Finding a Piezo Resonance: Difference between revisions
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The resonant frequency of the piezo you are using is important to know in some situations. For example, if a cavity mirror has a piezo it is important to know the piezo's resonant frequency for locking purposes. Tyler green discusses this on page 34 in his [http://yavuzlab.physics.wisc.edu/pdfs/green_thesis.pdf thesis]. |
The resonant frequency of the piezo you are using is important to know in some situations. For example, if a cavity mirror has a piezo it is important to know the piezo's resonant frequency for locking purposes. Tyler green discusses this on page 34 in his [http://yavuzlab.physics.wisc.edu/pdfs/green_thesis.pdf thesis]. |
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As an example, you might have a setup like the one shown below. Both the laser and the cavity have piezos on them. Each piezo will need to be hooked up to a function generator. |
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[[File:PiezoResonance2.png|thumb|right|200px|Figure 3. Piezo oscillating with small sinusoidal voltage]] |
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[[File:PiezoResonance3.png|thumb|right|200px|Figure 4. Piezo is close to resonance, the peaks begin to oscillate with larger amplitude]] |
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* Ramp the laser piezo and align the cavity so that you can see transmission peaks with the photo diode (figure 2). |
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[[File:PiezoResonance2.png|thumb|right|300px]] |
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[[File:PiezoResonance3.png|thumb|right|300px]] |
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Revision as of 23:08, 23 May 2014
The resonant frequency of the piezo you are using is important to know in some situations. For example, if a cavity mirror has a piezo it is important to know the piezo's resonant frequency for locking purposes. Tyler green discusses this on page 34 in his thesis.
As an example, you might have a setup like the one shown below. Both the laser and the cavity have piezos on them. Each piezo will need to be hooked up to a function generator.
- Ramp the laser piezo and align the cavity so that you can see transmission peaks with the photo diode (figure 2).