Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/106945
Title: Pulse propagation in hollow-core fiber at high-pressure regime : application to compression of tens of μJ pulses and determination of nonlinear refractive index of xenon at 103  μm
Authors: Lo, Alencious Shu-Zee
Wang, Lin
Loh, Zhi-Heng
Keywords: Ultrafast Nonlinear Optics
Ultrafast Optics
Science::Physics
Issue Date: 2018
Source: Lo, A. S.-Z., Wang, L., & Loh, Z.-H. (2018). Pulse propagation in hollow-core fiber at high-pressure regime: application to compression of tens of μJ pulses and determination of nonlinear refractive index of xenon at 103  μm. Applied Optics, 57(16), 4659-4664. doi:10.1364/AO.57.004659
Series/Report no.: Applied Optics
Abstract: Classical expression for the propagation constant and absorption coefficient derived by Marcatili and Schmeltzer for hollow-core fiber (HCF) has been slightly modified to account for noble gas material dispersion at high gas pressure. As a proof of concept, the nonlinear refractive index of xenon (Xe) gas has been investigated by numerically fitting to experimentally obtained spectral broadening in HCF under intense high repetition rate pulses. By varying the Xe pressure inside the HCF, a pressure-dependent nonlinear refractive index value of 𝜅�����2=(50.1±0.3)×10−20  cm2/W atm at 1.03 μm is obtained, which compares favorably with literature reported values. Finally, temporal compression of 50 μJ, 320 fs pulses at 0.6 MHz repetition rate to 61 fs with 0.29 GW peak power in a HCF filled with 5 bars of Xe gas has been demonstrated using a single HCF compression stage.
URI: https://hdl.handle.net/10356/106945
http://hdl.handle.net/10220/50045
ISSN: 1559-128X
DOI: 10.1364/AO.57.004659
Rights: © 2018 Optical Society of America. All rights reserved. This paper was published in Applied Optics and is made available with permission of Optical Society of America.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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