Third and fifth harmonics generation in air and nanoparticle-containing plasmas using 150-kHz fiber laser

Boltaev, Ganjaboy S.; Abbasi, Naveed A.; Kim, Vyacheslav V.; Iqbal, Mazhar; Khan, Sharjeel; Zvyagin, A. I.; Ovchinnikov, O. V.; Ganeev, R. A.; Alnaser, A. S.

doi:10.1007/s00340-020-07430-7

Cited by 3 publications

(1 citation statement)

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“…Previous studies were limited by 1 kHz class lasers [12,21,22]. The details of application of the rotating target for improvement of stability of the low and harmonics from plasma in the case of low and high pulse repetition rates of laser-matter interactions have been described earlier in [54,55]. In present studies, the harmonics were generated in carbon, boron, manganese, zinc, and titanium plasmas using 150 kHz laser.…”

Section: Discussionmentioning

confidence: 80%

Application of 150 kHz Laser for High-Order Harmonic Generation in Different Plasmas

et al. 2020

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Application of high pulse repetition rate lasers opens the way for increasing the average flux of the high-order harmonics generating in the ions- and nanoparticles-containing plasmas ablated on the surfaces of various metal targets. We demonstrate the harmonic generation of 37 fs, 150 kHz, 1030 nm, 0.5 mJ pulses in different plasmas. The formation of plasma plumes on the surfaces of carbon, titanium, boron, zinc, and manganese targets was performed during laser ablation, using 250 fs pulses from the same laser. The ablation of the mixed powder of boron nanoparticles and silver microparticles was used for generation of harmonics with high yield. Harmonics up to the fortieth orders from the carbon plasma were obtained. The estimated conversion efficiencies in laser-produced plasmas were ≤10−5. The photon flux for a single harmonic generating in carbon plasma was estimated to be 8 × 1013 photons/s.

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