| Original Articles |
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Laser-Duration Dependence of Emission Properties of High-Order Harmonic Generation |
| GE Yu-Cheng |
| Department of Technical Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 |
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| Cite this article: |
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GE Yu-Cheng 2008 Chin. Phys. Lett. 25 1305-1308 |
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Abstract Quantitative investigations are made for the laser-duration dependence of the emission properties of high-order harmonic generation (HHG). HHG emission properties produced by few-cycle lasers show some useful characteristics. The cutoff energy is less than that by laser for infinite duration. The single energy distribution pulse decreases much faster than its
duration as the laser duration grows. A two-cycle laser with carrier-envelope phase of 0° can produce a single distribution pulse peaked at the laser carrier phase 1.22rad and spanned 1.18rad with the cutoff energy 2.9Up+Ip and a bandwidth 0.63Up, where Up is the ponderomotive potential of the laser field and Ip is the atomic ionization potential.
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| Keywords:
42.65.Re
42.65.Ky
32.80.Rm
42.50.Hz
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Received: 18 December 2007
Published: 31 March 2008
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| PACS: |
42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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32.80.Rm
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(Multiphoton ionization and excitation to highly excited states)
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42.50.Hz
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(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
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