Detection of terahertz radiation from longitudinal optical phonon-plasmon coupling modes in InSb film using an ultrabroadband photoconductive antenna

被引：42

作者：

Gu, P

Tani, M

Sakai, K

Yang, TR

机构：

[1] Kansai Adv Res Ctr, Commun Res Lab, Kobe, Hyogo 6512401, Japan

[2] Natl Taiwan Normal Univ, Dept Phys, Taipei 117, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 12期

关键词：

D O I：

10.1063/1.1311609

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Terahertz radiation from longitudinal optical (LO) phonon-plasmon coupling modes in InSb films is observed using an ultrafast photoconductive antenna detector. We demonstrate a response frequency of up to 7 THz for a low-temperature-grown GaAs-based photoconductive antenna gated with 25 fs laser pulses. It is found that the emission frequencies of the coupling modes are dependent only on the residual carrier density, not on the excitation carrier density. It is also found that the LO phonon-plasmon oscillations in semiconductors can serve as an efficient THz source. (C) 2000 American Institute of Physics. [S0003-6951(00)04538-1].

引用

收藏

页码：1798 / 1800

页数：3

相关论文

共 13 条

[1]

[Anonymous], UNPUB

[2] COHERENT MILLIMETER-WAVE GENERATION BY HETERODYNE CONVERSION IN LOW-TEMPERATURE-GROWN GAAS PHOTOCONDUCTORS [J].

BROWN, ER ;

SMITH, FW ;

MCINTOSH, KA .

JOURNAL OF APPLIED PHYSICS, 1993, 73 (03) :1480-1484

[3] Generation and relaxation of coherent majority plasmons [J].

Cho, GC ;

Dekorsy, T ;

Bakker, HJ ;

Hovel, R ;

Kurz, H .

PHYSICAL REVIEW LETTERS, 1996, 77 (19) :4062-4065

[4] LIGHT-SCATTERING FROM NONEQUILIBRIUM ELECTRON-HOLE PLASMA EXCITED BY PICOSECOND LASER-PULSES IN GAAS [J].

COLLINS, CL ;

YU, PY .

SOLID STATE COMMUNICATIONS, 1984, 51 (03) :123-126

[5] EMISSION OF SUBMILLIMETER ELECTROMAGNETIC-WAVES BY COHERENT PHONONS [J].

DEKORSY, T ;

AUER, H ;

WASCHKE, C ;

BAKKER, HJ ;

ROSKOS, HG ;

KURZ, H ;

WAGNER, V ;

GROSSE, P .

PHYSICAL REVIEW LETTERS, 1995, 74 (05) :738-741

[6] Few-cycle THz emission from cold plasma oscillations [J].

Kersting, R ;

Unterrainer, K ;

Strasser, G ;

Kauffmann, HF ;

Gornik, E .

PHYSICAL REVIEW LETTERS, 1997, 79 (16) :3038-3041

[7] POLARIZATION AND INTENSITY OF RAMAN SCATTERING FROM PLASMONS AND PHONONS IN GALLIUM ARSENIDE [J].

MOORADIAN, A ;

MCWHORTER, AL .

PHYSICAL REVIEW LETTERS, 1967, 19 (15) :849-+

[8] ULTRAFAST LOCAL FIELD-DYNAMICS IN PHOTOCONDUCTIVE THZ ANTENNAS [J].

PEDERSEN, JE ;

LYSSENKO, VG ;

HVAM, JM ;

JEPSEN, PU ;

KEIDING, SR ;

SORENSEN, CB ;

LINDELOF, PE .

APPLIED PHYSICS LETTERS, 1993, 62 (11) :1265-1267

[9] THZ SPECTROSCOPY AND SOURCE CHARACTERIZATION BY OPTOELECTRONIC INTERFEROMETRY [J].

RALPH, SE ;

GRISCHKOWSKY, D .

APPLIED PHYSICS LETTERS, 1992, 60 (09) :1070-1072

[10] Emission characteristics of photoconductive antennas based on low-temperature-grown GaAs and semi-insulating GaAs [J].

Tani, M ;

Matsuura, S ;

Sakai, K ;

Nakashima, S .

APPLIED OPTICS, 1997, 36 (30) :7853-7859