Terahertz emission study of femtosecond time-transient nonequilibrium state in optically excited YBa2Cu3O7-delta thin films

被引：35

作者：

Tonouchi, M

Tani, M

Wang, Z

Sakai, K

Wada, N

Hangyo, M

机构：

[1] KANSAI ADV RES CTR, COMMUN RES LAB, NISHI KU, KOBE 65124, JAPAN

[2] OSAKA UNIV, RES CTR SUPERCOND MAT & ELECTR, SUITA, OSAKA 565, JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1996年 / 35卷 / 12A期

关键词：

nonequilibrium superconductor; high T-c superconductor; femtosecond laser pulse; THz radiation; quasiparticle recombination time;

D O I：

10.1143/JJAP.35.L1578

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We observed the temperature dependence of a femtosecond time-transient photoresponse in YBa2Cu3O7-delta thin films by detecting terahertz (THz) emission. Ultrashort electromagnetic pulses which are referred to as THz emission were generated by ultrafast supercurrent modulation with femtosecond laser pulse irradiation. The transient response is discussed in relation to the quasiparticle dynamics of the nonequilibrium superconductor.

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收藏

页码：L1578 / L1581

页数：4

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