25 February 2016 Hybrid polymer/InP dual DBR laser for 1.5 μm continuous-wave terahertz systems
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Abstract
A hybrid polymer/InP dual DBR laser at 1.5μm is presented as an optical source for heterodyne generation and detection of cw-THz signals. The device consists of an active InP chip as an active gain element, end-fire coupled to a polymer chip with thermo-optically tunable phase shifters and Bragg gratings. Mode-hop-free tuning of 1.1 THz has been achieved on the single DBR lasers. The usability of such sources for heterodyne cw-THz generation has been demonstrated in a coherent cw-THz setup. Scans in the THz range show a resolution of the H2O absorption lines comparable to the results achievable with commercially-available external-cavity diode lasers.
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D. de Felipe, D. de Felipe, M. Happach, M. Happach, S. Nellen, S. Nellen, W. Brinker, W. Brinker, M. Kleinert, M. Kleinert, C. Zawadzki, C. Zawadzki, M. Möhrle, M. Möhrle, N. Keil, N. Keil, T. Göbel, T. Göbel, K. Petermann, K. Petermann, M. Schell, M. Schell, } "Hybrid polymer/InP dual DBR laser for 1.5 μm continuous-wave terahertz systems", Proc. SPIE 9747, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications IX, 974719 (25 February 2016); doi: 10.1117/12.2212989; https://doi.org/10.1117/12.2212989
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