Enhanced THz Radiation from YBCO Using <I>a</I>-Axis Oriented Thin Films Excited by Ultrashort Optical Pulses

Shin-ichi SHIKII; Norihide TANICHI; Takeshi NAGASHIMA; Masayoshi TONOUCHI; Masanori HANGYO; Masahiko TANI; Kiyomi SAKAI

Enhanced THz Radiation from YBCO Using a-Axis Oriented Thin Films Excited by Ultrashort Optical Pulses

Shin-ichi SHIKII, Norihide TANICHI, Takeshi NAGASHIMA, Masayoshi TONOUCHI, Masanori HANGYO, Masahiko TANI, Kiyomi SAKAI

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The electric field intensity of the THz radiation from YBCO thin films excited by ultrashort laser pulses has been enhanced by a factor of 3 using a-axis oriented films instead of c-axis oriented ones used previously under the same excitation conditions. This corresponds to the enhancement of a factor of 10 for the radiation power. From the transmittance measurements of the millimeter wave for a-and c-axis oriented films, the origin of the enhancement is attributed to the increased fraction of the THz electromagnetic wave power transmitted from the YBCO film to free space. This result indicates that the utilization of the anisotropic properties of high-T_c superconductors is effective to enhance the radiation power.

Publication: IEICE TRANSACTIONS on Electronics Vol.E80-C No.10 pp.1297-1303

Publication Date: 1997/10/25

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Type of Manuscript: Special Section PAPER (Special Issue on Basic Properties and Applications of Superconductive Electron Devices)

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Shin-ichi SHIKII, Norihide TANICHI, Takeshi NAGASHIMA, Masayoshi TONOUCHI, Masanori HANGYO, Masahiko TANI, Kiyomi SAKAI, "Enhanced THz Radiation from YBCO Using a-Axis Oriented Thin Films Excited by Ultrashort Optical Pulses" in IEICE TRANSACTIONS on Electronics, vol. E80-C, no. 10, pp. 1297-1303, October 1997, doi: .
Abstract: The electric field intensity of the THz radiation from YBCO thin films excited by ultrashort laser pulses has been enhanced by a factor of 3 using a-axis oriented films instead of c-axis oriented ones used previously under the same excitation conditions. This corresponds to the enhancement of a factor of 10 for the radiation power. From the transmittance measurements of the millimeter wave for a-and c-axis oriented films, the origin of the enhancement is attributed to the increased fraction of the THz electromagnetic wave power transmitted from the YBCO film to free space. This result indicates that the utilization of the anisotropic properties of high-T_c superconductors is effective to enhance the radiation power.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/e80-c_10_1297/_p

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@ARTICLE{e80-c_10_1297,
author={Shin-ichi SHIKII, Norihide TANICHI, Takeshi NAGASHIMA, Masayoshi TONOUCHI, Masanori HANGYO, Masahiko TANI, Kiyomi SAKAI, },
journal={IEICE TRANSACTIONS on Electronics},
title={Enhanced THz Radiation from YBCO Using a-Axis Oriented Thin Films Excited by Ultrashort Optical Pulses},
year={1997},
volume={E80-C},
number={10},
pages={1297-1303},
abstract={The electric field intensity of the THz radiation from YBCO thin films excited by ultrashort laser pulses has been enhanced by a factor of 3 using a-axis oriented films instead of c-axis oriented ones used previously under the same excitation conditions. This corresponds to the enhancement of a factor of 10 for the radiation power. From the transmittance measurements of the millimeter wave for a-and c-axis oriented films, the origin of the enhancement is attributed to the increased fraction of the THz electromagnetic wave power transmitted from the YBCO film to free space. This result indicates that the utilization of the anisotropic properties of high-T_c superconductors is effective to enhance the radiation power.},
keywords={},
doi={},
ISSN={},
month={October},}

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TY - JOUR
TI - Enhanced THz Radiation from YBCO Using a-Axis Oriented Thin Films Excited by Ultrashort Optical Pulses
T2 - IEICE TRANSACTIONS on Electronics
SP - 1297
EP - 1303
AU - Shin-ichi SHIKII
AU - Norihide TANICHI
AU - Takeshi NAGASHIMA
AU - Masayoshi TONOUCHI
AU - Masanori HANGYO
AU - Masahiko TANI
AU - Kiyomi SAKAI
PY - 1997
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E80-C
IS - 10
JA - IEICE TRANSACTIONS on Electronics
Y1 - October 1997
AB - The electric field intensity of the THz radiation from YBCO thin films excited by ultrashort laser pulses has been enhanced by a factor of 3 using a-axis oriented films instead of c-axis oriented ones used previously under the same excitation conditions. This corresponds to the enhancement of a factor of 10 for the radiation power. From the transmittance measurements of the millimeter wave for a-and c-axis oriented films, the origin of the enhancement is attributed to the increased fraction of the THz electromagnetic wave power transmitted from the YBCO film to free space. This result indicates that the utilization of the anisotropic properties of high-T_c superconductors is effective to enhance the radiation power.
ER -