Terahertz generation by difference frequency conversion of two single-frequency VECSELs in an external resonance cavity

Maik Scheller; Justin R. Paul; Alexandre Laurain; Abram Young; Stephan W. Koch; Jerome V. Moloney

doi:10.1117/12.2040399

3 March 2014 Terahertz generation by difference frequency conversion of two single-frequency VECSELs in an external resonance cavity

Maik Scheller, Justin R. Paul, Alexandre Laurain, Abram Young, Stephan W. Koch, Jerome V. Moloney

Author Affiliations +

Proceedings Volume 8966, Vertical External Cavity Surface Emitting Lasers (VECSELs) IV; 89660E (2014) https://doi.org/10.1117/12.2040399
Event: SPIE LASE, 2014, San Francisco, California, United States

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.

Citation Download Citation

Maik Scheller, Justin R. Paul, Alexandre Laurain, Abram Young, Stephan W. Koch, and 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); https://doi.org/10.1117/12.2040399

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