Room-temperature terahertz generation using vertical-external-cavity surface-emitting lasers

M. Wichmann, A. Chernikov, M. K. Shakfa, M. Scheller, J. V. Moloney, S. W. Koch, M. Koch

Research output: Contribution to conferencePaper

Abstract

Continuous wave (CW) terahertz (THz) sources are highly desirable for a plethora of applications ranging from spectroscopy [1] over quality inspection [2,3] of industrial goods to THz astronomy [4]. It is, however, still challenging to generate decent power levels from tunable room-temperature sources; in particular in the frequency window between 1 and 5 THz. Here, we present a compact, tunable room-temperature operating CW THz source capable of generating milliwatt power levels. The source is based on intracavity difference frequency generation (DFG) within a dual color vertical-external-cavity surface-emitting laser (VECSEL). For an efficient exploitation of the frequency-mixing scheme, a stable two-color operation of the laser is crucial. We additionally perform a systematic study of the temporal stability of the VECSEL emission via single-shot streak camera measurements. The experimental data is evaluated using quantitative statistical analysis schemes. Stable and unstable operation regimes are identified and the dependence on the intra-cavity power is investigated.

Original languageEnglish (US)
DOIs
StatePublished - Jan 1 2013
Event2013 Conference on Lasers and Electro-Optics Europe and International Quantum Electronics Conference, CLEO/Europe-IQEC 2013 - Munich, Germany
Duration: May 12 2013May 16 2013

Other

Other2013 Conference on Lasers and Electro-Optics Europe and International Quantum Electronics Conference, CLEO/Europe-IQEC 2013
CountryGermany
CityMunich
Period5/12/135/16/13

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Wichmann, M., Chernikov, A., Shakfa, M. K., Scheller, M., Moloney, J. V., Koch, S. W., & Koch, M. (2013). Room-temperature terahertz generation using vertical-external-cavity surface-emitting lasers. Paper presented at 2013 Conference on Lasers and Electro-Optics Europe and International Quantum Electronics Conference, CLEO/Europe-IQEC 2013, Munich, Germany. https://doi.org/10.1109/CLEOE-IQEC.2013.6800793