By Takayoshi Kobayashi, Tadashi Okada, Tetsuro Kobayashi, Keith A. Nelson, Sandro de Silvestri
Ultrafast Phenomena XIV offers the newest advances in ultrafast technology, together with ultrafast laser and size know-how in addition to reports of ultrafast phenomena. Pico-, femto-, and atosecond strategies correct in physics, chemistry, biology, and engineering are awarded. Ultrafast know-how is now having a profound influence inside quite a lot of purposes, between them imaging, fabric diagnostics, and transformation and high-speed optoelectronics. This booklet summarizes effects awarded on the 14th Ultrafast Phenomena convention and studies the state-of-the-art during this vital and quickly advancing field.
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Additional info for Ultrafast Phenomena XIV: Proceedings of the 14th International Conference, Niigata, Japan, July 25--30, 2004
By varying the distance between the optical elements, optimum matching of the free-space laser mode (TEMoo) to the lowest-order waveguide mode could be achieved. In addition, the focal spot was monitored using a CCDcamera. The prism-compressor, integrated into the CPO, was adjusted in order to obtain maximum broadening. 1. Hollow waveguides Spectral broadening in a hollow fiber filled with noble gas, has already been utilized to generate pulses below 5 fs in duration . Due to the relatively large interaction area, laser pulses out of a kHz - amplifier system had to be used.
Krausz, Nature, 419, 803, 2002. 3. R. Kienberger, M. Hentschel, M. Uiberacker, C. Spielmann, M. Kitzler, A. Scrinzi, M. Wieland, T. Westerwalbesloh, U. Kleineberg, U. Heinzmann, M. Drescher, and F. Krausz, Science, 297, 1144, 2002. 4. P. B. Corkum, Phys. Rev. , 71, 1994, 1993. 5. A. Baltuska, Th. Udem, M. Uiberacker, M. Hentschel, E. Goulielmakis, Ch. Gohle, R. Holzwarth, V. S. Yakovlev, A. Scrinzi, T. W. Hansch, and F. Krausz, Nature, 421, 611, 2003. 6. J. Itatani, F. L. Yu. , F. B. Corkum, , Phys.
2. Pulse spectrum and recompressed pulse intensity and phase measured by FROG after cavity enhancement, (a) and (c) show the incident (dotted) and intracavity (soHd) pulse spectrum for two different incident pulse bandwidths. Solid gray line indicates the calculated spectral transferftmctionbased on the third-order dispersion of the intracavity fused silica, (b) and (d) show the corresponding pulse measurements of 39 fs and 52 fs pulses (FWHM), respectively. 4. Conclusions In conclusion, we have demonstrated the use of fs enhancement cavities for amplifying fs pulse energies through coherent addition of multiple pulses in a highfinesse cavity.