High-repetition-rate and multi-pulse ultrashort laser damage of gold-coated photoresist grating

Han, Yuxing; Jin, Yunxia; Kong, Fanzuo; Wang, Yonglu; Zhang, Yibin; Cao, Hongchao; Cui, Yun; Shao, Jianda

doi:10.1016/j.apsusc.2021.151819

Cited by 6 publications

(6 citation statements)

References 48 publications

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“…Clearly, there is a stark contrast in the law of LIDTs and incident angles between metal gratings and dielectric gratings. This is mainly because the LIDT for dielectric gratings is greatly determined by the electric field intensity (EFI) enhancement inside the grating 21,22 , which is the opposite for metal gratings 23 . This work will facilitate the future near single-cycle 100-PW pulse stretching and compression.…”

Section: Ultra-broadband Gold Gratingsmentioning

confidence: 99%

Universal strategies for enhancing the laser energy loading capability of pulse compression gratings

Han,

kong,

cao

et al. 2023

Pacific-Rim Laser Damage 2023: Optical Materials for High-Power Lasers

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Section: Ultra-broadband Gold Gratingsmentioning

confidence: 99%

Universal strategies for enhancing the laser energy loading capability of pulse compression gratings

Han,

kong,

cao

et al. 2023

Pacific-Rim Laser Damage 2023: Optical Materials for High-Power Lasers

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“…Based on the above system architecture design, standard line densities, for example, 1480 and 1740 lines/mm gold gratings, produced by LLNL 39 , Horiba 40 , PGL 41 , SUDA 42 , and SIOM 43 , 44 , were available in high-energy 800 nm-centered laser systems with around 100 nm bandwidths. Adjusting the groove depth and profile, the −1 order high-diffraction bandwidth could be improved to about 200 nm centered at 910 nm or 925 nm.…”

Section: Introductionmentioning

confidence: 99%

400nm ultra-broadband gratings for near-single-cycle 100 Petawatt lasers

Han

Zhang

et al. 2023

Nat Commun

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Compressing high-energy laser pulses to a single-cycle and realizing the “λ3 laser concept”, where λ is the wavelength of the laser, will break the current limitation of super-scale projects and contribute to the future 100-petawatt and even Exawatt lasers. Here, we have realized ultra-broadband gold gratings, core optics in the chirped pulse amplification, in the 750–1150 nm spectral range with a > 90% −1 order diffraction efficiency for near single-cycle pulse stretching and compression. The grating is also compatible with azimuthal angles from −15° to 15°, making it possible to design a three-dimensional compressor. In developing and manufacturing processes, a crucial grating profile with large base width and sharp ridge is carefully optimized and controlled to dramatically broaden the high diffraction efficiency bandwidth from the current 100–200 nm to over 400 nm. This work has removed a key obstacle to achieving the near single-cycle 100-PW lasers in the future.

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“…The increase of peak power in femtosecond laser systems mainly depends on the pulse compression grating (GCPG), whose core metrics are high diffraction efficiency and high laser-induced damage threshold 3 . Compared to GCPGs, gold-coated fused silica gratings (GCFSGs) have a higher threshold potential due to the high pyrolytic nature of their substrates 4 . The design and fabrication of such GCFSGs have been an important research direction in chirped pulse amplification technology 5 .…”

Section: Introductionmentioning

confidence: 99%

“…The design and fabrication of such GCFSGs have been an important research direction in chirped pulse amplification technology 5 . However, compared with gold-plated photoresist gratings, the range of process tolerances is small, and how to fabricate and design such gratings is particularly important 4,6 .…”

Section: Introductionmentioning

confidence: 99%

Design of rectangular gold-coated fused silica gratings with high diffraction efficiency for femtosecond pulse compression

Li,

Ren,

et al. 2023

AOPC 2023: Laser Technology and Applications; And Optoelectronic Devices and Integration

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High-repetition-rate and multi-pulse ultrashort laser damage of gold-coated photoresist grating

Cited by 6 publications

References 48 publications

Universal strategies for enhancing the laser energy loading capability of pulse compression gratings

Universal strategies for enhancing the laser energy loading capability of pulse compression gratings

400nm ultra-broadband gratings for near-single-cycle 100 Petawatt lasers

Design of rectangular gold-coated fused silica gratings with high diffraction efficiency for femtosecond pulse compression

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