Abstract
We find strong self-defocusing in bacteriorhodopsin films in the near IR with powers in the tens of milliwatts. The defocused beam acquires a ring pattern because of spatial self-phase modulation. We also demonstrate efficient four-wave mixing with phase-conjugate reflectivities of 26%. We discuss the origin of this high nonlinearity.
| Original language | English |
|---|---|
| Pages (from-to) | 241-243 |
| Number of pages | 3 |
| Journal | Optics Letters |
| Volume | 17 |
| Issue number | 4 |
| DOIs | |
| State | Published - 15 Feb 1992 |
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