Articles | Volume 21
01 Dec 2023
 | 01 Dec 2023

Y-shaped tunable monolithic dual colour lasers for THz technology

Carsten Brenner, Nils Surkamp, and Martin Rudolf Hofmann

Related authors

Near Infrared Diode Laser THz Systems
Carsten Brenner, Yinghui Hu, Jared Gwaro, Nils Surkamp, Benjamin Döpke, Martin R. Hofmann, Besher Kani, Andreas Stöhr, Bernd Sumpf, Andreas Klehr, and Jörg Fricke
Adv. Radio Sci., 16, 167–175,,, 2018
Short summary

Cited articles

Brenner, C., Hu, Y., Gwaro, J., Surkamp, N., Döpke, B., Hofmann, M. R., Kani, B., Stöhr, A., Sumpf, B., Klehr, A., and Fricke, J.: Near Infrared Diode Laser THz Systems, Adv. Radio Sci., 16, 167–175,, 2018. 
Carpintero, G., Chitoui, M., van Dijk, F., Renaud, C. C., Wonfor, A., Bente, E. A. J. M., Penty, R. V., White, I. H., Seeds, A. J., Balakier, K., Yang, Z., Guzman, R. C., Corradi, A., Jimenez, A., Kervella, G., Fice, M. J., and Lamponi, M.: Microwave Photonic Integrated Circuits for Millimeter-Wave Wireless Communications, J. Light. Technol., 32, 3495–3501,, 2014. 
Dai, J., Zhang, J., Zhang, W., and Grischkowsky, D.: Terahertz time-domain spectroscopy characterization of the far-infrared absorption and index of refraction of high-resistivity, float-zone silicon, J. Opt. Soc. Am. B, 21, 1379,, 2004. 
Göbel, T., Stanze, D., Troppenz, U., Kreissl, J., Sartorius, B., and Schell, M.: Integrated continuous-wave THz control unit with 1 THz tuning range, in: 2012, 37th International Conference on Infrared, Millimeter, and Terahertz Waves, 2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2012), Wollongong, NSW, Australia, 1–3,, 2012. 
Gwaro, J. O., Brenner, C., Theurer, L. S., Maiwald, M., Sumpf, B., and Hofmann, M. R.: Continuous Wave THz System Based on an Electrically Tunable Monolithic Dual Wavelength Y-Branch DBR Diode Laser, J. Infrared Millim. Terahertz Waves, 41, 568–575,, 2020. 
Short summary
THz systems are promising tools for non-destructive testing and material characterisation. High costs, which are mostly determined by the laser system, prevent the application in the market. By using monolithic dual-colour lasers, a significant cost decrease can be achieved. We discuss some of the typical drawbacks associated with these lasers. Furthermore, we present a complete THz system which is based on a dual-colour diode laser to show the capabilities for material characterisation.