Terahertz wave generation from a dc-biased multimode laser

Sylwester Latkowski, Frederic Surre, Pascal Landais

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We present results achieved in the generation of terahertz wave by a semiconductor laser. It is a Fabry-Ṕrot based device with shallow grooves implemented on its p -side to engineer the longitudinal mode spectrum. The laser is dc-biased and temperature controlled at 298 K. The main two modes are separated by 3 nm at 1550 nm with a side-mode-suppression ratio of 25 dB. Using a frequency resolved optical gating, evidence of mode beating at 373 GHz is observed. With a bolometer interfaced to a Fourier transform interferometer, the second harmonic signal is measured at 690 GHz.

Original languageEnglish
Article number081109
Number of pages3
JournalApplied Physics Letters
Issue number8
Publication statusPublished - 25 Feb 2008
Externally publishedYes

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