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13 November 1998 Active mode locking of a p-Ge hot-hole laser
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The p-Ge hot hole laser is as yet the only solid state tunable laser with a strong emission in the THz frequency range. Monte Carlo simulations have shown that modelocking of the laser on the intervalence band transition should be possible by gain modulation through the application of an appropriate rf electric field. Recently we did observe for the first time the generation of 200 picosecond pulses in the high frequency (approximately equals 100 cm-1) emission range. Now also pulses as short as 100 ps have been observed in the low frequency regime (approximately equals 50 cm-1). A detailed study of the wavelength dependent optical output of the laser has been started now for (normal) pulsed -- as well as for active mode locked operation. Results on pulse shape and small signal gain in the low frequency (equals low magnetic field) regime are given.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. N. Hovenier, Tjeerd O. Klaassen, W. Th. Wenckebach, Andrei V. Muravjov, Sergei G. Pavlov, and Valery N. Shastin "Active mode locking of a p-Ge hot-hole laser", Proc. SPIE 3465, Millimeter and Submillimeter Waves IV, (13 November 1998);

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