Numerical study of unstable resonator in thin disk laser

Shayganmanesh, Mahdi; Saeedizadeh, Reza

doi:10.1007/s11082-014-9933-z

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…However, if the pulse intensity is determined to be smaller than the gas ionization intensity, as proposed in this investigation, the self-focusing effect can be excluded from the consideration. As for the study of the impact of diffraction on the beam profile, the Huygens integral, given by [26,27]…”

Section: Background Theorymentioning

confidence: 99%

Beam profile and pulse width assessment in an engineered D-shaped hollow-core photonic crystal fiber

Saeedizadeh¹,

Sabouri²,

Khorsandi³

2021

J. Opt.

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In this work, a theoretical model is discussed to investigate the performance of a core-engineered gas-filled hollow-core photonic crystal fiber (HC-PCF). To gain the shortest pulse width and the best beam quality at the output, the core geometry of the fiber is modified within four specific types referred to as type I to type IV fibers. It is found that, by using type III and type IV HC-PCF devices, a 5 ps laser pulse in the input can be respectively compressed to 18.5 fs and 13.7 fs at the output. It is found that, a 5-ps laser pulse in the input can be reduced to 18.5 fs and 13.7 fs if type III- and type IV of modified HC-PCF device are respectively used for compression. The structural similarity (SSIM) index is used to evaluate the quality of the beam cross-section that ultimately emerges from the end of the fiber. The results suggest that the highest SSIM value of 0.76 can be obtained if type III HC-PCF is employed for pulse compression.

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Section: Background Theorymentioning

confidence: 99%