Generation of isolated attosecond pulses with 20 to 28 femtosecond lasers.

Isolated attosecond pulses are powerful tools for exploring electron dynamics in matter. So far, such extreme ultraviolet pulses have only been generated using high power, few-cycle lasers, which are very difficult to construct and operate. We propose and demonstrate a technique called generalized double optical gating for generating isolated attosecond pulses with 20 fs lasers from a hollow-core fiber and 28 fs lasers directly from an amplifier. These pulses, generated from argon gas, are measured to be 260 and 148 as by reconstructing the streaked photoelectron spectrograms. This scheme, with a relaxed requirement on laser pulse duration, makes attophysics more accessible to many laboratories that are capable of producing such multicycle laser pulses.

[1]  K. Midorikawa,et al.  Generation of extreme ultraviolet continuum radiation driven by a sub-10-fs two-color field. , 2006, Optics express.

[2]  Z. Chang,et al.  Double optical gating of high-order harmonic generation with carrier-envelope phase stabilized lasers. , 2008, Physical review letters.

[3]  Eleftherios Goulielmakis,et al.  The accurate FROG characterization of attosecond pulses from streaking measurements , 2008 .

[4]  R. Holzwarth,et al.  Attosecond spectroscopy in condensed matter , 2007, Nature.

[5]  U. Kleineberg,et al.  Single-Cycle Nonlinear Optics , 2008, Science.

[6]  L. Poletto,et al.  Isolated Single-Cycle Attosecond Pulses , 2006, Science.

[7]  Z. Chang.  Single attosecond pulse and xuv supercontinuum in the high-order harmonic plateau , 2004 .

[8]  Accurate Retrieval of Satellite Pulses of Single Isolated Attosecond Pulses , 2009 .

[9]  Fabien Quéré,et al.  Frequency-resolved optical gating for complete reconstruction of attosecond bursts , 2005 .

[10]  P. Corkum,et al.  Attosecond streak camera. , 2002, Physical review letters.

[11]  D. Villeneuve,et al.  Efficient polarization gating of high-order harmonic generation by polarization-shaped ultrashort pulses , 2005 .

[12]  Andrew G. Glen,et al.  APPL , 2001 .

[13]  Eric Constant,et al.  Time-gated high-order harmonic generation , 2003 .

[14]  George D. Tsakiris,et al.  Generation of intense continuum extreme-ultraviolet radiation by many-cycle laser fields , 2007 .

[15]  Z. Chang,et al.  Power locking of high-repetition-rate chirped pulse amplifiers , 2007 .

[16]  François Salin,et al.  Amplifying laser pulses to the terawatt level at a 1-kilohertz repetition rate , 2000 .

[17]  U. Heinzmann,et al.  Time-resolved atomic inner-shell spectroscopy , 2002, Nature.

[18]  P. Balcou,et al.  Observation of a Train of Attosecond Pulses from High Harmonic Generation , 2001, Science.

[19]  He Wang,et al.  Practical issues of retrieving isolated attosecond pulses , 2009 .