Ultrafast Holographic Image Recording by Single Shot Femtosecond Spectral Hole Burning

摘要

The principal goal of this project was that of capturing a holographic image of a unique ultrafast event on subpicosecond time scale in a single recording exposure which was indeed practically possible. This was achieved, on one hand, by investigating spectral hole burning properties of a range of organic materials, and on the other hand, by carefully optimizing the experimental conditions. After several unsuccessful attempts, finally success was achieved by modifying a previously known spectral hole burning materials in way, which increased the recording efficacy by more than one order of magnitude. This allowed us to record image holograms with 150-fs duration pulses without need to accumulate the SHB effect from many exposures. Results of this research show that it is possible to perform optical recording of data in frequency- domain on ultrafast time scale. These results can be used also as a new diagnostic tool for femtosecond dynamics in various ultrafast optical interactions.