Development of Terahertz, Mid- and Far-Infrared Frequency Standard toward Ultra-Broadband Optical Frequency Measurement System

被引：0

作者：

Nagano, Shigeo ^{[1
]}

Kumagai, Motohiro ^{[1
]}

Ito, Hiroyuki ^{[1
]}

Kajita, Masatoshi ^{[1
]}

Hando, Yuko ^{[1
]}

机构：

[1] Natl Inst Informat & Commun Technol NICT, Koganei, Tokyo 1848795, Japan

来源：

2012 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM (FCS) | 2012年

关键词：

COMB;

D O I：

暂无

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：

We are developing an unprecedented ultra-broadband optical frequency measurement system, which covers visible, infrared (IR) and terahertz (THz) frequency regions. An optical frequency comb technique is employed for absolute frequency measurement of various lasers and oscillators. The visible femtosecond-pulse Ti: sapphire laser frequency combs developed were applied for the absolute frequency measurement for optical clocks and confirmed to have the measurement precision in 10(-19) level by the optical heterodyne comparison. The near-IR erbium-doped-fiber laser frequency combs were also developed for the frequency calibration of optical-fiber communication lasers with 10(-16) level. Moreover, we have recently achieved the frequency measurement around 100 GHz by means of THz frequency comb with a photoconductive antenna with uncertainty at the 10(-17) level. By coherently linking these frequency combs developed and mid-and far-IR combs currently investigating, we can achieve the gap-free absolute frequency measurement with high precision. Such system will play an important role not only for metrology but scientific and industrial applications.

引用

页数：6

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