Bulletin of the American Physical Society
Four Corners Section 2023 Meeting
Friday–Saturday, October 20–21, 2023; River Woods Conference Center, Logan, Utah
Session N02: Atomic, Molecular, and Optical Physics II
8:30 AM–10:08 AM,
Saturday, October 21, 2023
Riverwoods Conference Center
Room: Cottonwood
Chair: Hannah Wistrand, Colorado School of Mines
Abstract: N02.00003 : Improved Terahertz Generation Using BNA Derivatives*
8:58 AM–9:12 AM
Presenter:
Abigail J Hassler
(Brigham Young University)
Authors:
Abigail J Hassler
(Brigham Young University)
Megan F Nielson
(Brigham Young University)
Enoch Ho
(Brigham Young University)
Kailyn M Sorensen
(Brigham Young University)
Tanner Manwaring
(Brigham Young University)
Jeremy A Johnson
(Brigham Young University)
Paige K Petersen
(Brigham Young University)
David J Michaelis
(Brigham Young University)
Terahertz (THz) frequencies generated from optical rectification have a wide range of applications, including hyperspectral imaging and security monitoring. Efficient THz generation largely hinges on the properties of the nonlinear THz generation crystal. We have found several high-quality crystals that enable improved THz generation, including the organic crystal BNA. One of the key properties that determines how well a material generates THz is the phase matching, which is essentially how well the speeds of the infrared pump pulse and generated THz are matched through the crystal. We demonstrate the ability to alter phase matching by making small changes to the BNA molecular structure. Of these BNA derivatives, fluoro BNA offers increased THz output and generation through improved phase matching of both the THz and near IR light pulses. Funding: NSF-DMR 2104317
*Funding: NSF-DMR 2104317
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