Qingshun Bai, Hao Sun, Yuhai Li, Peng Zhang, Yunlong Du. Research progress on laser-induced damage mechanism and threshold improvement of pulse compression gratings[J]. High Power Laser and Particle Beams, 2022, 34(8): 081002
- High Power Laser and Particle Beams
- Vol. 34, Issue 8, 081002 (2022)
Fig. 1. Nodular defect morphology under laser irradiation
Fig. 2. Distribution of nodular defects in gratings
![Grating damage morphology and electric field distribution caused by nodular defects at different positions of s-polarized Ti:Sapphire laser with an incident angle of 65° and a pulse duration of 32 fs[41]](/Images/icon/loading.gif){kind=icon}
Fig. 3. Grating damage morphology and electric field distribution caused by nodular defects at different positions of s-polarized Ti:Sapphire laser with an incident angle of 65° and a pulse duration of 32 fs[41]
Fig. 4. Damage evolution of grating film under irradiation of 120 fs, 796 nm, 10 Hz laser[40]. (a)(d) nano bumps; (b)(e) surface roughness; (c) nano cracks; (f) film falling off
Fig. 5. Distribution of grating films
Fig. 6. Grating damage morphologies of Ti: Sapphire laser with different laser injection energy and film deposition methods at a frequency of 1 kHz and a pulse duration of 60 fs[50]
Fig. 7. Damage morphology of ACG prepared by electron beam evaporation with Ti: Sapphire laser at frequency 1 kHz and pulse duration 60 fs[51]
Fig. 8. Changes of LIDT of SiO2 sol-gel film with pollution time[63]
Fig. 9. Damage morphologies of MMDG with 1.48 J/cm2 of particulate pollutants at pulse duration of 8.6 ps[64]
Fig. 10. Typical pulse compression grating preparation process
Fig. 11. Laser-induced damage thresholds of HfO2 films at annealing temperatures of 353 K, 423 K, 503 K and 573 K[65]
Fig. 12. Elements content of the surface of the substrates[69]
Fig. 13. Damage state of Ti: Sapphire laser in the state of single-pulse and double-pulse radiation at a frequency of 10 Hz and a pulse duration of 35 fs[70]
Fig. 14. SEM images of grating before and after cleaning[76]
Fig. 15. Damage probability of introduced gas under vacuum and different pressures[80]
Fig. 16. Scientific and technical issues in the research on laser-induced damage of pulse-compressed gratings
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Table 1. Comparison of influencing factors of laser-induced damage threshold
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Table 2. Comparison of laser damage threshold enhancement process schemes
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