Coherent detection of mid-infrared radiation up to 60THz with an LT-GaAs photoconductive antenna

被引：39

作者：

Kono, S ^{[1
]}

Tani, M ^{[1
]}

Sakai, K ^{[1
]}

机构：

[1] Kansai Adv Res Ctr, Commun Res Lab, Nishi Ku, Kobe, Hyogo 6512492, Japan

来源：

IEE PROCEEDINGS-OPTOELECTRONICS | 2002年 / 149卷 / 03期

关键词：

D O I：

10.1049/ip-opt:20020262

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The shaker modulation technique is demonstrated for ultrabroadband detection of terahertz (THz) radiation with a low-temperature-grown GaAs photoconductive (PC) antenna gated with 15 fs laser pulses. The differentiation of the time-resolved waveforms with the shaker modulation is advantageous to enhance the high-frequency components of the detected radiation without degrading the signal-to-noise ratio (SNR) because the PC response function determined by the temporal profile of the gating carrier number rapidly decreases with the increase in frequency. With the quantitative comparison of SNR between PC and electro-optic detection, the PC detection of radiation with the shaker modulation technique is promising for further spectroscopic application. The detection of radiation up to 60 THz is demonstrated.

引用

页码：105 / 109

页数：5

共 17 条

[1] PICOSECOND PHOTOCONDUCTING HERTZIAN DIPOLES [J].

AUSTON, DH ;

CHEUNG, KP ;

SMITH, PR .

APPLIED PHYSICS LETTERS, 1984, 45 (03) :284-286

[2]

BOYD S, 1992, NONLINEAR OPTICS

[3]

BRODSCHELM A, 2000, ULTAFAST PHENOMINA, V12

[4] Electro-optic transceivers for terahertz-wave applications [J].

Chen, Q ;

Tani, M ;

Jiang, ZP ;

Zhang, XC .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2001, 18 (06) :823-831

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

Gu, P ;

Tani, M ;

Sakai, K ;

Yang, TR .

APPLIED PHYSICS LETTERS, 2000, 77 (12) :1798-1800

[6] Generation and field-resolved detection of femtosecond electromagnetic pulses tunable up to 41 THz [J].

Huber, R ;

Brodschelm, A ;

Tauser, F ;

Leitenstorfer, A .

APPLIED PHYSICS LETTERS, 2000, 76 (22) :3191-3193

[7] Detection of up to 20 THz with a low-temperature-grown GaAs photoconductive antenna gated with 15 fs light pulses [J].

Kono, S ;

Tani, M ;

Gu, P ;

Sakai, K .

APPLIED PHYSICS LETTERS, 2000, 77 (25) :4104-4106

[8] Ultrabroadband photoconductive detection: Comparison with free-space electro-optic sampling [J].

Kono, S ;

Tani, M ;

Sakai, K .

APPLIED PHYSICS LETTERS, 2001, 79 (07) :898-900

[9] Detectors and sources for ultrabroadband electro-optic sampling: Experiment and theory [J].

Leitenstorfer, A ;

Hunsche, S ;

Shah, J ;

Nuss, MC ;

Knox, WH .

APPLIED PHYSICS LETTERS, 1999, 74 (11) :1516-1518

[10]

MADEULUNG O, 1996, SEMICONDUCTOR BASIC

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