3 March 2014 Terahertz generation by difference frequency conversion of two single-frequency VECSELs in an external resonance cavity
Author Affiliations +
Abstract
We demonstrate a continuous wave, single frequency terahertz (THz) source based on parametric difference frequency generation within a nonlinear crystal located in an optical enhancement cavity. Two single-frequency VECSELs with emission wavelengths spaced by 6.8 nm are phase locked to the external cavity and are used as pump sources for the nonlinear down conversion. The emitting THz radiation is centered at 1.9 THz and has a linewidth of less than 100 kHz. The output power of the source exceeds 100 μW. We show that the THz source can be used as local oscillator to drive a receiver used in astronomy applications.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Maik Scheller, Maik Scheller, Justin R. Paul, Justin R. Paul, Alexandre Laurain, Alexandre Laurain, Abram Young, Abram Young, Stephan W. Koch, Stephan W. Koch, Jerome V. Moloney, Jerome V. Moloney, } "Terahertz generation by difference frequency conversion of two single-frequency VECSELs in an external resonance cavity", Proc. SPIE 8966, Vertical External Cavity Surface Emitting Lasers (VECSELs) IV, 89660E (3 March 2014); doi: 10.1117/12.2040399; https://doi.org/10.1117/12.2040399
PROCEEDINGS
6 PAGES


SHARE
Back to Top