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Proceedings Paper

Nearly fully compressed 1053 nm pulses directly obtained from 800 nm laser-seeded photonic crystal fiber below zero dispersion point
Author(s): Zaharit Refaeli; Yariv Shamir; Atara Ofir; Gilad Marcus
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Paper Abstract

We report a simple robust and broadly spectral-adjustable source generating near fully compressed 1053 nm 62 fs pulses directly out of a highly-nonlinear photonic crystal fiber. A dispersion-nonlinearity balance of 800 nm Ti:Sa 20 fs pulses was obtained initially by negative pre-chirping and then launching the pulses into the fibers' normal dispersion regime. Following a self-phase modulation spectral broadening, some energy that leaked below the zero dispersion point formed a soliton whose central wavelength could be tuned by Self-Frequency-Raman-Shift effect. Contrary to a common approach of power, or, fiber-length control over the shift, here we continuously varied the state of polarization, exploiting the Raman and Kerr nonlinearities responsivity for state of polarization. We obtained soliton pulses with central wavelength tuned over 150 nm, spanning from well below 1000 to over 1150 nm, of which we could select stable pulses around the 1 μm vicinity. With linewidth of > 20 nm FWHM Gaussian-like temporal-shape pulses with ∼ 62 fs duration and near flat phase structure we confirmed high quality pulse source. We believe such scheme can be used for high energy or high power glass lasers systems, such as Nd or Yb ion-doped amplifiers and systems.

Paper Details

Date Published: 15 February 2018
PDF: 7 pages
Proc. SPIE 10516, Nonlinear Frequency Generation and Conversion: Materials and Devices XVII, 1051607 (15 February 2018); doi: 10.1117/12.2300303
Show Author Affiliations
Zaharit Refaeli, Soreq Nuclear Research Ctr. (Israel)
The Hebrew Univ. of Jerusalem (Israel)
Yariv Shamir, Soreq Nuclear Research Ctr. (Israel)
Atara Ofir, Soreq Nuclear Research Ctr. (Israel)
Gilad Marcus, The Hebrew Univ. of Jerusalem (Israel)

Published in SPIE Proceedings Vol. 10516:
Nonlinear Frequency Generation and Conversion: Materials and Devices XVII
Konstantin L. Vodopyanov; Kenneth L. Schepler, Editor(s)

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