Simultaneous acquisition of complex transmittance and birefringence with two counter-rotating, circularly polarized THz pulses

• Kawada, Yoichi

• Yoshioka, Katsumasa

• Arashida, Yusuke

• Katayama, Ikufumi

• Takeda, Jun

• Takahashi, Hironori

抄録

Here we demonstrate simultaneous measurements of the complex transmittance and birefringence using left- and right-handed circularly polarized terahertz (THz) pulses. We change the polarization of the THz pulses periodically by modulating the polarization of the pump pulses directed onto a ZnTe (111) crystal, and we convert linear to circular polarization using a broadband THz quarter-wave retarder. By integrating the alternating-emission system with the polarization-sensitive terahertz time-domain spectrometer, we are able to obtain the electric-field vector of the transmitted terahertz pulses for both the left- and right-handed circular polarizations. Utilizing this technique, we are able to measure simultaneously the frequency-dependent complex refractive indices (real and imaginary parts) and the orientations of the slow and fast axes of birefringent materials, a quartz disc and a barium borate crystal, in a single temporal sweep.

収録刊行物

• Optics Express

  Optics Express 26 (13), 30420-30434, 2018-11-12

  OSA publishing

キーワード

• Atomic and Molecular Physics, and Optics

詳細情報

• CRID: 1050282812793286400
• NII論文ID: 120006540108
• ISSN: 10944087
• DOI: 10.1364/oe.26.030420
• Web Site: http://hdl.handle.net/10131/00012082
• Web Site: https://www.osapublishing.org/viewmedia.cfm?URI=oe-26-23-30420&seq=0
• 本文言語コード: en
• 資料種別: journal article
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