Two-step pulse compressor based on asymmetric four-grating compressor for femtosecond petawatt lasers

Shen, Xiong; Du, Shuman; Liang, Wenhai; Wang, Peng; Li, Jun; Li, Ruxin

doi:10.1007/s00340-022-07878-9

Cited by 14 publications

(34 citation statements)

References 27 publications

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“…According to previous work, the spatial chirp induced beam-smoothing effect is proportional to the induced spatial chirp width [11][12][13], which can be expressed as:…”

Section: Beam-smoothing Effectmentioning

confidence: 99%

“…4. Focusing of a spatially chirped beam, so called spatiotemporal focusing [22,23] has been successfully used in two-photon microscopy and ultrafast micro-machining applications to increase the axial resolution of the optical section function and has also been explored in our previous works to focus beams with spatial chirp [11,12].…”

Section: Far-field Propertiesmentioning

confidence: 99%

“…The focal length of the parabolic mirror is set to be 3 m, and analytic calculation based on Fresnel diffraction is used to explore the properties around the focal point [12,22]. For simplicity in the analytic calculation, both the beam and spectrum are assumed to be Gaussian profiles with beam full width about 860 mm and FWHM pulse duration about 14.3 fs.…”

Section: Far-field Propertiesmentioning

confidence: 99%

“…For the properties in the focal plane, the influence of the spatial chirp and spectral-clipping are both considered. Fourier pulse propagation is used to obtain the properties [12]. With input beam size 860×860 mm 2 , Fig.…”

Section: Far-field Propertiesmentioning

confidence: 99%

“…In this method, the pulse-energy-limitation problem in grating-based compressor is transferred to the spatiotemporal properties of the input/output laser beams [11]. As an improvement of the typical MPC, multistage-smoothing MPC (MS-MPC) based on asymmetric four-grating compressor (AFGC) was also proposed to achieve ultrahigh peak-power output and safe operation, simultaneously [12,13].…”

Section: Introductionmentioning

confidence: 99%

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A 100-PW compressor based on single-pass single-grating pair

Shen²,

Liang³

et al. 2023

High Pow Laser Sci Eng

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A multistep pulse compressor (MPC) based on a single-pass single-grating-pair (SSGP) is proposed to simplify the entire multi-petawatt (PW) compressor. Only one grating pair with relatively long perpendicular distance is used to generate the same amount of spectral chirp compared with a fourgrating main compressor. As SSGP compressor induces the largest spatial chirp, it can introduce the best beam-smoothing effect to the laser beam on the last grating. When considering the diffraction loss of only two gratings, the total compression efficiency of the SSGP compressor is even larger than that of a four-grating main compressor. Furthermore, the wavefront aberration induced by SSGP compressor can be better compensated by using deformable mirrors, however it is difficult or complicated to be well compensated in a four-grating compressor. Approximately 50-100 PW laser pulses can be obtained using this SSGP-based multistage-smoothing MPC with a single laser beam.

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“…According to previous work, the spatial chirp induced beam-smoothing effect is proportional to the induced spatial chirp width [11][12][13], which can be expressed as:…”

Section: Beam-smoothing Effectmentioning

confidence: 99%

Section: Far-field Propertiesmentioning

confidence: 99%

Section: Far-field Propertiesmentioning

confidence: 99%

Section: Far-field Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A 100-PW compressor based on single-pass single-grating pair

Shen²,

Liang³

et al. 2023

High Pow Laser Sci Eng

Self Cite

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Self‐Compression of Ultrahigh‐Peak‐Power Lasers

Chen,

Liang,

et al. 2024

Laser & Photonics Reviews

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Pulse self‐compression can offer a more compact and efficient solution for improving the peak power of ultraintense laser pulses. By solving a modified nonlinear Schrödinger equation considering the fifth‐order susceptibility, it is found that self‐compression occurred even in a normally dispersive medium owing to the negative fifth‐order susceptibility inducing a mass of negative frequency chirp. Furthermore, negatively prechirped pulses enabled self‐compression at lower intensities, thus preventing damage to the medium. The optimal choices for prechirp, input intensity, and medium length are numerically analyzed. A proof‐of‐principle experiment confirmed the aforementioned theoretical findings. It is expected that petawatt or even exawatt laser pulses with 25 fs/15 fs transform‐limited pulse duration can be self‐compressed to ≈ 9.9 fs/7.6 fs in normally dispersive media, such as fused silica glass plate.

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