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Self-focusing of pseudo-nondiffracting laser beams with circular symmetry in collisional plasma under two ramp density profiles

Journal Article · · Optical and Quantum Electronics

The self-focusing of zeroth-order Bessel–Gaussian beams through plasma under exponential and tangential ramp density profiles is investigated theoretically by using Wentzel–Kramers–Brillouin approximation. To examine the effect of plasma density ramp on self-focusing of the studied beams, the evolution of beam-width parameter with normalized propagation distance is reported for diverse laser beams and plasma parameters. The results reveal that stronger self-focusing is obtained with exponential ramp density profile as compared to the tangential density ramp one.

OSTI ID:
22950241
Journal Information:
Optical and Quantum Electronics, Journal Name: Optical and Quantum Electronics Journal Issue: 6 Vol. 51; ISSN OQELDI; ISSN 0306-8919
Country of Publication:
United States
Language:
English