Accession Number:

AD1104080

Title:

Optical Frequency Combs from High-Order Sideband Generation

Descriptive Note:

Journal Article - Open Access

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC WASHINGTON United States

Report Date:

2018-10-30

Pagination or Media Count:

10.0

Abstract:

We report on the generation of frequency combs from the recently-discovered phenomenon of high-order sideband generation HSG. A near-band gap continuous-wave cw laser with frequency fNIR was transmitted through an epitaxial layer containing GaAsAlGaAs quantum wells that were driven by quasi-cw in-plane electric fields F-THz between 4 and 50 kVcm oscillating at frequencies fTHz between 240 and 640 GHz. Frequency combs with teeth at fsideband fNIR n fTHz n even were produced, with maximum reported n 120, corresponding to a maximum comb span 80 THz. Comb spectra with the identical product fTHz x F-THz were found to have similar spans and shapes in most cases, as expected from the picture of HSG as a scattering-limited electron-hole recollision phenomenon. The HSG combs were used to measure the frequency and linewidth of our THz source as a demonstration of potential applications.

Subject Categories:

  • Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE