUH9BIL9VASIWdDZc4VSj3jcNgU/s320/Picture17.jpg" width="320" /></a></div>Michaela Kleinerthttp://www.blogger.com/profile/01055321802245087684noreply@blogger.comtag:blogger.com,1999:blog-4073708730171483437.post-33242756917321331952010-11-16T15:45:00.005-08:002010-12-15T08:53:39.784-08:00Summer 2010This summer, Samantha Nhim and Kristen Norton were working with me on rubidium absorption spectroscopy using circularly polarized light. Our results have been presented at the NW APS meeting and at the M.J. Murdock conference.<br />
<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhBupF64xW-RwwmenW2b1X1lAPFkys8bVdtKYsyP3z_gRQXiKdFiVowCCkNSeUJW4TjFguVE52BjuvCYy1AocFbwh4oM0TJF41-BkGFASJ9sbwUQRmSKt3uZxeovIAnSMupvgdpITFqOSc/s1600/Picture14.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhBupF64xW-RwwmenW2b1X1lAPFkys8bVdtKYsyP3z_gRQXiKdFiVowCCkNSeUJW4TjFguVE52BjuvCYy1AocFbwh4oM0TJF41-BkGFASJ9sbwUQRmSKt3uZxeovIAnSMupvgdpITFqOSc/s320/Picture14.jpg" width="240" /></a></div>Michaela Kleinerthttp://www.blogger.com/profile/01055321802245087684noreply@blogger.comtag:blogger.com,1999:blog-4073708730171483437.post-2640572498524508542010-11-16T15:45:00.001-08:002010-12-15T08:43:24.421-08:00Fall 2009/Spring 2010 Two of our seniors, Elyse McEntee and CJ Koll, were working on my project as part of their senior capstone project (this year for the last time only one semester long).<br />
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Elyse's focus were the PI controllers for the laser system. She built several circuits which could be connected in a modular way to allow a high degree of flexibility and adjust the whole circuit easily for many different purposes.<br />
<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhvsXelMQ7bXMLb7d-lwp-eHd2r-AinWPQUzNyKpvPbd-mWMOw5LguYqu3tMG3RzxiGwGVCoRiRS3NN1tWiY2zJgapQiPRRP9GZ4qX7N6-yzzOCHud9u5942Y_0FbvioSy1WZnurijJHRA/s1600/Picture9.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="242" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhvsXelMQ7bXMLb7d-lwp-eHd2r-AinWPQUzNyKpvPbd-mWMOw5LguYqu3tMG3RzxiGwGVCoRiRS3NN1tWiY2zJgapQiPRRP9GZ4qX7N6-yzzOCHud9u5942Y_0FbvioSy1WZnurijJHRA/s400/Picture9.jpg" width="400" /></a></div>Elyse also wrote two LabView programs that read in signals from the circuits and from our vacuum gauge.<br />
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CJ began calculations on a frequency doubling cavity which will be used to trap the alkaline-earth atom.<br />
<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgpk4nah_bjWoMnfc0Y8WyPCFHumVNtuq4qXr_OmP2MNlMx4-lndxa_F7AJupjFtlfuaZgtkszWYP8nFYJ7HdT_nZ2bwM_IP1_8kRe6br1FejKnEZpQD5nfi3joji-bSSOeUJCX287kz4I/s1600/Picture11.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="208" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgpk4nah_bjWoMnfc0Y8WyPCFHumVNtuq4qXr_OmP2MNlMx4-lndxa_F7AJupjFtlfuaZgtkszWYP8nFYJ7HdT_nZ2bwM_IP1_8kRe6br1FejKnEZpQD5nfi3joji-bSSOeUJCX287kz4I/s320/Picture11.jpg" width="320" /></a></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbOFbm2i-eOX01Ao7L1CeSmymkxq9gk3PFDr5v3xCEueVfGDx-FZABJGMfSEnnVcsm0u9oKBVMNuHPhskjk1H8p8rVRmoeWCUqJ6ot_1DOi2gB1o7UKfRK81PZribkZ7zgnQG59NtjojY/s1600/Picture12.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbOFbm2i-eOX01Ao7L1CeSmymkxq9gk3PFDr5v3xCEueVfGDx-FZABJGMfSEnnVcsm0u9oKBVMNuHPhskjk1H8p8rVRmoeWCUqJ6ot_1DOi2gB1o7UKfRK81PZribkZ7zgnQG59NtjojY/s320/Picture12.jpg" width="265" /></a></div><div class="separator" style="clear: both; text-align: center;"><br />
</div> My lab also got an upgrade: A brand new (and heavy!) optical table.<br />
<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgpS_Dxu2Rmm5ZHuIGXpcfgKhGYBbhV9rOrjsB5urCOZdaMPMmujn-t2DlfVZdXC-97JsIEAUt0pQ6dBxSfRX5xMZBuZBPdBpi77NLJSCpcSOpfDI5EBRgOsJ8KOppwTh83vl6RhUw6LjA/s1600/Picture7.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="239" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgpS_Dxu2Rmm5ZHuIGXpcfgKhGYBbhV9rOrjsB5urCOZdaMPMmujn-t2DlfVZdXC-97JsIEAUt0pQ6dBxSfRX5xMZBuZBPdBpi77NLJSCpcSOpfDI5EBRgOsJ8KOppwTh83vl6RhUw6LjA/s320/Picture7.jpg" width="320" /></a></div>Michaela Kleinerthttp://www.blogger.com/profile/01055321802245087684noreply@blogger.comtag:blogger.com,1999:blog-4073708730171483437.post-83862691834818411202010-11-16T15:44:00.001-08:002010-12-14T19:46:43.638-08:00Summer 2009<span class="Apple-style-span" style="-webkit-text-size-adjust: none; font-family: Verdana, sans-serif; font-size: 12px; line-height: 18px;"><span class="style_2" style="font-size: 13px; line-height: 19px;">My first participation in Willamette's Science Collaborative Research Project, <a href="http://www.willamette.edu/cla/scrp/">SCRP</a>. Garrett Potter and Marc Whitehead were working with me for 9 weeks between June and August and finished the assembly of the laser system. </span></span><br />
<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiV0tpm7cnRM0NuIevwb_3PickxTB78yjauxXcp7WtQ5JaYw923VjUHcl2rlR5FqHERhvGFlEBIJOqg1Z8qTMfNhoQfusLzHtjTqDz-JlSWrPC3uNgSuDAuB8CjSoMlCkhQXjmB3fSofqA/s1600/Picture4.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="156" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiV0tpm7cnRM0NuIevwb_3PickxTB78yjauxXcp7WtQ5JaYw923VjUHcl2rlR5FqHERhvGFlEBIJOqg1Z8qTMfNhoQfusLzHtjTqDz-JlSWrPC3uNgSuDAuB8CjSoMlCkhQXjmB3fSofqA/s400/Picture4.jpg" width="400" /></a></div><div class="separator" style="clear: both; text-align: center;"><br />
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<span class="Apple-style-span" style="-webkit-text-size-adjust: none; font-family: Verdana, sans-serif; font-size: 12px; line-height: 18px;"><span class="style_2" style="font-size: 13px; line-height: 19px;">And here are our first ultracold Rubidium atoms (</span></span><span class="Apple-style-span" style="-webkit-text-size-adjust: none; font-family: Verdana, sans-serif; font-size: 13px; line-height: 19px;">created on 07/01/09):</span><br />
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<span class="Apple-style-span" style="-webkit-text-size-adjust: none; font-family: Verdana, sans-serif; font-size: 12px; line-height: 18px;"> </span><span class="Apple-style-span" style="-webkit-text-size-adjust: none; font-family: Verdana, sans-serif; font-size: 12px; line-height: 18px;">Check out our SCRP story</span><span class="Apple-style-span" style="-webkit-text-size-adjust: none; font-family: Verdana, sans-serif; font-size: 12px; line-height: 18px;"> </span><span class="Apple-style-span" style="-webkit-text-size-adjust: none; font-family: Verdana, sans-serif; font-size: 12px; line-height: 18px;"><a href="http://willamette.edu/people/archives/2009/08/summer_science%20.html" style="color: #999999; text-decoration: underline;" title="http://willamette.edu/people/archives/2009/08/summer_science .html">here</a></span><span class="Apple-style-span" style="-webkit-text-size-adjust: none; font-family: Verdana, sans-serif; font-size: 12px; line-height: 18px;">.</span><br />
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</span>Michaela Kleinerthttp://www.blogger.com/profile/01055321802245087684noreply@blogger.comtag:blogger.com,1999:blog-4073708730171483437.post-34260496353085303792010-11-16T15:43:00.000-08:002010-12-15T08:20:40.083-08:00Fall 2008/Spring 2009<div class="paragraph_style" style="color: black; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; opacity: 1; padding-bottom: 5px; padding-top: 0pt; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none;"><table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: left; text-align: left;"><tbody>
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<tr><td class="tr-caption" style="text-align: center;">The first optical elements are being assembled.</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">The lab, still pretty empty.</td></tr>
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<span class="Apple-style-span" style="-webkit-text-size-adjust: none; font-family: Verdana, sans-serif; font-size: 13px; line-height: 19px;">My first year here at Willamette. We used the Fall 2008/Spring 2009 year to prepare the lab for work on ultracold atoms, purchased the necessary equipment to get us started and began initial assembly of the apparatus. I am very happy that several students were interested in helping me with this task. They assembled a laser diode from scratch and worked on finding the right wavelength by sending the laser beam through a glass cell containing room temperature rubidium atoms and looking for an absorption signal.</span></div><table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: left; text-align: left;"><tbody>
<tr><td style="text-align: center;"><img height="133" src="http://www.willamette.edu/~mkleiner/Atom_Cooling_%26_Trapping/Research/Pages/Fall08_Spring09_files/Media/DSC_0108/DSC_0108.jpg?disposition=download" style="margin-left: auto; margin-right: auto;" width="200" /></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Garrett Potter</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Matt Titus</td></tr>
</tbody></table><span class="Apple-style-span" style="-webkit-text-size-adjust: none; font-family: Verdana, sans-serif; font-size: 13px; line-height: 19px;"><span class="Apple-style-span" style="-webkit-text-size-adjust: auto; font-family: 'Times New Roman'; font-size: medium; line-height: normal;"><span class="Apple-style-span" style="-webkit-text-size-adjust: none; font-family: Verdana, sans-serif; font-size: 13px; line-height: 19px;">Garrett Potter and Matt Titus began work on PID controllers, electronic devices which allow us to “lock” the laser frequency. </span></span>Their initial work was continued during the Spring 2009 semester when students mass-produced photodiodes and differential amplifiers - two components that are part of the complete controller circuit - as part of the ATEP class. Garrett and Matt were joined by Kyle Kotaich, Marc Whitehead and Thomas Eliot for part of the semester, who adjusted the laser frequency and took first absorption spectroscopy measurements. </span><br />
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<tr><td class="tr-caption" style="text-align: center;">Marc Whitehead</td></tr>
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<tr><td style="text-align: center;"><img height="133" src="http://www.willamette.edu/~mkleiner/Atom_Cooling_%26_Trapping/Research/Pages/Fall08_Spring09_files/Media/DSC_0107/DSC_0107.jpg?disposition=download" style="margin-left: auto; margin-right: auto;" width="200" /></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Thomas Eliott</td></tr>
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<tr><td style="text-align: center;"><img height="133" src="http://www.willamette.edu/~mkleiner/Atom_Cooling_%26_Trapping/Research/Pages/Fall08_Spring09_files/Media/DSC_0106/DSC_0106.jpg?disposition=download" style="margin-left: auto; margin-right: auto;" width="200" /></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Kyle Kotaich</td></tr>
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<tr><td style="text-align: center;"><img height="133" src="http://www.willamette.edu/~mkleiner/Atom_Cooling_%26_Trapping/Research/Pages/Fall08_Spring09_files/Media/DSC_0101/DSC_0101.jpg?disposition=download" style="margin-left: auto; margin-right: auto;" width="200" /></td></tr>
<tr><td class="tr-caption" style="text-align: center;">More baking.</td></tr>
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<tr><td style="text-align: center;"><img height="133" src="http://www.willamette.edu/~mkleiner/Atom_Cooling_%26_Trapping/Research/Pages/Fall08_Spring09_files/Media/DSC_0100/DSC_0100.jpg?disposition=download" style="margin-left: auto; margin-right: auto;" width="200" /></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Baking the vacuum chamber.</td></tr>
</tbody></table><span class="Apple-style-span" style="-webkit-text-size-adjust: none; font-family: Verdana, sans-serif; font-size: 13px; line-height: 19px;">We also assembled and baked the vacuum chamber. This was probably the most nerve-wracking part as I was not sure that the chamber had survived the transport from Rochester without any damage. Turns out, it has. After a week of baking we were in the low 10<sup>-9</sup> Torr range already, and the pressure has dropped to the middle 10<sup>-10</sup> Torr since.</span></div><div><table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: right; text-align: center;"><tbody>
<tr><td style="text-align: center;"><img height="133" src="http://www.willamette.edu/~mkleiner/Atom_Cooling_%26_Trapping/Research/Pages/Fall08_Spring09_files/Media/DSC_0089/DSC_0089.jpg?disposition=download" style="margin-left: auto; margin-right: auto;" width="200" /></td></tr>
<tr><td class="tr-caption" style="text-align: center;">The clean chamber.</td></tr>
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<tr><td style="text-align: center;"><img height="133" src="http://www.willamette.edu/~mkleiner/Atom_Cooling_%26_Trapping/Research/Pages/Fall08_Spring09_files/Media/DSC_0090/DSC_0090.jpg?disposition=download" style="margin-left: auto; margin-right: auto;" width="200" /></td></tr>
<tr><td class="tr-caption" style="text-align: center;">The clean chamber.</td></tr>
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</div></div>Michaela Kleinerthttp://www.blogger.com/profile/01055321802245087684noreply@blogger.com