Optical Frequency Combs from High-Order Sideband Generation
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 f(NIR) was transmitted through an epitaxial layer containing GaAs/AlGaAs quantum wells that were driven by quasi-cw in-plane electric fields F-THz between 4 and 50 kV/cm oscillating at frequencies f(THz) between 240 and 640 GHz. Frequency combs with teeth at f(sideband) = f(NIR) n f(THz) (n even) were produced, with maximum reported n > 120, corresponding to a maximum comb span > 80 THz. Comb spectra with the identical product f(THz) 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 30, 2018
- Accession Number
- AD1104080
Entities
People
- Arthur C. Gossard
- Darren C. Valovcin
- Hunter B. Banks
- Kenneth West
- Loren Pfeiffer
- Mark S. Sherwin
- Shawn Mack
Organizations
- United States Naval Research Laboratory