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您的检索式：作者名="Ivan Yakovlev"
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| 1 | Suppressing small-scale self-focusing of high-power femtosecond pulses显示文摘It was shown experimentally that for a 65-fs 17-J pulse,the effect of filamentation instability,also known as small-scale self-focusing,is much weaker than that predicted by stationary and nonstationary theoretical models for high B-integral values.Although this discrepancy has been left unexplained at the moment,in practice no signs of filamentation may allow a breakthrough in nonlinear pulse post-compression at high laser energy. | Mikhail Martyanov Vladislav Ginzburg Alexey Balakin Sergey Skobelev Dmitry Silin Anton Kochetkov Ivan Yakovlev Alexey Kuzmin Sergey Mironov Ilya Shaikin Sergey Stukachev Andrey Shaykin Efim Khazanov Alexander Litvak | 2023 | High Power Laser Science and Engineering2023，11，2： | 0 |
| 2 | Use of KDP crystal as a Kerr nonlinear medium for compressing PW laser pulses down to 10 fs显示文摘The input pulse of the laser PEARL with energy of 18 J and pulse duration of about 60 fs was compressed to 10 fs after passage through a 4-mm-thick KDP crystal and reflection at two chirped mirrors with sum dispersion of-200 fs^(2).The experiments were performed for the B-integral values from 5 to 19 without visible damage to the optical elements,which indicates that small-scale self-focusing is not a significant issue.It was shown that,by virtue of the low dispersion of the group velocity,the KDP crystal has some advantages over silica:a larger pulse compression coefficient,especially at a small value of the B-integral(B=5,...,9),lower absolute values of chirped mirror dispersion,and also a possibility to control the magnitude of nonlinearity and dispersion by changing crystal orientation. | Andrey Shaykin Vladislav Ginzburg Ivan Yakovlev Anton Kochetkov Alexey Kuzmin Sergey Mironov Ilya Shaikin Sergey Stukachev Vladimir Lozhkarev Artem Prokhorov Efim Khazanov | 2021 | High Power Laser Science and Engineering2021，9，4： | 0 |
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