Fluorescent dye showing a pinpoint of laser light
Bildnummer 11892784
| Pinpoint of light. Cuvette with dye showing the pinpoint of light effect produced by a laser. It has implications for laser use in microscopy,microsurgery and optical memory devices. The cuvette contains safranin dye which normally needs green light to make it fluoresce. The light beam (at upper centre) is caused by green laser light. The spot (lower centre) is caused by an infrared beam of a mode-locked pulsed laser which has been focused by a lens. Photons in this beam can be absorbed at the same time by the same molecule and so add their energies together. This 2-photon absorption only occurs at high intensities at the beam's focal point,leading to a precise pinpoint | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / Amos, Dr. Brad |
| Bildgröße: | 3577 px × 5274 px |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Restrictions: | - |
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