| Autor: |
Schwartz, Osip, Axelrod, Jeremy J., Haslinger, Philipp, Ophus, Colin, Glaeser, Robert M., Müller, Holger |
| Rok vydání: |
2016 |
| Předmět: |
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| Zdroj: |
Optics Express Vol. 25, Issue 13, pp. 14453-14462 (2017) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1364/OE.25.014453 |
| Popis: |
Manipulating free-space electron wave functions with laser fields can bring about new electron-optical elements for transmission electron microscopy. In particular, a Zernike phase plate would enable high-contrast imaging of soft matter, leading to new opportunities in structural biology and materials science. A Zernike plate can be implemented using a tight, intense CW laser focus that shifts the phase of the electron wave by the ponderomotive potential. Here, we use a near-concentric cavity to focus 7.5 kW of circulating laser power at 1064 nm into a 7 $\mu$m waist, setting a record for CW laser intensity and establishing a pathway to ponderomotive phase contrast TEM. |
| Databáze: |
arXiv |
| Externí odkaz: |
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