Optimization of Two-color Chirped Laser Waveform for Extending High-order Harmonic Cut-off Energy and Generating Isolated Attosecond Pulse （Invited）

Chen-hui XU; Yan-bo CHEN; Li-wei HE; Cheng JIN

doi:10.3788/gzxb20204911.1149007

Acta Photonica Sinica, Volume. 49, Issue 11, 106(2020)

Optimization of Two-color Chirped Laser Waveform for Extending High-order Harmonic Cut-off Energy and Generating Isolated Attosecond Pulse （Invited）

Chen-hui XU... Yan-bo CHEN, Li-wei HE and Cheng JIN |Show fewer author(s)

Author Affiliations

Department of Applied Physics， Nanjing University of Science and Technology， Nanjing210094， China

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Figures & Tables(8)

Fig. 1. Optimized two-color chirped laser pulse (the blue areas indicate the “temporal gate” for the generation of IAPs)

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Fig. 2. High-harmonic spectra and isolated attosecond pulses of a Ne atom under the two-color optimized waveform with duration of 16 fs

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Fig. 3. HHG spectra and isolated attosecond pulses of a Ne atom under the two-color optimized waveforms with durations of 24 fs and 32 fs, respectively

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Fig. 4. Comparison of high harmonics by using the two-color optimized laser waveforms without or with the chirp, whose initial duration is 24 fs

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Fig. 5. Comparison of single-atom harmonic spectra by using optimized waveforms with different wavelength combinations

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Table 1. Optimized laser parameters for the two-color waveform at different initial conditions
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Table 1. Optimized laser parameters for the two-color waveform at different initial conditions
Run index $E_{1} / (\times 10^{14} W / c m^{2})$ $α_{1} / (\times 10^{2} a . u .)$ $β_{1} / (\times 10^{2} a . u .)$ $β_{2} / (\times 10^{2} a . u .)$
1 1.50 1.00 -2.71 -1.80
2 1.49 0.99 -2.25 -1.60
3 1.50 0.99 -2.30 -1.98
4 1.46 1.25 -2.60 -1.71
5 1.58 1.03 -2.39 -1.92

Table 2. Optimized laser parameters for the two-color waveform for laser durations of 24 fs and 32 fs, respectively
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Table 2. Optimized laser parameters for the two-color waveform for laser durations of 24 fs and 32 fs, respectively
Pulse duration /fs $E_{1} / (\times 10^{14} W / c m^{2})$ $α_{1} / (\times 10^{2} a . u .)$ $β_{1} / (\times 10^{2} a . u .)$ $β_{2} / (\times 10^{2} a . u .)$
24 1.50 0.99 -2.60 -1.80
32 1.52 0.91 -2.56 -1.72

Table 3. Optimized laser parameters for the two-color waveform at different initial conditions
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Table 3. Optimized laser parameters for the two-color waveform at different initial conditions
Run index $E_{1} / (\times 10^{14} W \cdot c m^{- 2})$ $α_{1} / (\times 10^{2} a . u .)$ $β_{1} / (\times 10^{2} a . u .)$ $β_{2} / (\times 10^{2} a . u .)$
1 1.48 0.80 -2.99 -2.87
2 1.48 0.82 -3.05 -2.88
3 1.49 0.88 -3.11 -2.56
4 1.49 0.84 -3.20 -2.52
5 1.49 0.83 -3.10 -2.56

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Chen-hui XU, Yan-bo CHEN, Li-wei HE, Cheng JIN. Optimization of Two-color Chirped Laser Waveform for Extending High-order Harmonic Cut-off Energy and Generating Isolated Attosecond Pulse （Invited）[J]. Acta Photonica Sinica, 2020, 49(11): 106

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Paper Information

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Received: --

Accepted: --

Published Online: Mar. 11, 2021

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DOI:10.3788/gzxb20204911.1149007

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Optimized laser parameters for the two-color waveform at different initial conditions

Table 1. Optimized laser parameters for the two-color waveform at different initial conditions

Table 2. Optimized laser parameters for the two-color waveform for laser durations of 24 fs and 32 fs, respectively

Table 2. Optimized laser parameters for the two-color waveform for laser durations of 24 fs and 32 fs, respectively

Table 3. Optimized laser parameters for the two-color waveform at different initial conditions

Table 3. Optimized laser parameters for the two-color waveform at different initial conditions

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