Accession Number:

ADP011779

Title:

Attempt to Generate Narrow Linewidth, CW Terahertz Radiation by Using Optical Frequency Comb

Descriptive Note:

Corporate Author:

KANSAI ADVANCED RESEARCH CENTER KOBE (JAPAN) TERAHERTZ OPTOELECTRONIC RESEARCH GROUP

Report Date:

2000-09-29

Pagination or Media Count:

3.0

Abstract:

We report on an attempt to generate highly stable continuous terahertz THz wave by using optical frequency comb OFC. About 10-nm wide OFC has been generated through a deep phase modulation of a 852 nm laser line in lithium niobate crystal cavity. The multiple optical modes side bands of the OFC, which are equally separated from each other by the modulation frequency 6 GHz are taken as the frequency reference. When another semiconductor laser is frequency locked, the stability of the difference frequency between the master laser and the second laser is improved on the same order of the RF modulator. An ultra-narrow, line and tunable THz radiation source can be achieved by photomixing of this stable difference-frequency optical beat in a photoconductive antenna.

Subject Categories:

  • Lasers and Masers
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE