Hinze, U.; Egbert, A.; Chichkov, B.; Eidmann, K.: Generation of picosecond hard-x-ray pulses in a femtosecond-laser-driven x-ray diode. Optics Letters 29 (17), pp. 2079 - 2081 (2004)

Lan, K.; Fill, E.; Meyer-ter-Vehn, J.: Photopumping of XUV lasers by XFEL radiation. Laser and Particle Beams 22 (3), pp. 261 - 266 (2004)

Marcinkevicius, A.; Tommasini, R.; Tsakiris, G. D.; Witte, K. J.; Gaizauskas, E.; Teubner, U.: Frequency doubling of multi-terawatt femtosecond pulses. Applied Physics B-Lasers and Optics 79 (5), pp. 547 - 554 (2004)

Stein, J.; Fill, E.; Habs, D.; Pretzler, G.; Witte, K.: Hot electron diagnostics using X-rays and Cerenkov radiation. Laser and Particle Beams 22 (3), pp. 315 - 321 (2004)

Dreher, M.; Takahashi, E.; Meyer-ter-Vehn, J.; Witte, K. J.: Observation of superradiant amplification of ultrashort laser pulses in a plasma. Physical Review Letters 93 (9), 095001 (2004)

Goulielmakis, E.; Uiberacker, M.; Kienberger, R.; Baltuska, A.; Yakovlev, V.; Scrinzi, A.; Westerwalbesloh, T.; Kleineberg, U.; Heinzmann, U.; Drescher, M. et al.; Krausz, F.: Direct measurement of light waves. Science 305 (5688), pp. 1267 - 1269 (2004)

Bezuhanov, K.; Dreischuh, A.; Paulus, G. G.; Schätzel, M. G.; Walther, H.: Vortices in femtosecond laser fields. Optics Letters 29 (16), pp. 1942 - 1944 (2004)

Kaluza, M.; Schreiber, J.; Santala, M. I. K.; Tsakiris, G. D.; Eidmann, K.; Meyer-ter-Vehn, J.; Witte, K. J.: Influence of the laser prepulse on proton acceleration in thin-foil experiments. Physical Review Letters 93 (4), 045003 (2004)

Keilmann, F.; Gohle, C.; Holzwarth, R.: Time-domain mid-infrared frequency-comb spectrometer. Optics Letters 29 (13), pp. 1542 - 1544 (2004)

Fernandez, A.; Fuji, T.; Poppe, A.; Fürbach, A.; Krausz, F.; Apolonski, A.: Chirped-pulse oscillators: a route to high-power femtosecond pulses without external amplification. Optics Letters 29 (12), pp. 1366 - 1368 (2004)

Fischer, M.; Kolachevsky, N.; Zimmermann, M.; Holzwarth, R.; Udem, T.; Hänsch, T. W.; Abgrall, M.; Grunert, J.; Maksimovic, I.; Bize, S. et al.; Marion, H.; Dos Santos, F. P.; Lemonde, P.; Santarelli, G.; Laurent, P.; Clairon, A.; Salomon, C.; Haas, M.; Jentschura, U. D.; Keitel, C. H.: New limits on the drift of fundamental constants from laboratory measurements. Physical Review Letters 92 (23), 230802 (2004)

Fischer, M.; Kolachevsky, N.; Zimmermann, M.; Holzwarth, R.; Udem, T.; Hänsch, T. W.; Abgrall, M.; Grünert, J.; Maksimovic, I.; Bize, S. et al.; Marion, H.; Pereira Dos Santos, F.; Lemonde, P.; Santarelli, G.; Laurent, P.; Clairon, A.; Salomon, C.; Haas, M.; Jentschura, U. D.; Keitel, C. H.: New Limits on the Drift of Fundamental Constants from Laboratory Measurements. Physical Review Letters 92 (23), 230802 (2004)

Tommasini, R.; Eidmann, K.; Kawachi, T.; Fill, E. E.: Preplasma conditions for operation of 10-Hz subjoule femtosecond-laser-pumped nickel-like x-ray lasers. Physical Review E 69 (6), 066404 (2004)

Cowan, T. E.; Fuchs, J.; Ruhl, H.; Kemp, A.; Audebert, P.; Roth, M.; Stephens, R.; Barton, I.; Blazevic, A.; Brambrink, E. et al.; Cobble, J.; Fernandez, J.; Gauthier, J. C.; Geissel, M.; Hegelich, M.; Kaae, J.; Karsch, S.; Le Sage, G. P.; Letzring, S.; Manclossi, M.; Meyroneinc, S.; Newkirk, A.; Pepin, H.; Renard-LeGalloudec, N.: Ultralow emittance, multi-MeV proton beams from a laser virtual-cathode plasma accelerator. Physical Review Letters 92 (20), 204801 (2004)

Teubner, U.; Eidmann, K.; Wagner, U.; Andiel, U.; Pisani, F.; Tsakiris, G. D.; Witte, K.; Meyer-ter-Vehn, J.; Schlegel, T.; Forster, E.: Harmonic emission from the rear side of thin overdense foils irradiated with intense ultrashort laser pulses. Physical Review Letters 92 (18), 185001 (2004)

Milani, M.; Ballerini, M.; Batani, D.; Squadrini, F.; Cotelli, F.; Donin, C. L. L.; Poletti, G.; Pozzi, A.; Eidmann, K.; Stead, A. et al.; Lucchini, G.: High resolution microscopy techniques for the analysis of biological samples: a comparison. European Physical Journal-Applied Physics 26 (2), pp. 123 - 131 (2004)

Eremina, E.; Liu, X.; Rottke, H.; Sandner, W.; Schätzel, M. G.; Dreischuh, A.; Paulus, G. G.; Walther, H.; Moshammer, R.; Ullrich, J.: Influence of molecular structure on double ionization of N-2 and O-2 by high intensity ultrashort laser pulses. Physical Review Letters 92 (17), 173001 (2004)

Seres, E.; Seres, J.; Krausz, F.; Spielmann, C.: Generation of coherent soft-x-ray radiation extending far beyond the titanium L edge. Physical Review Letters 92 (16), 163002 (2004)

Pisani, F.; Andiel, U.; Eidmann, K.; Witte, K.; Uschmann, I.; Morak, A.; Forster, E.; Sauerbrey, R.: Influence of the density gradient on the duration of Si-K alpha pulses generated by a double femtosecond-laser pulse. Applied Physics Letters 84 (15), pp. 2772 - 2774 (2004)

Centurion, M.; Pu, Y.; Liu, Z.; Psaltis, D.; Hänsch, T. W.: Holographic recording of laser-induced plasma. Optics Letters 29 (7), pp. 772 - 774 (2004)