84-GHz source generated from a mode-locked semiconductor-laser-pumped HEMT

Kalin Spariosu; Vladimir A. Manasson; Lev S. Sadovnik; Robert M. Mino; Dipen Bhattacharya; Mohammed Ershad Ali; Harold R. Fetterman

doi:10.1117/12.283936

23 October 1997 84-GHz source generated from a mode-locked semiconductor-laser-pumped HEMT

Kalin Spariosu, Vladimir A. Manasson, Lev S. Sadovnik, Robert M. Mino, Dipen Bhattacharya, Mohammed Ershad Ali, Harold R. Fetterman

Author Affiliations +

Proceedings Volume 3160, Optical Technology for Microwave Applications VIII; (1997) https://doi.org/10.1117/12.283936
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

The generation of 84 GHz radiation was demonstrated using a mode-locked semiconductor laser (MLSL) pumped heterojunction bipolar transistor (HBT). The passively mode-locked MLSL was biased appropriately utilizing two diode laser drivers (current sources). Mode-locked behavior was achieved in a colliding pulse mode, resulting in a pulse repetition rate frequency of approximately equals 84 GHz. The mode-locked behavior was confirmed by utilizing both an interferometer-based correlation measurement and an optical spectrum analyzer. The MLSLO was then used to pump an HBT that was specially designed for optical pumping (a 10 mm X 10 mm window was fabricated in the HBT), allowing efficient optical excitation of the device. HBT-radiated MMW signals as high as 20 dB (above the noise floor) were achieved at approximately equals 84 GHz.

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Kalin Spariosu, Vladimir A. Manasson, Lev S. Sadovnik, Robert M. Mino, Dipen Bhattacharya, Mohammed Ershad Ali, and Harold R. Fetterman "84-GHz source generated from a mode-locked semiconductor-laser-pumped HEMT", Proc. SPIE 3160, Optical Technology for Microwave Applications VIII, (23 October 1997); https://doi.org/10.1117/12.283936

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